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Unit 5 The power of plants 单元测试题
（考试时长：60 分钟 满分：100 分）
一、单项选择（每小题 2 分，共 20 分）
( ) 1. Plants take water and nutrients from the soil through their ______.
A. roots B. leaves C. flowers D. fruits
( ) 2. You should water the young plants regularly ______ they dry out.
A. so that B. in case C. even if D. as if
( ) 3. Trees ______ fresh oxygen for people to breathe every day.
A. produce B. protect C. provide D. prepare
( ) 4. With enough sunlight and water, the little seed will ______ into a big tree soon.
A. grow B. become C. turn D. get
( ) 5. Grass can ______ the soil from being washed away by rain.
A. stop B. protect C. prevent D. keep
( ) 6. The ______ of a plant makes food using sunlight and water.
A. root B. stem C. leaf D. flower
( ) 7. It’s ______ to learn how plants help our environment.
A. useless B. important C. boring D. difficult
( ) 8. Some plants ______ sweet fruits that people and animals love to eat.
A. produce B. protect C. provide D. prepare
( ) 9. —I planted some tomato seeds in my garden yesterday.
—______. I hope they grow well.
A. Sounds great B. Don’t mention it
C. That’s all right D. It’s my pleasure
( )10. Plants ______ carbon dioxide from the air during photosynthesis.
A. take up B. take in C. take off D. take away
二、用所给单词的适当形式填空（每小题 1 分，共 10 分）
1. Most plants have many thin ______ (root) under the ground.
2. It’s necessary ______ (protect) wild plants in our countryside.
3. The apple tree ______ (produce) a lot of sweet apples last autumn.
4. With enough care, the little seed will ______ (grow) into a strong plant.
5. The ______ (leaf) of the tree turn yellow and fall down in autumn.
6. We should make good ______ (use) of plants to improve our environment.
7. It’s ______ (importance) to learn about the power of plants.
8. Before planting, we need to do some ______ (prepare) for the soil.
9. Some ______ (mystery) plants in the rainforest are still unknown to humans.
10. Students should ______ (cooperate) with each other when doing a project about plants.
三、完形填空（每小题 1 分，共 10 分）
Plants are amazing gifts from nature. They are important for all l______iving things on Earth. Without plants, we couldn’t live at all.
Plants have different parts with different jobs. Their 1 go deep into the soil to take water and nutrients. The 2______ carries water from the roots to the leaves. Leaves are like small factories. They use sunlight, water and carbon dioxide to 3 ______food for the plant and fresh oxygen for us.
Many plants grow flowers which turn into 4______. These fruits have seeds inside them. When seeds fall on the ground, they may 5______ into new plants if they get enough sunlight and water.
Plants also help 6______ our environment. They keep the soil from being washed away by rain. They make our cities 7 ______and cooler. Some plants can even clean the air around us.
Humans have used plants for thousands of years. We use them for food, medicine and building materials. Now, more and more people start to 8______ how important plants are. They work together to 9______ wild plants and plant more trees every year.
The power of plants is truly great. We should never 10______ to protect them. Our future depends on them.
( ) 1. A. leaves B. roots C. stems D. flowers
( ) 2. A. root B. leaf C. stem D. fruit
( ) 3. A. produce B. protect C. provide D. prepare
( ) 4. A. seeds B. leaves C. fruits D. flowers
( ) 5. A. grow B. become C. turn D. get
( ) 6. A. make B. protect C. change D. create
( ) 7. A. greener B. dirtier C. warmer D. busier
( ) 8. A. forget B. realize C. remember D. imagine
( ) 9. A. cut B. plant C. protect D. destroy
( )10. A. start B. stop C. try D. continue
四、阅读理解（每小题 2 分，共 10 分）
Plants are one of the most important parts of our planet. They play a key role in keeping the Earth healthy and supporting all kinds of life.
First, plants produce oxygen through photosynthesis. Every day, they take in carbon dioxide from the air and give out fresh oxygen. This is essential for humans and animals to breathe. Without plants, the air would become full of harmful gases and we couldn’t survive.
Second, plants provide food for almost all living things. Humans eat fruits, vegetables and grains that come from plants. Animals like cows and sheep eat grass and other plants. Even meat-eating animals depend on plants indirectly, because the animals they eat feed on plants.
Third, plants help protect the environment. Their roots hold the soil together, so it won’t be washed away by heavy rain or blown away by strong winds. They also make the air cleaner and help keep the temperature cool in hot weather.
Now, many people are working to protect wild plants and plant more trees. They know that protecting plants means protecting our own home.
( ) 1. What do plants take in during photosynthesis
A. Oxygen B. Carbon dioxide C. Water D. Sunlight
( ) 2. Which of the following is NOT true according to the passage
A. Plants produce oxygen for us to breathe.
B. Only humans depend on plants for food.
C. Plants help keep the soil from being washed away.
D. Plants can make the air cleaner.
( ) 3. Why do meat-eating animals depend on plants
A. They eat plants directly.
B. The animals they eat feed on plants.
C. They need oxygen from plants.
D. They live near plants.
( ) 4. What is the main idea of the passage
A. How plants grow.
B. The importance of plants.
C. Different kinds of plants.
D. How to protect plants.
( ) 5. What are people doing to protect plants
A. Cutting down trees.
B. Polluting the soil.
C. Protecting wild plants and planting more trees.
D. Eating more vegetables.
五、根据句意及首字母提示补全单词（每小题 1 分，共 10 分）
1. Plants get water and nutrients from the soil through their r______.
2. L______ use sunlight to make food for plants.
3. Plants p______ oxygen which is necessary for us to breathe.
4. We should p______ wild plants from being destroyed.
5. The s______ of a plant carries water from roots to leaves.
6. It’s i______ to learn about how plants help our environment.
7. Some plants grow sweet f______ that we love to eat.
8. With enough sunlight and water, seeds will g______ into plants.
9. Plants can keep the soil from being w______ away by rain.
10. We need to make p______ before planting seeds in the garden.
六、句型转换（每小题 2 分，共 10 分）
1. Plants provide fresh oxygen for humans.（改为否定句）
Plants ____ ____ fresh oxygen for humans.
2. People plant millions of trees every year.（改为被动语态）
Millions of trees ____ ____ by people every year.
3. We should water the plants regularly. They will dry out.（用in case合并句子）
We should water the plants regularly ____ ____ they dry out.
4. Plants are important because they produce oxygen.（对划线部分提问）
____ ____ plants important
5. This is the tree. It produces delicious apples.（合并为定语从句）
This is the tree ____ ____ delicious apples.
七、补全对话（每小题 2 分，共 10 分）
A: Hi, what are you doing now
B: I’m reading a book about plants. It’s really interesting!
A: 1.______ I know little about how plants help us.
B: It talks about how plants produce oxygen, provide food and protect our environment.
A: Wow, that’s cool. 2.______
B: We can plant more trees, stop cutting down wild plants and water young plants regularly.
A: Are plants easy to grow
B: No. 3.______ They need enough sunlight, water and good soil.
A: I want to grow some tomato plants in my garden. 4.______
B: You can prepare the soil first, then plant the seeds and water them every day.
A: Thanks a lot for your advice!
B: 5.______ It’s my pleasure.
A. What can we do to protect plants
B. What does the book talk about
C. That’s useful advice.
D. Growing plants needs patience and care.
E. You’re welcome.
八、任务型阅读（每小题 2 分，共 10 分）
Plants are amazing and powerful. They are essential for life on Earth.
First, plants produce oxygen. They take in carbon dioxide and release oxygen through photosynthesis. This oxygen is necessary for humans and animals to breathe. Without plants, there would be no oxygen in the air.
Second, plants provide food. Almost all food we eat comes directly or indirectly from plants. Fruits, vegetables and grains are all from plants. Even meat comes from animals that eat plants.
Third, plants protect the environment. Their roots hold the soil, preventing it from being washed away. They also make the air cleaner and help reduce noise pollution.
Many people are now planting more trees and protecting wild plants. They understand that plants are important for our future.
根据短文内容，回答下列问题
1. What do plants take in to produce oxygen
____________________________________________________________________
2. Where does almost all our food come from
____________________________________________________________________
3. How do plants protect the soil
____________________________________________________________________
4. What else do plants do besides producing oxygen and providing food
____________________________________________________________________
5. What are people doing to protect plants
____________________________________________________________________
九、书面表达（10 分）
题目：The Power of Plants
写作要求：1. 简单介绍你对植物力量的认识；2. 结合本单元核心词汇：produce, protect, grow, provide, in case, cooperate；3. 谈谈自己对保护植物的想法；4. 词数80~100词，语句通顺，不出现真实校名与人名。
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参考答案
一、单项选择
1.A 2.B 3.C 4.A 5.B 6.C 7.B 8.A 9.A 10.B
二、用所给单词适当形式填空
1. roots 2. to protect 3. produced 4. grow 5. leaves
6. use 7. important 8. preparations 9. mysterious 10. cooperate
三、完形填空
1.B 2.C 3.A 4.C 5.A 6.B 7.A 8.B 9.C 10.B
四、阅读理解
1.B 2.B 3.B 4.B 5.C
五、首字母填空
1. roots 2. Leaves 3. produce 4. protect 5. stem
6. important 7. fruits 8. grow 9. washed 10. preparations
六、句型转换
1.don't provide 2. are planted 3. in case 4. Why are 5. which/that produces
七、补全对话
1.B 2.A 3.D 4.C 5.E
八、任务型阅读
1. Carbon dioxide.
2. Almost all our food comes directly or indirectly from plants.
3. Their roots hold the soil, preventing it from being washed away.
4. They protect the environment, make the air cleaner and help reduce noise pollution.
5. They are planting more trees and protecting wild plants.
九、书面表达范文
The Power of Plants
Plants are powerful and essential to our lives. They produce oxygen for us to breathe and provide food for humans and animals. Their roots protect the soil from being washed away, and they help keep our planet cool and clean.
To help plants grow well, we need to water them regularly in case they dry out. We should also cooperate with our classmates to plant more trees in our school or community.
I believe protecting plants is protecting ourselves. I will learn more about plants and encourage people around me to love and protect them. Our future depends on these amazing gifts from nature.

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