外研版（2024）七年级上册（2024）Unit 5 The power of plants课时练习

这是一份外研版（2024）七年级上册（2024）Unit 5 The power of plants课时练习，共5页。试卷主要包含了完形填空，阅读理解，单句语法填空，任务型阅读，书面表达等内容，欢迎下载使用。
姓名__________班级__________分数_____________
一、完形填空（共10小题，每空1分，满10分）
阅读下面短文，掌握其大意，然后从A、B、C三个选项中选出最佳选项。
Plants are very imprtant in ur life. They give us fd, xygen and even medicine. Many peple like keeping small plants at hme, such as flwers. My mm has a beautiful rse plant n the balcny. Every mrning, she 1. ______ it with water carefully. She says rses need enugh water and sunlight t grw well.Last mnth, the rse plant lked weak. Its leaves turned yellw. Mm was wrried. She checked the sil and fund it was t dry. S she watered it mre ften. After a week, the plant became healthy again. Nw, it has tw pink rses. They smell 2. ______. I ften stand n the balcny and enjy the flwers.
Plants als help make ur planet green. We shuld nt cut dwn t many trees. Instead, we can 3. ______ mre yung trees. When we plant a tree, we are giving a gift t the earth. Let’s remember: plants are ur gd friends. We must 4. ______ them.One day, my friend Lily asked me, “Why d plants grw twards the light?” I didn’t knw the answer. Then we searched fr infrmatin nline. We learned that plants have a special “ability” t fllw light. This helps them make fd thrugh phtsynthesis (光合作用). It’s really 5. ______!
Plants are everywhere. They grw in parks, frests and even deserts. Sme plants can live withut much water, like cacti (仙人掌). They are strng and brave. I think we can learn a lt 6. ______ plants. Fr example, we shuld be strng like cacti when we face difficulties.
Yesterday, ur class had a trip t a btanical garden (植物园). We saw many kinds f plants there. A guide tld us that sme plants can 7. ______ insects. Isn’t that amazing? I tk many phts f the plants. I want t shw them t my grandparents and tell them 8. ______ I learned abut plants.I lve plants. They make ur life mre beautiful and clrful. I hpe everyne can 9. ______ the imprtance f plants and take gd care f them. Let’s wrk tgether t make ur wrld full f green 10. ______.
1. A. waters B. watered C. watering
2. A. gd B. well C. nicely
3. A. plant B. cut C. pull
4. A. hurt B. prtect C. break
5. A. bring B. interesting C. difficult
6. A. frm B. t C. fr
7. A. catch B. eat C. help
8. A. what B. hw C. where
9. A. frget B. remember C. miss
10. A. flwers B. leaves C. plants
二、阅读理解（共20小题，每空2分，满40分）
根据短文内容，从A、B、C、D四个选项中选出最佳选项。
（A）
Plants are amazing living things. They can make their wn fd. Hw? Thrugh phtsynthesis. T d this, plants need three things: sunlight, water and carbn dixide (二氧化碳).
Leaves are the main part fr phtsynthesis. They have small hles called stmata. Carbn dixide cmes int the leaves thrugh these hles. The rts f the plant take water frm the sil and send it t the leaves. Then, with the help f sunlight, the leaves turn water and carbn dixide int fd and xygen. The fd helps the plant grw, and the xygen is released int the air. We need this xygen t breathe. S plants are very imprtant fr us and the earth.
1. What d plants need fr phtsynthesis?
A. Sunlight, water and xygen.
B. Sunlight, water and carbn dixide.
C. Water, xygen and carbn dixide.
D. Sunlight, xygen and sil.
2. What are the small hles in leaves called?
A. Rts.B. Stmata.C. Fd.D. Oxygen.
3. Where d plants get water frm?
A. The air.B. The leaves.C. The sil.D. The sunlight.
4. What d leaves turn water and carbn dixide int?
A. Fd and xygen.B. Fd and sil.
C. Oxygen and sil.D. Sunlight and fd.
5. Why are plants imprtant fr us?
A. They can make fd fr us directly.
B. They release xygen which we need t breathe.
C. They take carbn dixide frm us.
D. They help us grw.
（B）
There are many kinds f plants in the wrld. Sme are big, and sme are small. Sme plants live fr a shrt time, and sme can live fr a lng time.
Bamb is a special plant. It grws very fast. Sme bamb can grw up t 1 meter in ne day. Bamb is useful. Peple use it t make many things, like chairs, tables, baskets and even clthes. Pandas lve eating bamb. It is their favrite fd.
Anther kind f plant is the sunflwer. Sunflwers always turn twards the sun. When the sun rises in the east, the sunflwers face east. When the sun sets in the west, they face west. Sunflwers have big yellw flwers. Their seeds are delicius and can be eaten as snacks r used t make il.
1. What is special abut bamb?
A. It is very small.B. It grws very fast.
C. It lives fr a shrt time.D. It can’t be used t make things.
2. What d peple use bamb t make?
A. Only chairs and tables.B. Only baskets and clthes.
C. Chairs, tables, baskets and clthes.D. Pandas’ fd.
3. What is pandas’ favrite fd?
A. Sunflwers.B. Sunflwer seeds.
C. Bamb.D. Oil.
4. Why are sunflwers called “sunflwers”?
A. Because they grw in the sun.
B. Because they always turn twards the sun.
C. Because their flwers are as big as the sun.
D. Because their seeds are like the sun.
5. What can sunflwer seeds be used fr?
A. Only as snacks.B. Only t make il.
C. Bth as snacks and t make il.D. T make chairs.
（C）
D yu knw that sme plants can “talk” t each ther? Well, nt in the way we d, but they have their wn ways t send messages.
When a caterpillar (毛毛虫) eats a tmat plant’s leaves, the tmat plant will make a special chemical. This chemical tells ther tmat plants nearby, “Be careful! There are caterpillars here!” Then the ther tmat plants will make a different chemical. This chemical makes their leaves taste bad. S the caterpillars wn’t eat them.
Sme plants als help each ther. Fr example, when a bean plant grws next t a crn plant, they help each ther. The bean plant can take nitrgen (氮) frm the air and put it int the sil. The crn plant needs nitrgen t grw well. In return, the crn plant grws tall and prvides shade fr the bean plant. S they bth grw better tgether.
1. Hw d sme plants “talk” t each ther?
A. By speaking like humans.B. By making special chemicals.
C. By mving their leaves. D. By grwing tall.
2. What des a tmat plant d when a caterpillar eats its leaves?
A. It runs away.
B. It makes a special chemical t warn ther tmat plants.
C. It asks the crn plant fr help.
D. It stps grwing.
3. What des the chemical made by ther tmat plants d?
A. It makes the caterpillars grw fast.
B. It makes their leaves taste bad.
C. It makes the tmat plants die.
D. It makes the air clean.
4. Hw d bean plants and crn plants help each ther?
A. The bean plant prvides shade fr the crn plant.
B. The crn plant takes nitrgen frm the air fr the bean plant.
C. The bean plant puts nitrgen int the sil fr the crn plant, and the crn plant prvides shade fr the bean plant.
D. They dn’t help each ther.
5. What is the main idea f the passage?
A. Sme plants can “talk” and help each ther.
B. Caterpillars like eating tmat plants.
C. Bean plants and crn plants are gd friends.
D. Plants can make chemicals.
（D）
Plants need different things t grw well. The amunt f sunlight, water and sil quality (土壤质量) all matter.
Sme plants need lts f sunlight. Fr example, rses and sunflwers lve the sun. They shuld be planted in places where they can get at least 6 hurs f sunlight every day. If they dn’t get enugh sunlight, they will grw slwly and may nt flwer.
Other plants dn’t like t much sunlight. They prefer shade. Ferns (蕨类植物) and lilies (百合花) are such plants. They grw well in places like under trees r next t walls. T much sunlight will make their leaves turn brwn and dry.
Water is als imprtant. Mst plants need t be watered regularly, but nt t much. If yu water a plant t much, its rts will rt (腐烂) and the plant will die. If yu dn’t water it enugh, the leaves will wilt (枯萎). Yu can check the sil befre watering: if the tp f the sil is dry, it’s time t water the plant.
Gd sil is rich in nutrients (营养). It shuld be lse (疏松的) s that air and water can reach the rts easily. Yu can add cmpst (堆肥) t the sil t make it better. Cmpst is made frm ld leaves, fruit peels and vegetable scraps. It gives nutrients t the sil and helps plants grw.
1. Hw much sunlight d rses and sunflwers need every day?
A. At least 4 hurs.B. At least 6 hurs.
C. At mst 6 hurs D. N sunlight.
2. Which plants prefer shade?
A. Rses and sunflwers. B. Ferns and lilies.
C. Bamb and beans. D. Tmates and crn.
3. What will happen if yu water a plant t much?
A. Its leaves will wilt.B. It will grw very fast.
C. Its rts will rt and it will die.D. It will flwer mre.
4. Hw can yu knw when t water a plant?
A. Water it every mrning.B. Water it every afternn.
C. Check the sil: if the tp is dry, water it. D. Water it when the leaves turn brwn.
5. What can we add t the sil t make it better?
A. Old leaves.B. Fruit peels.C. Vegetable scraps.D. Cmpst.
三、单句语法填空（共10小题，每空1分，满10分）
1. Plants ______ (need) sunlight, water and carbn dixide t grw.
2. My sister ften ______ (help) my mm water the flwers n weekends.
3. Lk! The sunflwer ______ (turn) twards the sun nw.
4. We ______ (visit) a btanical garden last Sunday.
5. Bamb ______ (grw) very fast. Sme can grw 1 meter a day.
6. It’s imprtant ______ (prtect) plants because they are ur friends.
7. The guide ______ (tell) us many interesting things abut plants yesterday.
8. When I gt hme yesterday, my dad ______ (water) the rse plant.
9. Sme plants ______ (can) live withut much water, like cacti.
10. We ______ (learn) abut phtsynthesis in science class last week.
四、任务型阅读（共5小题，每题2分，满10分）
阅读下面短文，根据短文内容完成表格。
Plants are very imprtant. They have many uses. Let’s learn abut sme cmmn plants and their uses.
First, wheat (小麦) is a very useful plant. Peple use wheat t make bread, ndles and cakes. It is ne f the mst imprtant fd crps (农作物) in the wrld.
Secnd, cttn (棉花) is als imprtant. Its flwers are white. After the flwers die, they becme cttn blls (棉桃). Peple pick the cttn frm the blls and use it t make clthes, twels and bed sheets.

Third, tea plants are famus. Peple pick the yung leaves f tea plants. Then they prcess (加工) the leaves t make different kinds f tea, like green tea, black tea and lng tea (乌龙茶). Many peple like drinking tea every day.
Furth, ale vera (芦荟) is a special plant. It has thick leaves. The juice inside the leaves can help with small burns (烧伤). Peple als use ale vera juice t make skin care prducts (护肤品), like ltins (乳液) and creams.
Plants Uses
Wheat 1. ______
Cttn 2. ______
Tea plants 3. ______
Ale vera 4. ______; 5. ______
五、书面表达（20分）
假设你是李华，你最近在学校的植物园参与了植物种植活动。请你给你的笔友Peter写一封邮件，向他介绍这次活动。内容包括：
1. 活动时间和地点；
2. 你种植的植物以及种植过程（如松土、播种、浇水等）；
3. 种植过程中的感受或遇到的小困难；
4. 你从这次活动中学到的关于植物的知识或道理。
要求：
1. 词数60-80左右；
2. 条理清晰，语句通顺，语法正确；
3. 邮件的开头和结尾已给出，不计入总词数。

Dear Peter,
I hpe yu are ding well. I want t tell yu abut a plant - grwing activity I jined recently.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yurs,
Li Hua

参考答案
一、完形填空

1. A 2. A 3. A 4. B 5. B 6. A 7. A 8. A 9. B 10. C

二、阅读理解
（A）1. B 2. B 3. C 4. A 5. B
（B）1. B 2. C 3. C 4. B 5. C
（C）1. B 2. B 3. B 4. C 5. A
（D）1. B 2. B 3. C 4. C 5. D
三、单句语法填空
1. need 2. helps 3. is turning 4. visited 5. grws 6. t prtect 7. tld 8. was watering 9. can 10. learned / learnt
四、任务型阅读
1. Peple use wheat t make bread, ndles and cakes.
2. Peple use cttn t make clthes, twels and bed sheets.
3. Peple prcess the yung leaves f tea plants t make different kinds f tea.
4. The juice inside ale vera leaves can help with small burns.
5. Peple use ale vera juice t make skin care prducts, like ltins and creams.

五、书面表达（范文）

Dear Peter,
I hpe yu are ding well. I want t tell yu abut a plant - grwing activity I jined recently.
It was last Friday afternn in ur schl’s btanical garden. I chse t grw a sunflwer. First, I lsened the sil with a small shvel. Then I put sme sunflwer seeds int the sil and cvered them with a little sil. Finally, I watered the seeds carefully.

At first, I was wrried I wuld water t much. But the teacher tld me t check the sil, which helped a lt. I felt excited while ding it.
Frm this activity, I learned that sunflwers need lts f sunlight. I als knew that grwing plants needs patience. It was a great experience!
Yurs,
Li Hua