高中英语外研版 (2019)选择性必修 第二册Unit 4 Breaking boundaries精品课后练习题

Unit 4    Breaking  boundaries

Period 1   Starting out and understanding ideas

（练习原卷版）

I：单词拼写

1. At present, It is __________(极其重要的) that we act to stop the destruction of the rain forests.
2. It was a ___________(奇迹) that the eight-year-old missing boy arrived home safe and sound.
3. In addition to the school, the village has a ________(诊所), which was also built with the local government  support.
4. According to a shocking ____________ (统计数据), the policy has affected health systems, health budgets and the drive to reduce poverty.
5. Combating climate change is an objective not only for us but also for the future of ________(人类). 
6. The new graduate chose to work as a nurse on the children's ____________ (病房).
7. The _____________ (专家) walked onto the platform and seated himself in a chair, prepared for answering questions. 
8. Scientists in this field continue to push back the _____________ (边界) of human knowledge. 
9. When I needed _________ (消毒) the nursing bottles, I would come here to use the microwave oven.
10. Cuts in the health service could have ______________ (悲剧的) consequences for patients.

II：单句语法填空

1. It is an independent, non-profit organization whose mission is to provide medical care to those _____________ (affect) by conflict , epidemics and disasters.
2. We asked him what the prospects are for a vaccine to prevent ___________(infect) in the first place.
3. I felt a growing sense of pride __________ part of this extraordinary medical team.
4. We all believe that her intelligence can finally compensate ___________ her poor experience in the job.
5. He has no cell phone or computer, not _____________ (mention) surfing the Internet.
6. We know that there was little hope for the patient, but we did everything we could _________ (save) her.
7. First of all, this difficult problem has to___________ ( tackle), thus enabling us to proceed to the others.
8. Much to my __________ (relieve), after experimenting with this method for some time, I realize my great change!
9. ___________ my lack of working experience, I was thought to have no qualification for this job.
10. The teacher's selfless __________ (devote) to the cause of education is well known, and all her students respect and love her deeply.

III. 选词并用其适当的形式填空。

1. _______________, I love my school. I find my school life more and more meaningful and colorful.
2. I decided to______________ to emphasize that we will provide you any information you want.
3. To succeed in a new field, __________________ or do anything new in life, you have to be willing to fail. 
4. English learning is a long journey, but I ________________ to word hard and well.
5. Everyone has the right to good medical care __________________ their ability to pay.
6. The rules warn that he doctor must not allow the patient to _____________________.
7. If you two can ________________________, you won’t quarrel so much, I believe.
8. I'm very much afraid that your friend may _______________________ the crime.
9. There is often _______________ understanding between parents and children, which might result from lacking communication. 
10. we should figure out some ways to stop people from polluting the river and ____________ them to fight against pollution. 

IV.  七选五：从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。

Humans were made for walking. With our upright posture and strong leg muscles, our bodies were actually designed with walking in mind which makes it such perfect exercise. It’s kind to our bodies and great for our waistlines.    1   

Maybe you already love to walk, but you’re getting tired of tracing the same old route day after day, or maybe you’re new to walking and aren’t sure how to get started.    2    Ask yourself, what do you want to get out of walking aside from the health benefits? Do you want to meet other people? See new places? Get out into the countryside or explore a new city? Knowing your goals will help you decide on the type of walk you want to do.

If making friends and socializing is your goal, call up your friends and schedule walks with them.   .3     Many malls have groups that come every day, or every weekend, to “walk the mall.” These groups are always happy to include one more walker!

    4   Many large cities have incredible gardens and parks that include quiet walking trails getting you off the beaten path. Thanks to the Rails to Trails program, railways across the country are being transformed into scenic walking paths that are a perfect way to seek calmness.

From the benefits to your heart to your overall happiness, walking is just plain good for you.    5   .          It’s a fantastic way to get to know a place by the power of your own two feet.

A. Headed to a new city?

B. This month, pick up a map and start walking.

C. Ask your friends where they like to walk and just go there.

D. Either way, it's time to accept the idea of walking with a purpose.

E. And best of all, it’s a great way to see new things and meet new people!

F. Recently, science has proved that walking is good for your body shape.

G. If you're after walking alone, ask about local hikes that get you out of town and into the countryside.

V: 阅读理解。阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选。

 Scientists in Western Australia claim to have made a new discovery—they have found gold in the leaves and twigs of trees. The researchers believe that the trees suck up the gold from deep underground，over 30 metres down. The discovery has been described as the first of its kind in the world. Australian gold exploration companies are pleased because it will make finding gold cheaper. Rather than drilling deep holes to find gold，they have more ways to examine tree leaves and branches. There is only a tiny amount of gold in the leaves. It would take 500 trees to make one gold ring. The gold is found using a special X—ray machine owned by an Australian government agency. A pure X-ray and a powerful microscope scan the leaves and branches.

The claim that this is the first time that gold particles(微粒)have been found in living material might not be true，though. Ancient Chinese wisdom understood the connection between plants and the precious stones and minerals underneath them. They used plant life to find minerals and that was thousands of years ago. In the Zhou Dynasty，it was written in a book that a certain plant grew only near deposits of gold. Over the next 2，000 years，Chinese people wrote about different plants and how they grew，showed where minerals and precious stones such as jade，copper，lead，silver and gold were.

Even more importantly，in the 1 000s，Su Song described how copper，gold，silver，lead and tin were observed and taken from certain plants. These were amazing scientific discoveries. Meanwhile，this knowledge was unknown in the rest of the world until about 1 600.This was when a British man realised that oak trees grew larger and greener where there was alum(明矾)in the ground. Maybe ancient Chinese has more knowledge to teach modern scientists.

1. What can we know from Paragraph 1 ?

A. 500 dead trees can make one gold ring.

B. The trees can absorb the gold from deep underground.

C. Scientist have found gold 30 meters below underground.

D. The companies find it hard to find gold.

2. How do scientists find gold in the leaves?

A. By observing the leaves carefully. B. By drilling deep holes.

C. By using a special x-ray. D. By referring to ancient books.

3. Who first discovered that there was connection between plants and minerals?

A. Ancient Chinese people. B. Su Song.

C. Australian scientists. D. A British man.

4. What is the purpose of the last paragraph?

A. To introduce two great scientists in ancient times.

B. To provide more evidence to support the writer’s opinion.

C. To show how ancient people got gold from certain plants.

D. To prove that ancient Chinese has more knowledge than modern scientists.

VI. 语篇填空

     Doctors Without Borders is an independent, non-profit organization ____1____ (found) in Pairs decades of years by a group of doctors and journalists. Its mission is to provide medical care to those affected by conflict, epidemics, diseases or a lack of access____2____ health care. It’s 100 days since I _____3_____ (participate) in a medical team. I felt____4____ my duty as the only one Chinese doctor to go there and offer my help despite I knew I was putting myself at risk.

Three months ago, I arrived in Liberia with the medical team. My mission was ___5____ (relieve) a Canadian specialist in infectious _____6_____ (disease) at the end of her posting. Working together with volunteer doctors of all ages, colors and beliefs, from every continent except Antarctica, I felt a growing sense of pride as part of the extraordinary team, ____7_____ devotion to the cause shone from our eyes.

    When my service ends, someone else will arrive to step into my shoes, ___8_____ the tireless work that new volunteer doctors will go on. In a world still facing many problems, it is ____9_____ (absolute) essential for us all to collaborate to create a global community with ___10____ shared future of peace and prosperity.