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英语必修 第二册Unit 2 Wildlife protection单元测试复习练习题
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这是一份英语必修 第二册Unit 2 Wildlife protection单元测试复习练习题，共14页。试卷主要包含了阅读理解，七选五，完形填空，语法填空，读后续写，书面表达等内容，欢迎下载使用。
Unit 2 Wildlife Protection B卷
一、阅读理解
1. I suddenly heard an elephant crying as though frightened. Looking down, I immediately recognized that something was wrong, and ran down to the edge of the near bank. There I saw Ma Shwe with her three-month-old calf struggling in the fast-rising water, and it was a life-and-death struggle. Her calf was floating and screaming with fear. Ma Shwe was as near to the far bank as she could get, holding her whole body against the rushing water, and keeping the calf pressed against her huge body. Every now and then the rushing water would sweep the calf away. There was a sudden rise in the water and the calf was washed clean over the mother's body and was gone. Ma Shwe turned quickly to reach it and pressed the calf with her head and trunk(象鼻) against the rocky bank. Then with a huge effort, she picked it up in her trunk and tried until she was able to place it on a narrow shelf of rock.
Just at this moment, she went back into the river. If she were carried down, it would be certain death. I knew, as well as she did, that there was one spot(地点) where she could get to the bank, but it was on the other side from where she had put her calf. While I was wondering what I could do next, I heard the sound of a mother's love. Ma Shwe had crossed the river and got to the bank and was making her way back as fast as she could, roaring(吼叫) all the time, but to her calf it was music.
(1). The moment the author got down to the river bank he saw _______.
A. the calf was about to fall into the river
B. Ma Shwe was placing the calf on the rock
C. the calf was washed away by the rising water
D. Ma Shwe was holding the calf against the rushing water
(2). How did Ma Shwe manage to save her calf from the fast-flowing water?
A. By putting it on a safe spot. B. By pressing it against her body.
C. By taking it away with her. D. By carrying it on her back.
(3). How did the calf feel about the mother elephant's roaring?
A. It was a musical note. B. It was a sign of danger.
C. It was a call for help. D. It was a great comfort.
2. After years of heated debate, gray wolves were reintroduced to Yellowstone National Park. Fourteen wolves were caught in Canada and transported to the park. By last year, the Yellowstone wolf population had grown to more than 170 wolves.
Gray wolves once were seen here and there in the Yellowstone area and much of the continental United States, but they were gradually displaced by human development. By the 1920s, wolves had practically disappeared from the Yellowstone area. They went farther north into the deep forests of Canada, where there were fewer humans around.
The disappearance of the wolves had many unexpected results. Deer and elk populations—major food sources (来源) for the wolf—grew rapidly. These animals consumed large amounts of vegetation (植被), which reduced plant diversity in the park. In the absence of wolves, coyote populations also grew quickly. The coyotes killed a large percentage of the park's red foxes, and completely drove away the park's beavers.
As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone Park. They hoped that wolves would be able to control the elk and coyote problems. Many farmers opposed the plan because they feared that wolves would kill their farm animals or pets.
The government spent nearly 30 years coming up with a plan to reintroduce the wolvers. The U.S. Fish and Wildlife Service carefully monitors and manages the wolf packs in Yellowstone. Today, the debate continues over how well the gray wolf is fitting in at Yellowstone. Elk, deer, and coyote populations are down, while beavers and red foxes have made a comeback. The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well.
1.What is the text mainly about?
A.Wildlife research in the United States.
B.Plant diversity in the Yellowstone area.
C.The conflict between farmers and gray wolves.
D.The reintroduction of wolves to Yellowstone Park.
2.What does the underlined word "displaced" in paragraph 2 mean?
A.Tested. B.Separated. C.Forced out. D.Tracked down.
3.What did the disappearance of gray wolves bring about?
A.Damage to local ecology. B.A decline in the park's income.
C.Preservation of vegetation. D.An increase in the variety of animals.
4.What is the author's attitude towards the Yellowstone wolf project?
A.Doubtful. B.Positive. C.Disapproving. D.Uncaring.
3. One animal which is still alive, but has almost disappeared from the world, is the Chinese river dolphin or baiji.
The baiji is a beautiful animal with agraceful body and a long nose. It is blue-grey with a white underside, weighs between 100 and 160 kilogrammes, and can grow up to eight feet long. It lives in the middle and lower parts of the Yangtze River. Most dolphins live in the sea so the baiji is very unusual. It is one of only five kinds of river dolphins in the world.
In the past, the Yangtze River was home to many thousands of baiji. A book written during the Han Dynasty,22 centuries ago, tells of the river being full of the beautiful creatures. At that time, there were many stories about the baiji. One story said that the dolphin was really a beautiful princess who had drowned in the river. Another said it was a kind of horse that could gallop (急速行进) across water, carrying God on its back.
Sadly, the situation today is very different. Many millions of people live in the Yangtze River Basin and the river is busy, noisy and polluted. The baiji is almost blind and moves around using sounds. With so many boats and people using the river, the animals cannot find their way around. They are unable to find food, or find each other. Year by year, the number of baiji in the river becomes smaller and smaller.
A lot of work is being done to help the baiji. One section of the river has been made into a kind of nature park, where the baiji can be safe. Fishermen work together with scientists and tell them when they see a baiji, or if they find an injured one. Injured animals are taken to a research center and nursed back to be healthy. However, in spite of these measures, scientists estimate(估计) that the mumber of the baiji still alive in the river may be less than 100. If things continue as they are, the lovely creature will disappear in the next 25 years.
1.Which description about the baiji is WRONG?
A.It has already died out from the world.
B.It is blue-grey with a white underside.
C.It lives in the middle and lower parts of the Yangtze River.
D.It is one of only 5 kinds of river dolphins in the world.
2.The reasons why the baiji is disappearing are the following EXCEPT _____.
A.many millions of people live in the Yangtze River Basin, making there noisy and polluted
B.the baiji is blind because of the pollution and can't find the way around
C.the boats and people are noisy, making the animals cannot find their way around by sounds
D.they are unable to find food or find each other by sounds since the river is noisy
3.Which of the following is the correct way to save the baiji?
A.Catch the baiji and take them to the research center.
B.Make the whole Yangtze River a nature park for the baiji to live in.
C.Make one section of the river a nature park where the baiji can be safe.
D.Ask many people to come to the river to help the baiji
4.What can we learn from the passage?
A.People can take some measures to save the animals dying out.
B.The animals dying out are being hunted by human beings.
C.People like to live in the Yangtze River Basin with animals swimming in the river.
D.There are more baiji living in a nature park now.
4. How does an ecosystem(生态系统) work? What makes the populations of different species the way they are? Why are there so many flies and so few wolves? To find an answer, scientists have built mathematical models of food webs, noting who eats whom and how much each one eats.
With such models, scientists have found out some key principles operating in food webs. Most food webs, for instance, consist of many weak links rather than a few strong ones. When a predator(掠食动物) always eats huge numbers of a single prey(猎物), the two species are strongly linked; when a predator lives on various species, they are weakly linked. Food webs may be dominated by many weak links because that arrangement is more stable over the long term. If a predator can eat several species, it can survive the extinction of one of them. And if a predator can move on to another species that is easier to find when a prey species becomes rare, the switch allows the original prey to recover. The weak links may thus keep species from driving one another to extinction.
Mathematical models have also revealed that food webs may be unstable, where small changes of top predators can lead to big effects throughout entire ecosystems. In the 1960s, scientists proposed that predators at the top of a food web had a surprising amount of control over the size of populations of other species—including species they did not directly attack.
And unplanned human activities have proved the idea of top-down control by top predators to be true. In the ocean, we fished for top predators such as cod on an industrial scale, while on land, we killed off large predators such as wolves. These actions have greatly affected the ecological balance.
Scientists have built an early-warning system based on mathematical models. Ideally, the system would tell us when to adapt human activities that are pushing an ecosystem toward a breakdown or would even allow us to pull an ecosystem back from the borderline. Prevention is key, scientists say because once ecosystems pass their tipping point(临界点), it is remarkably difficult for them to return.
1. What have scientists discovered with the help of mathematical models of food webs?
A. The living habits of species in food webs.
B. The rules governing food webs of the ecosystems.
C. The approaches to studying the species in the ecosystems.
D. The differences between weak and strong links in food webs.
2. A strong link is found between two species when a predator ________.
A. has a wide food choice
B. can easily find new prey
C. sticks to one prey species
D. can quickly move to another place
3. What will happen if the populations of top predators in a food web greatly decline?
A. The prey species they directly attack will die out.
B. The species they indirectly attack will turn into top predators.
C. The living environment of other species will remain unchanged.
D. The populations of other species will experience unexpected changes.
4. How does an early-warning system help us maintain the ecological balance?
A. By getting illegal practices under control.
B. By stopping us from killing large predators.
C. By bringing the broken-down ecosystems back to normal.
D. By signaling the urgent need for taking preventive action.
二、七选五
5. Sharks are among the oldest animals on Earth. There are hundreds of kinds of sharks. Most are about two metres long. The dogfish shark, however, is less than twenty centimetres in length. A shark has an extremely good sense of smell. It can find small amounts of substances in water, such as blood, body liquids and chemicals produced by animals. ①_______ Sharks eat fish, other sharks, and plants that live in the ocean.
Sharks grow slowly. About forty percent of all sharks lay eggs. ②_______ Some sharks carry their young inside their bodies as humans do. Some sharks are not able to reproduce until they are twenty years old. Most reproduce only every two years. And they give birth to fewer than ten young sharks. For this reason, overfishing of sharks is of special danger to the future of the animal.
Sharks are important for the world's oceans. They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too great. ③_______
People hunt sharks for sport, food, medicine and their skin. Experts say the international market for some kinds of sharks has increased because many parts of a shark are valuable.
Collectors pay thousands of dollars for the jaws of a shark. ④_______ The skin of a shark can be used like leather.
In Asia, people enjoy a kind of soup made from shark fins. Experts say a fisherman can earn a lot of money for even one kilogram of shark fins. Sharks are among the oldest animals on Earth, but some sharks are in danger of disappearing from Earth. ⑤_______
A.Shark liver oil is a popular source of Vitamin A.
B.This protects the plants and other forms of life that exist in the oceans.
C.Sharks are valuable to us and we can make full use of them.
D.These powerful senses help sharks find their food.
E.If too many sharks in one area are killed, that group of sharks may never return to normal population levels.
F.They are a threat to other forms of life in the ocean.
G.The others give birth to the young.
三、完形填空（15空）
6. Wildlife has been greatly threatened in the modern age. There are species(物种) that are 1 every day. The white-naped crane is a typical example. So scientists are trying their best to 2 the species from going out of existence.
Chris and Tim work at a zoo, helping endangered cranes with their reproduction(繁殖). Emma, a female crane, has been in their 3 since she arrived in 2004.
Born at an international crane foundation, Emma was 4 by human caretakers. This led to an unexpected 5 , though she had a wonderful time there. Emma had 6 taken herself as a crane and become deeply attached to humans. She 7 to live with male cranes, and even had a 8 for killing some of them, which made it 9 for her to become a mother.
10 , the two zookeepers didn't want to see the extinction(灭绝) of this precious species. With their patience and efforts, they successfully developed a 11 of artificial breeding(人工繁殖) and natural reproduction. This 12 Emma to give birth to five baby cranes.
The two keepers are proud of their productive work. But before they can be 13 , more efforts must be made, because the population of the crane in the wild is on the 14 , and many other species appear headed toward extinction. 15 , not everyone has realized that wildlife has thoughts, feelings, and most importantly, equal rights to survive.
1.A.surviving B.migrating C.competing D.disappearing
2.A.kill B.save C.determine D.remove
3.A.care B.eye C.mind D.mystery
4.A.found B.chosen C.raised D.seized
5.A.effect B.consequence C.victory D.solution
6.A.never B.always C.occasionally D.ever
7.A.destroyed B.refused C.measured D.recovered
8.A.gift B.skill C.trend D.reputati
9.A.amazing B.unbelievable C.important D.impossible
10.A.Therefore B.Moreover C.However D.Instead
11.A.combination B.collection C.solution D.accommodation
12.A.forced B.forbade C.sought D.enabled
13.A.defeated B.grateful C.assured D.tolerant
14.A.list B.rise C.agenda D.decline
15.A.In contrast B.After all C.By the way D.On the contrary
四、语法填空
7.阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
The 15 wild Asian elephants left their habitat in Xishuangbanna National Nature Reserve in Southwest China's Yunnan province and ①_________(move) to the north. 41 days later, the herd traveled to Hongta district, Yuxi city neighboring with the south of Kunming. The ②_________ (locate) was only 20 km away from Kunming's Jingning district and less than 100 km away from the capital's downtown area. The herd, ③_________ (original)consisting of 17 elephants in total at their departure time, ④_________ (report)to leave Xishuangbanna last year. ⑤_________ May 24th, a young elephant found alcoholic food at a villager's home and got drunk. Luckily, the baby elephant, ⑥_________ overslept, rejoined the unit the next day. The 15 elephants continued their journey. The Asian elephant, ⑦_________ (include) on the International Union for Conservation of Nature Red List of Threatened Species as endangered, enjoys Class-A protection in China, the same level as that of the giant panda. Yunnan ⑧_________ (be) the only habitat of wild Asian elephants in China. Before the 1970s, the species was threatened due to many reasons, such as an increase in the human population, reduced forestry areas ⑨_________ illegal(非法的)hunting. The number of elephants dropped significantly. However, due to determined protection efforts in recent ⑩_________ (decade), the Asian elephant population in China has risen from 170 in the 1970s to 300.
五、读后续写
8.阅读下面材料,根据其内容和所给段落开头语续写两段,使之构成一篇完整的短文。
I took a job as a receptionist for a veterinarian(兽医) almost five decades ago. As an enthusiastic animal lover, I accepted the position on condition that I wouldn't have to assist with any wounded animals. I couldn't bear to see any creature in pain. At the end of my first week, we were closing the office for the day when a young man ran up to us holding a severely injured Doberman puppy in his arms and begging us to save his life. The four-month-old pup had been hit by a car.
The doctor and I ran back into the operating room. The only place the skin was still attached to this poor little animal's body was around one shoulder. The vet worked tirelessly for what seemed like hours, stitching(缝合) him back together again. That was the easy part. The puppy had broken multiple bones, including his spine (脊柱). Even if he survived the next few days, we were quite sure he would never walk again.
That day forever changed my life. The veterinarian guided me, and I became his assistant in all things. One of my first jobs was to give that Doberman puppy daily physical care. I remembered moving his tiny legs to try to keep his muscles from withering (萎缩). Weeks went by until one day, I felt this little fighter push back ever so slightly. And he continued to push back till he could finally use his legs. He recovered.
A year later, I walked into the clinic's waiting room and saw a huge Doberman who had been standing quietly with his owner on the opposite side of the room. I called the name of the next client.
注意:续写词数应为150左右。
Suddenly, the huge Doberman broke loose and rushed toward me. ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
I went on to be a vet technician for 14 years, and since retirement, I've volunteered at a no-kill animal shelter. ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
六、书面表达
9. 假如你叫李华,你所生活的城市周围有很多动植物正逐渐减少,请你对此现象向有关部门写一封信,分析造成这种现象的原因,并根据实际情况提出几条切实可行的建议。以下几条要点需包括在内:
1. 野生动植物的现状;
2. 分析造成许多野生动植物濒临灭绝的原因;
3. 提出几条保护野生动植物的具体措施。
注意:
1.不可遗漏要点,可适当增加细节,以使行文连贯;
2.词数80左右,开头和结尾已给出,不计入总词数。
Dear Sir or Madam,
I'm writing to give some suggestions to protect the wildlife living in and around our city.
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
I hope my suggestions are of much help.
Yours sincerely,
Li Hua
参考答案
1.答案：(1)-(3) DAD
解析：(1).细节理解题。根据文章第一段的"There I saw Ma Shwe with her three-month-old calf struggling in the fast-rising water, and it was a life-and-death struggle... holding her whole body against the rushing water..."可知，Ma Shwe尽可能地贴近河岸,抓住小象来对抗洪水。故选D项。
(2).细节理解题。根据文章第一段中对Ma Shwe营救小象的细节的描写可知，Ma Shwe是在寻找一个安全的地方。文章第二段第三句话"I knew, as well as she did, that there was one spot(地点) where she could get to the bank, but it was on the other side from where she had put her calf."再次说明她是通过把小象放到一个安全的地方来营救小象的。故选A项。
(3).推理判断题。根据文章对小象的描写可知，小象一直处于紧张、害怕的状态，直到象妈妈成功地救了自己并来到自己身边时，小象的害怕和紧张情绪才得以平复，所以象妈妈的吼叫也像是音乐一般成为对小象的一种抚慰。故选D项。
2.答案：1.D; 2.C; 3.A; 4.B
解析：1.主旨大意题。根据第一段第一句"... gray wolves were reintroduced to Yellowstone National Park. " 和最后一段第一句"The government spent nearly 30 years coming up with a plan to reintroduce the wolves. "可知,文章主要介绍了黄石国家公园的灰狼消失后产生的影响以及当地政府重新引入灰狼的计划。故选D项。
2.词义猜测题。根据第二段可知,在黄石国家公园,灰狼曾经随处可见,但是到了20世纪20年代,由于人类活动频繁,灰狼基本消失,它们迁徙到了加拿大的森林深处,那里很少有人类活动。因此可推测灰狼因为人类的发展被迫离开。force out意为"赶出去",与displace意思相近,故选C项。
3.细节理解题。根据第三段可知,灰狼的消失带来了很多意料之外的后果,鹿和麋鹿的数量激增,它们消耗了大量的植被,破坏了公园里植物的多样性同时丛林狼的数量也迅速增长, 造成赤狐数量的减少和河狸的消失。因此灰狼的消失破坏了当地的生态,故选A项。
4.推理判断题。由文章最后一段最后一句话中的a valuable experiment可推知,作者对黄石国家公园的灰狼回归计划持赞同的态度,故选B项。doubtful意为"怀疑的";positive意为 "赞同的";disapproving意为"不赞成的";uncaring意为"漠不关心的"。
3.答案：1.A; 2.B; 3.C; 4.A
解析： 1.细节理解题。由第一段中的...still alive, but has almost disappeared 可知,应选 A。
2.B 推理判断题。第四段讲述了baiji减少的原因:它们是一种靠声音辨别方向的动物,随着住在长江沿岸的人的增多,长江变得喧闹,它们就找不到方向,找不到食物和同伴了,所以数量逐渐减少。
3.C 推理判断题。baiji数量减少最重要的原因就是它们要依靠声音辨别方向,而人类活动把它们所需要的宁静破坏了,最好的办法自然就是还给它们原有的宁静环境——建一片自然公园,当然不可能将整个长江建成自然公园,所以是一部分, C对B错;只需把受伤的baiji带回研究中心治疗,不是把每条都抓回去,最适合它们的家还是长江,故A错;让许多人到长江只会加剧baiji灭亡而不是帮助它们,故D错。
4.A 推理判断题。根据全文内容推知人们可以采取措施来保护瀕临灭绝的动物。
4.答案：1-4 BCDD
解析：1.细节理解题。根据第二段第一句"With such models, scientists have found out some key principles operating in food webs."可知，应选B项。
2.推理判断题。根据第二段第句"When a predator(掠食动物) always eats huge numbers of a single prey(猎物), the two species are strongly linked..."可知，当一种掠食动物总是吃掉数量庞大的单一种类的猎物时，这两种动物有较强关联；结合下文可知，有较弱关联的两个物种，掠食动 物有广泛的食物选择、容易找到新的猎物，故排除A、B项。 D项在文中没有提及，也排除。故选C项。
3.细节理解题。根据第三段第二句"In the 1960s, scientists proposed that predators at the top of a food web had a surprising amount of control over the size of populations of other species—including species they did not directly attack."可知，若一个食物链顶层的掠食动物大规模减少， 其他物种的数量将会经历意想不到的改变。故选D项。
4.细节理解题。根据最后一段第二句"Ideally, the system would tell us when to adapt human activities that are pushing an ecosystem toward a breakdown or would even allow us to pull an ecosystem bade from the borderline."可知，预警系统是通过发出需要采取预防行动的信号来帮助我们维护生态平衡。故本题选D项。
5.答案：1-5 DGBAE
解析：1.根据前面一句"It can find small amounts of substances in water, such as blood, body liquids and chemicals produced by animals."可知鯊鱼灵敏的嗅觉可以使它们找到水里的血、体液以及动物产生的化学物质。这样的能力让它们迅速找到食物。故D项正确。
2.本句叙述鲨鱼的繁衍方式。根据前面一句"About forty percent of all sharks lay eggs."可知百分之四十的鲨鱼产卵。G项指其余的鲨鱼直接生出小鲨鱼。故G项正确。
3.根据前面一句"Their hunting activities mean that the numbers of other fish in ocean waters do not become too great."可知鲨鱼可以保持海洋的生态平衡，不让某些生物的数量太大。这间接地保护了海洋里的其他生物。故B项正确。
4.根据前一句"Collectors pay thousands of dollars for the jaws of a shark."和后一句"The skin of a shark can be used like leather."可知本段是在叙述鲨鱼各部位的价值，只有A项与这两句属于同类。故A项正确。
5.根据前面一句"Sharks are among the oldest animals on Earth, but some sharks are in danger of disappearing from Earth."可知某些鲨鱼已经面临着灭绝的危险。一旦某一区域内大量的鲨鱼被捕杀，该区域的鲨鱼就很难恢复到正常的数狱。故E项正确。
6.答案：1-5 DBACB 6-10 ABDDC 11-15 ADCDB
解析：1.句意: 每天都有物种在消失。根据上句中的threatened及下文列举的濒危野生动物白枕鹤可知, 此处表示正在消失(disappearing), 故选D。survive幸存; migrate迁徙; compete竞争。
2.句意: 所以科学家们在尽最大努力拯救瀕危物种。由下文提到的Chris和Tim拯救白枕鹤可知, 此处表示拯救。save...from...拯救......免于, 故选B。kill杀死; determine确定; remove去除。
3.句意: Emma, 一只雌性白枕鹤, 自2004年来到这家动物园以后, 就一直由他们照看。由下文叙述可知, Chris和Tim一直在照顾Emma。in one's care由......来照看, 故选A。eye眼睛; mind思维; mystery神秘的事物, 奥秘。
4.由下文的become deeply attached to humans可知, Emma是由人类养大(raised)的。故选C。find找到; choose选择; seize抓住。
5.这导致了出乎意料的结果。此处指后文描述的它无法正常繁殖后代这个后果(consequence), 故选B。effect影响; victory胜利; solution解决方法。
6.Emma从来没把自己看作是只鹤。由下文提到become deeply attached to humans可知, Emma从来没把自己看成是白枕鹤, 故选A。always总是, 一直; occasionally偶尔; ever曾经。
7.结合语境可知, Emma不把自己看作是只鹤, 自然会拒绝(refused)和雄鹤一起生活, 故选B。destroy毁灭; measure测量; recover恢复。
8.它甚至会因为杀死一些雄鹤而出名(have a reputation), 故选D。gift天赋; skill技能; trend趋势。
9.这使得它不可能成为母亲。Emma拒绝与雄鹤一起生活, 自然不可能繁殖, 故选D。amazing令人惊讶的; unbelievable难以置信的; important重要的。
10.句意: 然而, 两位动物饲养员不想看到这一珍稀物种灭绝。"它不可能成为母亲"与"这两位动物饲养员不想看到这一珍稀物种灭绝"是转折关系, 故选C。therefore因此; moreover而且; instead代替, 而不是。
11.他们成功地将人工繁殖和自然繁殖两种繁殖方式结合了起来。combination结合, 故选A。collection收集; solution解决办法; accommodation调节, 适应。
12.句意: 这种方式使Emma生了五只幼鹤。enable sb. to do sth.使某人做某事, 是固定搭配, 故选D。force迫使, 强迫; forbid禁止; seek寻找。
13.但在他们有把握(assured)之前, 必须做出更多的努力。defeated被击败的; grateful感激的; tolerant容忍的。
14.野生白枕鹤的数量在下降。on the decline在下降, 在衰退。故选D。list清单; rise上升; agenda议程。
15.句意: 毕竟(After all), 不是每个人都意识到了野生动物有思想, 有感情。最重要的是, 它们有平等的生存权利。联系上下文可知, 应选B。in contrast相比之下; by the way顺便提一下; on the contrary恰恰相反。
7.答案：1. moved2. location3. originally4. was reported5. On6. which7. included8. is9. and10. decades
解析：
1. moved【解析】考查时态。本句描述的是过去的事,move和前面的left一样,是由and连接的两个并列的谓语动词。
2. location【解析】考查词性转换。根据前面的定冠词可知,此处应该使用名词。
3. originally【解析】考查副词。修饰动词,所以要用副词。
4. was reported【解析】考查时态和语态。根据句中的时间状语可知,本句是描述过去的事;分析句子结构可知本句缺少谓语动词,且report和主语为动宾关系,所以此处要用一般过去时的被动语态。
5. On【解析】考查介词。on表示具体的某一天。
6. which【解析】考查定语从句。分析句子结构可知,本句是非限制性定语从句,先行词是elephant,指物。
7. included【解析】考查非谓语动词。分析句子结构可知,此处作定语修饰 elephant,且与elephant是动宾关系,所以要用过去分词。
8.is【解析】考查主谓一致。根据上下文可知,本句描述的是客观事实,所以要用一般现在时;又因主语是单数,所以此处要填is。
9.and【解析】考查连词。根据句意可知,此处上下文为顺接关系。
10. decades【解析】考查名词单复数。根据后面的时间状语—1970s可知,此处指的是近几十年,所以要用该名词的复数形式。
8.答案：
Suddenly, the huge Doberman broke loose and rushed toward me. I found myself pinned against the wall in amazement. To my surprise, the dog stood on his legs, his front paws on my shoulders, washing my face with joyful and abundant kisses! His owner came to me and told me that he was the dog we had saved one year ago. More than excited to see him again in such good health, I hugged him tightly, determined to become a good vet technician at that moment.
I went on to be a vet technician for 14 years, and since retirement, I've volunteered at a no-kill animal shelter. Being a vet technician and a volunteer at the no-kill animal shelter. I succeeded in saving more animals, which often made me think of the grateful huge Doberman. Although many years have passed, I still shed tears in amazement at the display of love and gratitude the dog had for me. All the dogs knew they had been rescued by me and they were grateful to me.
9.答案：
Dear Sir or Madam,
I'm writing to give some suggestions to protect the wildlife living in and around our city. As we know, many species of wildlife are in danger of extinction. This is because the environment that they are living in has been destroyed greatly.
With the development of cities, water and air are seriously polluted. Their living areas are becoming smaller and smaller. They not only have little to cat, but also can be killed by human beings. These species of wildlife are important part of our life. Personally, more measures should be taken to protect them from being hurt. Firstly, more laws must be made to stop people from cutting down trees. Secondly, all the factories must clean the waste water before it is poured into rivers or lakes. Thirdly, more reserves should be set up so that they can live safely.
I hope my suggestions are of much help.
Yours sincerely,
Li Hua
Unit 2 Wildlife Protection B卷
一、阅读理解
1. I suddenly heard an elephant crying as though frightened. Looking down, I immediately recognized that something was wrong, and ran down to the edge of the near bank. There I saw Ma Shwe with her three-month-old calf struggling in the fast-rising water, and it was a life-and-death struggle. Her calf was floating and screaming with fear. Ma Shwe was as near to the far bank as she could get, holding her whole body against the rushing water, and keeping the calf pressed against her huge body. Every now and then the rushing water would sweep the calf away. There was a sudden rise in the water and the calf was washed clean over the mother's body and was gone. Ma Shwe turned quickly to reach it and pressed the calf with her head and trunk(象鼻) against the rocky bank. Then with a huge effort, she picked it up in her trunk and tried until she was able to place it on a narrow shelf of rock.
Just at this moment, she went back into the river. If she were carried down, it would be certain death. I knew, as well as she did, that there was one spot(地点) where she could get to the bank, but it was on the other side from where she had put her calf. While I was wondering what I could do next, I heard the sound of a mother's love. Ma Shwe had crossed the river and got to the bank and was making her way back as fast as she could, roaring(吼叫) all the time, but to her calf it was music.
(1). The moment the author got down to the river bank he saw _______.
A. the calf was about to fall into the river
B. Ma Shwe was placing the calf on the rock
C. the calf was washed away by the rising water
D. Ma Shwe was holding the calf against the rushing water
(2). How did Ma Shwe manage to save her calf from the fast-flowing water?
A. By putting it on a safe spot. B. By pressing it against her body.
C. By taking it away with her. D. By carrying it on her back.
(3). How did the calf feel about the mother elephant's roaring?
A. It was a musical note. B. It was a sign of danger.
C. It was a call for help. D. It was a great comfort.
2. After years of heated debate, gray wolves were reintroduced to Yellowstone National Park. Fourteen wolves were caught in Canada and transported to the park. By last year, the Yellowstone wolf population had grown to more than 170 wolves.
Gray wolves once were seen here and there in the Yellowstone area and much of the continental United States, but they were gradually displaced by human development. By the 1920s, wolves had practically disappeared from the Yellowstone area. They went farther north into the deep forests of Canada, where there were fewer humans around.
The disappearance of the wolves had many unexpected results. Deer and elk populations—major food sources (来源) for the wolf—grew rapidly. These animals consumed large amounts of vegetation (植被), which reduced plant diversity in the park. In the absence of wolves, coyote populations also grew quickly. The coyotes killed a large percentage of the park's red foxes, and completely drove away the park's beavers.
As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone Park. They hoped that wolves would be able to control the elk and coyote problems. Many farmers opposed the plan because they feared that wolves would kill their farm animals or pets.
The government spent nearly 30 years coming up with a plan to reintroduce the wolvers. The U.S. Fish and Wildlife Service carefully monitors and manages the wolf packs in Yellowstone. Today, the debate continues over how well the gray wolf is fitting in at Yellowstone. Elk, deer, and coyote populations are down, while beavers and red foxes have made a comeback. The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well.
1.What is the text mainly about?
A.Wildlife research in the United States.
B.Plant diversity in the Yellowstone area.
C.The conflict between farmers and gray wolves.
D.The reintroduction of wolves to Yellowstone Park.
2.What does the underlined word "displaced" in paragraph 2 mean?
A.Tested. B.Separated. C.Forced out. D.Tracked down.
3.What did the disappearance of gray wolves bring about?
A.Damage to local ecology. B.A decline in the park's income.
C.Preservation of vegetation. D.An increase in the variety of animals.
4.What is the author's attitude towards the Yellowstone wolf project?
A.Doubtful. B.Positive. C.Disapproving. D.Uncaring.
3. One animal which is still alive, but has almost disappeared from the world, is the Chinese river dolphin or baiji.
The baiji is a beautiful animal with agraceful body and a long nose. It is blue-grey with a white underside, weighs between 100 and 160 kilogrammes, and can grow up to eight feet long. It lives in the middle and lower parts of the Yangtze River. Most dolphins live in the sea so the baiji is very unusual. It is one of only five kinds of river dolphins in the world.
In the past, the Yangtze River was home to many thousands of baiji. A book written during the Han Dynasty,22 centuries ago, tells of the river being full of the beautiful creatures. At that time, there were many stories about the baiji. One story said that the dolphin was really a beautiful princess who had drowned in the river. Another said it was a kind of horse that could gallop (急速行进) across water, carrying God on its back.
Sadly, the situation today is very different. Many millions of people live in the Yangtze River Basin and the river is busy, noisy and polluted. The baiji is almost blind and moves around using sounds. With so many boats and people using the river, the animals cannot find their way around. They are unable to find food, or find each other. Year by year, the number of baiji in the river becomes smaller and smaller.
A lot of work is being done to help the baiji. One section of the river has been made into a kind of nature park, where the baiji can be safe. Fishermen work together with scientists and tell them when they see a baiji, or if they find an injured one. Injured animals are taken to a research center and nursed back to be healthy. However, in spite of these measures, scientists estimate(估计) that the mumber of the baiji still alive in the river may be less than 100. If things continue as they are, the lovely creature will disappear in the next 25 years.
1.Which description about the baiji is WRONG?
A.It has already died out from the world.
B.It is blue-grey with a white underside.
C.It lives in the middle and lower parts of the Yangtze River.
D.It is one of only 5 kinds of river dolphins in the world.
2.The reasons why the baiji is disappearing are the following EXCEPT _____.
A.many millions of people live in the Yangtze River Basin, making there noisy and polluted
B.the baiji is blind because of the pollution and can't find the way around
C.the boats and people are noisy, making the animals cannot find their way around by sounds
D.they are unable to find food or find each other by sounds since the river is noisy
3.Which of the following is the correct way to save the baiji?
A.Catch the baiji and take them to the research center.
B.Make the whole Yangtze River a nature park for the baiji to live in.
C.Make one section of the river a nature park where the baiji can be safe.
D.Ask many people to come to the river to help the baiji
4.What can we learn from the passage?
A.People can take some measures to save the animals dying out.
B.The animals dying out are being hunted by human beings.
C.People like to live in the Yangtze River Basin with animals swimming in the river.
D.There are more baiji living in a nature park now.
4. How does an ecosystem(生态系统) work? What makes the populations of different species the way they are? Why are there so many flies and so few wolves? To find an answer, scientists have built mathematical models of food webs, noting who eats whom and how much each one eats.
With such models, scientists have found out some key principles operating in food webs. Most food webs, for instance, consist of many weak links rather than a few strong ones. When a predator(掠食动物) always eats huge numbers of a single prey(猎物), the two species are strongly linked; when a predator lives on various species, they are weakly linked. Food webs may be dominated by many weak links because that arrangement is more stable over the long term. If a predator can eat several species, it can survive the extinction of one of them. And if a predator can move on to another species that is easier to find when a prey species becomes rare, the switch allows the original prey to recover. The weak links may thus keep species from driving one another to extinction.
Mathematical models have also revealed that food webs may be unstable, where small changes of top predators can lead to big effects throughout entire ecosystems. In the 1960s, scientists proposed that predators at the top of a food web had a surprising amount of control over the size of populations of other species—including species they did not directly attack.
And unplanned human activities have proved the idea of top-down control by top predators to be true. In the ocean, we fished for top predators such as cod on an industrial scale, while on land, we killed off large predators such as wolves. These actions have greatly affected the ecological balance.
Scientists have built an early-warning system based on mathematical models. Ideally, the system would tell us when to adapt human activities that are pushing an ecosystem toward a breakdown or would even allow us to pull an ecosystem back from the borderline. Prevention is key, scientists say because once ecosystems pass their tipping point(临界点), it is remarkably difficult for them to return.
1. What have scientists discovered with the help of mathematical models of food webs?
A. The living habits of species in food webs.
B. The rules governing food webs of the ecosystems.
C. The approaches to studying the species in the ecosystems.
D. The differences between weak and strong links in food webs.
2. A strong link is found between two species when a predator ________.
A. has a wide food choice
B. can easily find new prey
C. sticks to one prey species
D. can quickly move to another place
3. What will happen if the populations of top predators in a food web greatly decline?
A. The prey species they directly attack will die out.
B. The species they indirectly attack will turn into top predators.
C. The living environment of other species will remain unchanged.
D. The populations of other species will experience unexpected changes.
4. How does an early-warning system help us maintain the ecological balance?
A. By getting illegal practices under control.
B. By stopping us from killing large predators.
C. By bringing the broken-down ecosystems back to normal.
D. By signaling the urgent need for taking preventive action.
二、七选五
5. Sharks are among the oldest animals on Earth. There are hundreds of kinds of sharks. Most are about two metres long. The dogfish shark, however, is less than twenty centimetres in length. A shark has an extremely good sense of smell. It can find small amounts of substances in water, such as blood, body liquids and chemicals produced by animals. ①_______ Sharks eat fish, other sharks, and plants that live in the ocean.
Sharks grow slowly. About forty percent of all sharks lay eggs. ②_______ Some sharks carry their young inside their bodies as humans do. Some sharks are not able to reproduce until they are twenty years old. Most reproduce only every two years. And they give birth to fewer than ten young sharks. For this reason, overfishing of sharks is of special danger to the future of the animal.
Sharks are important for the world's oceans. They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too great. ③_______
People hunt sharks for sport, food, medicine and their skin. Experts say the international market for some kinds of sharks has increased because many parts of a shark are valuable.
Collectors pay thousands of dollars for the jaws of a shark. ④_______ The skin of a shark can be used like leather.
In Asia, people enjoy a kind of soup made from shark fins. Experts say a fisherman can earn a lot of money for even one kilogram of shark fins. Sharks are among the oldest animals on Earth, but some sharks are in danger of disappearing from Earth. ⑤_______
A.Shark liver oil is a popular source of Vitamin A.
B.This protects the plants and other forms of life that exist in the oceans.
C.Sharks are valuable to us and we can make full use of them.
D.These powerful senses help sharks find their food.
E.If too many sharks in one area are killed, that group of sharks may never return to normal population levels.
F.They are a threat to other forms of life in the ocean.
G.The others give birth to the young.
三、完形填空（15空）
6. Wildlife has been greatly threatened in the modern age. There are species(物种) that are 1 every day. The white-naped crane is a typical example. So scientists are trying their best to 2 the species from going out of existence.
Chris and Tim work at a zoo, helping endangered cranes with their reproduction(繁殖). Emma, a female crane, has been in their 3 since she arrived in 2004.
Born at an international crane foundation, Emma was 4 by human caretakers. This led to an unexpected 5 , though she had a wonderful time there. Emma had 6 taken herself as a crane and become deeply attached to humans. She 7 to live with male cranes, and even had a 8 for killing some of them, which made it 9 for her to become a mother.
10 , the two zookeepers didn't want to see the extinction(灭绝) of this precious species. With their patience and efforts, they successfully developed a 11 of artificial breeding(人工繁殖) and natural reproduction. This 12 Emma to give birth to five baby cranes.
The two keepers are proud of their productive work. But before they can be 13 , more efforts must be made, because the population of the crane in the wild is on the 14 , and many other species appear headed toward extinction. 15 , not everyone has realized that wildlife has thoughts, feelings, and most importantly, equal rights to survive.
1.A.surviving B.migrating C.competing D.disappearing
2.A.kill B.save C.determine D.remove
3.A.care B.eye C.mind D.mystery
4.A.found B.chosen C.raised D.seized
5.A.effect B.consequence C.victory D.solution
6.A.never B.always C.occasionally D.ever
7.A.destroyed B.refused C.measured D.recovered
8.A.gift B.skill C.trend D.reputati
9.A.amazing B.unbelievable C.important D.impossible
10.A.Therefore B.Moreover C.However D.Instead
11.A.combination B.collection C.solution D.accommodation
12.A.forced B.forbade C.sought D.enabled
13.A.defeated B.grateful C.assured D.tolerant
14.A.list B.rise C.agenda D.decline
15.A.In contrast B.After all C.By the way D.On the contrary
四、语法填空
7.阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
The 15 wild Asian elephants left their habitat in Xishuangbanna National Nature Reserve in Southwest China's Yunnan province and ①_________(move) to the north. 41 days later, the herd traveled to Hongta district, Yuxi city neighboring with the south of Kunming. The ②_________ (locate) was only 20 km away from Kunming's Jingning district and less than 100 km away from the capital's downtown area. The herd, ③_________ (original)consisting of 17 elephants in total at their departure time, ④_________ (report)to leave Xishuangbanna last year. ⑤_________ May 24th, a young elephant found alcoholic food at a villager's home and got drunk. Luckily, the baby elephant, ⑥_________ overslept, rejoined the unit the next day. The 15 elephants continued their journey. The Asian elephant, ⑦_________ (include) on the International Union for Conservation of Nature Red List of Threatened Species as endangered, enjoys Class-A protection in China, the same level as that of the giant panda. Yunnan ⑧_________ (be) the only habitat of wild Asian elephants in China. Before the 1970s, the species was threatened due to many reasons, such as an increase in the human population, reduced forestry areas ⑨_________ illegal(非法的)hunting. The number of elephants dropped significantly. However, due to determined protection efforts in recent ⑩_________ (decade), the Asian elephant population in China has risen from 170 in the 1970s to 300.
五、读后续写
8.阅读下面材料,根据其内容和所给段落开头语续写两段,使之构成一篇完整的短文。
I took a job as a receptionist for a veterinarian(兽医) almost five decades ago. As an enthusiastic animal lover, I accepted the position on condition that I wouldn't have to assist with any wounded animals. I couldn't bear to see any creature in pain. At the end of my first week, we were closing the office for the day when a young man ran up to us holding a severely injured Doberman puppy in his arms and begging us to save his life. The four-month-old pup had been hit by a car.
The doctor and I ran back into the operating room. The only place the skin was still attached to this poor little animal's body was around one shoulder. The vet worked tirelessly for what seemed like hours, stitching(缝合) him back together again. That was the easy part. The puppy had broken multiple bones, including his spine (脊柱). Even if he survived the next few days, we were quite sure he would never walk again.
That day forever changed my life. The veterinarian guided me, and I became his assistant in all things. One of my first jobs was to give that Doberman puppy daily physical care. I remembered moving his tiny legs to try to keep his muscles from withering (萎缩). Weeks went by until one day, I felt this little fighter push back ever so slightly. And he continued to push back till he could finally use his legs. He recovered.
A year later, I walked into the clinic's waiting room and saw a huge Doberman who had been standing quietly with his owner on the opposite side of the room. I called the name of the next client.
注意:续写词数应为150左右。
Suddenly, the huge Doberman broke loose and rushed toward me. ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
I went on to be a vet technician for 14 years, and since retirement, I've volunteered at a no-kill animal shelter. ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
六、书面表达
9. 假如你叫李华,你所生活的城市周围有很多动植物正逐渐减少,请你对此现象向有关部门写一封信,分析造成这种现象的原因,并根据实际情况提出几条切实可行的建议。以下几条要点需包括在内:
1. 野生动植物的现状;
2. 分析造成许多野生动植物濒临灭绝的原因;
3. 提出几条保护野生动植物的具体措施。
注意:
1.不可遗漏要点,可适当增加细节,以使行文连贯;
2.词数80左右,开头和结尾已给出,不计入总词数。
Dear Sir or Madam,
I'm writing to give some suggestions to protect the wildlife living in and around our city.
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
I hope my suggestions are of much help.
Yours sincerely,
Li Hua
参考答案
1.答案：(1)-(3) DAD
解析：(1).细节理解题。根据文章第一段的"There I saw Ma Shwe with her three-month-old calf struggling in the fast-rising water, and it was a life-and-death struggle... holding her whole body against the rushing water..."可知，Ma Shwe尽可能地贴近河岸,抓住小象来对抗洪水。故选D项。
(2).细节理解题。根据文章第一段中对Ma Shwe营救小象的细节的描写可知，Ma Shwe是在寻找一个安全的地方。文章第二段第三句话"I knew, as well as she did, that there was one spot(地点) where she could get to the bank, but it was on the other side from where she had put her calf."再次说明她是通过把小象放到一个安全的地方来营救小象的。故选A项。
(3).推理判断题。根据文章对小象的描写可知，小象一直处于紧张、害怕的状态，直到象妈妈成功地救了自己并来到自己身边时，小象的害怕和紧张情绪才得以平复，所以象妈妈的吼叫也像是音乐一般成为对小象的一种抚慰。故选D项。
2.答案：1.D; 2.C; 3.A; 4.B
解析：1.主旨大意题。根据第一段第一句"... gray wolves were reintroduced to Yellowstone National Park. " 和最后一段第一句"The government spent nearly 30 years coming up with a plan to reintroduce the wolves. "可知,文章主要介绍了黄石国家公园的灰狼消失后产生的影响以及当地政府重新引入灰狼的计划。故选D项。
2.词义猜测题。根据第二段可知,在黄石国家公园,灰狼曾经随处可见,但是到了20世纪20年代,由于人类活动频繁,灰狼基本消失,它们迁徙到了加拿大的森林深处,那里很少有人类活动。因此可推测灰狼因为人类的发展被迫离开。force out意为"赶出去",与displace意思相近,故选C项。
3.细节理解题。根据第三段可知,灰狼的消失带来了很多意料之外的后果,鹿和麋鹿的数量激增,它们消耗了大量的植被,破坏了公园里植物的多样性同时丛林狼的数量也迅速增长, 造成赤狐数量的减少和河狸的消失。因此灰狼的消失破坏了当地的生态,故选A项。
4.推理判断题。由文章最后一段最后一句话中的a valuable experiment可推知,作者对黄石国家公园的灰狼回归计划持赞同的态度,故选B项。doubtful意为"怀疑的";positive意为 "赞同的";disapproving意为"不赞成的";uncaring意为"漠不关心的"。
3.答案：1.A; 2.B; 3.C; 4.A
解析： 1.细节理解题。由第一段中的...still alive, but has almost disappeared 可知,应选 A。
2.B 推理判断题。第四段讲述了baiji减少的原因:它们是一种靠声音辨别方向的动物,随着住在长江沿岸的人的增多,长江变得喧闹,它们就找不到方向,找不到食物和同伴了,所以数量逐渐减少。
3.C 推理判断题。baiji数量减少最重要的原因就是它们要依靠声音辨别方向,而人类活动把它们所需要的宁静破坏了,最好的办法自然就是还给它们原有的宁静环境——建一片自然公园,当然不可能将整个长江建成自然公园,所以是一部分, C对B错;只需把受伤的baiji带回研究中心治疗,不是把每条都抓回去,最适合它们的家还是长江,故A错;让许多人到长江只会加剧baiji灭亡而不是帮助它们,故D错。
4.A 推理判断题。根据全文内容推知人们可以采取措施来保护瀕临灭绝的动物。
4.答案：1-4 BCDD
解析：1.细节理解题。根据第二段第一句"With such models, scientists have found out some key principles operating in food webs."可知，应选B项。
2.推理判断题。根据第二段第句"When a predator(掠食动物) always eats huge numbers of a single prey(猎物), the two species are strongly linked..."可知，当一种掠食动物总是吃掉数量庞大的单一种类的猎物时，这两种动物有较强关联；结合下文可知，有较弱关联的两个物种，掠食动 物有广泛的食物选择、容易找到新的猎物，故排除A、B项。 D项在文中没有提及，也排除。故选C项。
3.细节理解题。根据第三段第二句"In the 1960s, scientists proposed that predators at the top of a food web had a surprising amount of control over the size of populations of other species—including species they did not directly attack."可知，若一个食物链顶层的掠食动物大规模减少， 其他物种的数量将会经历意想不到的改变。故选D项。
4.细节理解题。根据最后一段第二句"Ideally, the system would tell us when to adapt human activities that are pushing an ecosystem toward a breakdown or would even allow us to pull an ecosystem bade from the borderline."可知，预警系统是通过发出需要采取预防行动的信号来帮助我们维护生态平衡。故本题选D项。
5.答案：1-5 DGBAE
解析：1.根据前面一句"It can find small amounts of substances in water, such as blood, body liquids and chemicals produced by animals."可知鯊鱼灵敏的嗅觉可以使它们找到水里的血、体液以及动物产生的化学物质。这样的能力让它们迅速找到食物。故D项正确。
2.本句叙述鲨鱼的繁衍方式。根据前面一句"About forty percent of all sharks lay eggs."可知百分之四十的鲨鱼产卵。G项指其余的鲨鱼直接生出小鲨鱼。故G项正确。
3.根据前面一句"Their hunting activities mean that the numbers of other fish in ocean waters do not become too great."可知鲨鱼可以保持海洋的生态平衡，不让某些生物的数量太大。这间接地保护了海洋里的其他生物。故B项正确。
4.根据前一句"Collectors pay thousands of dollars for the jaws of a shark."和后一句"The skin of a shark can be used like leather."可知本段是在叙述鲨鱼各部位的价值，只有A项与这两句属于同类。故A项正确。
5.根据前面一句"Sharks are among the oldest animals on Earth, but some sharks are in danger of disappearing from Earth."可知某些鲨鱼已经面临着灭绝的危险。一旦某一区域内大量的鲨鱼被捕杀，该区域的鲨鱼就很难恢复到正常的数狱。故E项正确。
6.答案：1-5 DBACB 6-10 ABDDC 11-15 ADCDB
解析：1.句意: 每天都有物种在消失。根据上句中的threatened及下文列举的濒危野生动物白枕鹤可知, 此处表示正在消失(disappearing), 故选D。survive幸存; migrate迁徙; compete竞争。
2.句意: 所以科学家们在尽最大努力拯救瀕危物种。由下文提到的Chris和Tim拯救白枕鹤可知, 此处表示拯救。save...from...拯救......免于, 故选B。kill杀死; determine确定; remove去除。
3.句意: Emma, 一只雌性白枕鹤, 自2004年来到这家动物园以后, 就一直由他们照看。由下文叙述可知, Chris和Tim一直在照顾Emma。in one's care由......来照看, 故选A。eye眼睛; mind思维; mystery神秘的事物, 奥秘。
4.由下文的become deeply attached to humans可知, Emma是由人类养大(raised)的。故选C。find找到; choose选择; seize抓住。
5.这导致了出乎意料的结果。此处指后文描述的它无法正常繁殖后代这个后果(consequence), 故选B。effect影响; victory胜利; solution解决方法。
6.Emma从来没把自己看作是只鹤。由下文提到become deeply attached to humans可知, Emma从来没把自己看成是白枕鹤, 故选A。always总是, 一直; occasionally偶尔; ever曾经。
7.结合语境可知, Emma不把自己看作是只鹤, 自然会拒绝(refused)和雄鹤一起生活, 故选B。destroy毁灭; measure测量; recover恢复。
8.它甚至会因为杀死一些雄鹤而出名(have a reputation), 故选D。gift天赋; skill技能; trend趋势。
9.这使得它不可能成为母亲。Emma拒绝与雄鹤一起生活, 自然不可能繁殖, 故选D。amazing令人惊讶的; unbelievable难以置信的; important重要的。
10.句意: 然而, 两位动物饲养员不想看到这一珍稀物种灭绝。"它不可能成为母亲"与"这两位动物饲养员不想看到这一珍稀物种灭绝"是转折关系, 故选C。therefore因此; moreover而且; instead代替, 而不是。
11.他们成功地将人工繁殖和自然繁殖两种繁殖方式结合了起来。combination结合, 故选A。collection收集; solution解决办法; accommodation调节, 适应。
12.句意: 这种方式使Emma生了五只幼鹤。enable sb. to do sth.使某人做某事, 是固定搭配, 故选D。force迫使, 强迫; forbid禁止; seek寻找。
13.但在他们有把握(assured)之前, 必须做出更多的努力。defeated被击败的; grateful感激的; tolerant容忍的。
14.野生白枕鹤的数量在下降。on the decline在下降, 在衰退。故选D。list清单; rise上升; agenda议程。
15.句意: 毕竟(After all), 不是每个人都意识到了野生动物有思想, 有感情。最重要的是, 它们有平等的生存权利。联系上下文可知, 应选B。in contrast相比之下; by the way顺便提一下; on the contrary恰恰相反。
7.答案：1. moved2. location3. originally4. was reported5. On6. which7. included8. is9. and10. decades
解析：
1. moved【解析】考查时态。本句描述的是过去的事,move和前面的left一样,是由and连接的两个并列的谓语动词。
2. location【解析】考查词性转换。根据前面的定冠词可知,此处应该使用名词。
3. originally【解析】考查副词。修饰动词,所以要用副词。
4. was reported【解析】考查时态和语态。根据句中的时间状语可知,本句是描述过去的事;分析句子结构可知本句缺少谓语动词,且report和主语为动宾关系,所以此处要用一般过去时的被动语态。
5. On【解析】考查介词。on表示具体的某一天。
6. which【解析】考查定语从句。分析句子结构可知,本句是非限制性定语从句,先行词是elephant,指物。
7. included【解析】考查非谓语动词。分析句子结构可知,此处作定语修饰 elephant,且与elephant是动宾关系,所以要用过去分词。
8.is【解析】考查主谓一致。根据上下文可知,本句描述的是客观事实,所以要用一般现在时;又因主语是单数,所以此处要填is。
9.and【解析】考查连词。根据句意可知,此处上下文为顺接关系。
10. decades【解析】考查名词单复数。根据后面的时间状语—1970s可知,此处指的是近几十年,所以要用该名词的复数形式。
8.答案：
Suddenly, the huge Doberman broke loose and rushed toward me. I found myself pinned against the wall in amazement. To my surprise, the dog stood on his legs, his front paws on my shoulders, washing my face with joyful and abundant kisses! His owner came to me and told me that he was the dog we had saved one year ago. More than excited to see him again in such good health, I hugged him tightly, determined to become a good vet technician at that moment.
I went on to be a vet technician for 14 years, and since retirement, I've volunteered at a no-kill animal shelter. Being a vet technician and a volunteer at the no-kill animal shelter. I succeeded in saving more animals, which often made me think of the grateful huge Doberman. Although many years have passed, I still shed tears in amazement at the display of love and gratitude the dog had for me. All the dogs knew they had been rescued by me and they were grateful to me.
9.答案：
Dear Sir or Madam,
I'm writing to give some suggestions to protect the wildlife living in and around our city. As we know, many species of wildlife are in danger of extinction. This is because the environment that they are living in has been destroyed greatly.
With the development of cities, water and air are seriously polluted. Their living areas are becoming smaller and smaller. They not only have little to cat, but also can be killed by human beings. These species of wildlife are important part of our life. Personally, more measures should be taken to protect them from being hurt. Firstly, more laws must be made to stop people from cutting down trees. Secondly, all the factories must clean the waste water before it is poured into rivers or lakes. Thirdly, more reserves should be set up so that they can live safely.
I hope my suggestions are of much help.
Yours sincerely,
Li Hua
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