Unit 4 质量评价作业

完成时间：_______ 分钟 得分：_______

第一部分 听力理解（共15小题；每小题1分，满分20分）

第一节（共5小题；每小题1分，满分5分）

听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。每段对话读一遍。

1. What time does the zoo open on weekends?

A. At 8:30 a.m. B. At 9:00 a.m. C. At 9:30 a.m.

2. Where did the man see the dolphin show?

A. In an aquarium. B. In a park. C. On TV.

3. Why is the woman worried about the elephants?

A. They are getting sick. B. They don't have enough food. C. Their living area is too small.

4. What does the boy want to do?

A. Adopt a cat. B. Volunteer at an animal shelter. C. Donate some money.

5. How often should the fish be fed?

A. Once a day. B. Twice a day. C. Three times a day.

第二节（共10小题；每小题1.5分，满分15分）

听下面3段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项。每段对话或独白读两遍。

听第6段材料，回答第6、7题。

6. What are the speakers mainly talking about?

A. A TV program about sharks. B. A visit to the beach. C. A book on sea animals.

7. What surprised the boy about sharks?

A. They are afraid of humans. B. They are important for the ocean. C. They are not as dangerous as people think.

听第7段材料，回答第8至10题。

8. Where does the conversation probably take place?

A. In a library. B. In a classroom. C. At home.

9. What is the main reason for bees disappearing according to the girl?

A. Climate change. B. Use of pesticides. C. Loss of flowers.

10. What does the boy suggest people do?

A. Buy more honey. B. Plant more flowers. C. Keep bees as pets.

听第8段材料，回答第11至15题。

11. Which animal can sleep with one half of its brain at a time?

A. Dolphins. B. Giraffes. C. Penguins.

12. How long can a camel go without drinking water?

A. For several days. B. For several weeks. C. For several months.

13. Why do flamingos stand on one leg?

A. To keep warm. B. To save energy. C. To attract a mate.

14. What is special about a chameleon's eyes?

A. They can see in the dark. B. They can move independently. C. They can see very far.

15. What is the speaker's purpose?

A. To encourage people to protect animals. B. To share interesting facts about animals. C. To explain how animals survive in the wild.

第二部分 阅读理解（共20小题；每小题2分，满分40分）

第一节（共15小题；每小题2分，满分30分）

阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。

A

Have you ever heard of an animal that can change its color? The octopus is a master of this skill. It doesn't just change color to hide from enemies. An octopus can also change the pattern and even the texture of its skin to look like rocks, sand, or seaweed. This amazing ability is thanks to special cells in its skin called chromatophores. These cells can expand or shrink very quickly to show different colors. Scientists believe octopuses might even use color changes to "talk" to each other or show their feelings. For example, a dark red color could mean the octopus is angry, while a pale color might mean it's scared.

16. What is the main topic of the passage?

A. The food octopuses eat. B. The enemies of octopuses. C. The color-changing ability of octopuses. D. The size of different octopuses.

17. What are chromatophores?

A. Special cells in an octopus's skin. B. The enemies of octopuses. C. A kind of seaweed. D. Tools scientists use.

18. Why might an octopus turn pale according to the passage?

A. To look for food. B. To show it is scared. C. To talk to a friend. D. To attract a mate.

19. What does the word “texture” in Paragraph 1 probably mean?

A. Color. B. Smell. C. Feel or appearance. D. Sound.

B

Dear Editor,

I am writing to complain about the serious litter problem in Green Lake Park. Last Sunday, my family went there for a picnic. To our surprise, we saw plastic bags, bottles, and food wrappers everywhere. The beautiful lake was polluted, and the grass was covered with rubbish. What's worse, some people were still throwing trash on the ground even though there were bins nearby.

This is not just ugly; it's dangerous. Animals might eat the plastic and get sick. The rubbish can also pollute the water and soil. Our park is a treasure for everyone in the city. We must keep it clean.

I suggest the park management put up more signs to remind people and have more workers to clean up regularly. Also, people who litter should be fined. Let's work together to protect our environment.

Sincerely,

A concerned citizen,

Li Hua

20. Why did Li Hua write this letter?

A. To invite people to Green Lake Park. B. To complain about the litter problem. C. To describe a beautiful picnic. D. To thank the park workers.

21. What did Li Hua NOT see in the park?

A. Plastic bags. B. Clean benches. C. Food wrappers. D. Bottles.

22. What is one danger of litter mentioned in the letter?

A. It makes the park too crowded. B. Animals might eat it and get sick. C. It stops people from having picnics. D. It makes the flowers die.

23. What suggestion does Li Hua give?

A. To close the park on weekends. B. To fine people who litter. C. To stop selling food in the park. D. To build more bins in the lake.

C

Many people think that keeping a pet is just for fun, but studies show it has real benefits for our health. First, pets, especially dogs, encourage us to exercise. Walking a dog means you get regular physical activity. Second, pets can help reduce stress and anxiety. Simply petting a cat or dog can lower your blood pressure and make you feel calm. Third, pets provide companionship. For people who live alone, a pet can be a great friend and reduce feelings of loneliness. Finally, children who grow up with pets often develop stronger immune systems and learn responsibility by taking care of them. So, next time you see a cute puppy, remember it might be good for your health too!

24. What is the main idea of the passage?

A. How to choose the right pet. B. The costs of keeping a pet. C. The health benefits of having a pet. D. The history of pets and humans.

25. How do pets help people get more exercise?

A. By playing games indoors. B. By needing to be walked. C. By eating a lot of food. D. By waking people up early.

26. What can petting a cat or dog do according to the passage?

A. Make you hungry. B. Lower your blood pressure. C. Help you sleep longer. D. Teach you responsibility.

27. Who might benefit most from the companionship of a pet?

A. People who travel a lot. B. People who live alone. C. People who are very busy. D. People who dislike animals.

D

The Earth is like a giant onion, made up of several layers. The top layer we live on is called the crust. It is made of solid rock and is very thin compared to the other layers—like the skin of an apple. Under the crust is the mantle. This layer is much thicker and is made of hot, soft rock that moves very slowly. The outer core is below the mantle. It is so hot that the metals there are liquid! Finally, at the very center of the Earth is the inner core. Even though it's the hottest place, the pressure is so great that the iron and nickel are squeezed into a solid ball. Scientists study these layers by listening to earthquake waves that travel through the Earth.

28. Why is the Earth compared to an onion?

A. It makes people cry. B. It has many layers. C. It is round and brown. D. It grows in the ground.

29. Which layer of the Earth do we live on?

A. The mantle. B. The crust. C. The outer core. D. The inner core.

30. What is the mantle made of?

A. Liquid metal. B. Solid iron and nickel. C. Hot, soft rock. D. Cold, hard rock.

31. Why is the inner core solid?

A. Because it is very cold. B. Because the pressure is very high. C. Because it is made of water. D. Because it is close to the sun.

第二节（共5小题；每小题2分，满分10分）

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Polar bears are amazing animals that live in the Arctic. ___32___ Their thick fur and a layer of fat under their skin keep them warm in freezing temperatures. Polar bears are excellent swimmers. They use their large front paws to paddle and can swim for long distances to find food or move between pieces of ice. ___33___ They mainly eat seals. A polar bear waits patiently by a hole in the ice for a seal to come up for air. ___34___

However, polar bears are facing a big problem: climate change. The Arctic ice is melting. ___35___ This means they have to swim farther and have less time to hunt for seals. Many polar bears are becoming thinner and having fewer babies. Scientists say we need to take action to protect their home.

A. This makes it harder for polar bears to find food.

B. They are the largest land meat-eaters in the world.

C. They can run very fast on the ice.

D. Then it catches the seal with its sharp claws and teeth.

E. Their favorite food is fish.

F. They are well-adapted to the cold environment.

G. Some people hunt polar bears for their fur.

第三部分 语言运用（共40小题；每小题1分，满分40分）

第一节（共15小题；每小题1分，满分15分）

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

Last summer, my family and I visited a wildlife rescue center. I was both excited and a little nervous. We saw many animals there, but one story touched my heart deeply. It was about a young fox ___36___ we named Rusty.

Rusty was found alone near a road, weak and scared. Someone ___37___ him and brought him to the center. The vet said he was too young to survive on his ___38___ . The workers at the center decided to take care of him. At first, Rusty was very shy. He would hide in the corner of his enclosure (围场) and ___39___ come out even for food. But the keepers were very patient. They ___40___ to him softly and left food for him every day.

Slowly, Rusty began to ___41___ them. After a few weeks, he would come out when he heard their voices. It was amazing to see the ___42___ between Rusty and the people who saved him. They taught him how to find food and be careful of dangers. The ___43___ was to prepare him to return to the wild.

Finally, the day came. We watched as the keepers took Rusty to a forest. They opened the carrier, and after a moment of hesitation, Rusty ran out into the trees. He stopped once, looked back at us, and then ___44___ . I felt a mix of sadness and joy. We would miss him, but we knew he was ___45___ he belonged. This experience made me understand the importance of protecting wildlife and their homes.

36. A. which B. who C. whom D. what

37. A. saved B. bought C. caught D. left

38. A. self B. own C. way D. mind

39. A. always B. often C. never D. sometimes

40. A. shouted B. talked C. sang D. laughed

41. A. trust B. thank C. forget D. follow

42. A. fight B. difference C. distance D. trust

43. A. goal B. rule C. problem D. question

44. A. disappeared B. slept C. cried D. played

45. A. when B. where C. why D. how

第二节（共15小题；每小题1分，满分15分）

根据句意及所给汉语或首字母提示，写出单词的正确形式，每空一词。

第三节（共10小题；每小题1分，满分10分）

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Plants are essential for life on Earth. They provide us with oxygen to breathe and food ___61___ (eat). Without plants, humans and animals could not survive. ___62___ (scientist) are always discovering new ways that plants help us.

For example, some plants can clean the air ___63___ taking in harmful gases. Others have special chemicals that can be used ___64___ (make) medicine. In fact, many of our modern medicines come from plants.

Plants also play a key role in ___65___ (keep) the soil healthy. Their roots hold the soil together, which prevents erosion (侵蚀). When leaves fall and decompose, they make the soil richer.

___66___ (sad), many plant species are disappearing because of human activities like cutting down forests. We must take action now ___67___ (protect) them. ___68___ you can do is to plant a tree or some flowers. Remember, every small action ___69___ (count). Let's work together ___70___ (create) a greener world for all.

第四部分 书面表达（共1小题；满分20分）

76. 植物对人类、动物以及周围环境都非常重要。请你根据以下思维导图的提示，以"The Importance of Plants"为题从三个方面谈论一下植物的重要性，呼吁大家爱护花草树木。

思维导图提示：

For humans: provide food, oxygen, medicine, wood...

For animals: offer food and shelter (栖息地)...

For the environment: clean the air, keep soil and water healthy, make the world beautiful...

要求：

1. 包含思维导图中的要点，可适当发挥；

2. 语句通顺，意思连贯，书写工整；

3. 词数80左右；

4. 文中不得出现你的任何真实信息（姓名、校名和地名等）。

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参考答案

第一部分 听力理解

1-5: BACBA

6-10: ABCBB

11-15: ABBBB

第二部分 阅读理解

16-19: CABC

20-23: BBAB

24-27: CBBB

28-31: BBCB

32-35: FBDA

第三部分 语言运用

第一节 完形填空

36-40: BABCB

41-45: ADBAB

第二节 词汇运用

46. environment 47. forest 48. nose 49. throw/litter 50. symbol

51. fresh 52. lose 53. save 54. explained 55. prefer

56. law 57. touching 58. happily 59. suggestion/advice 60. pollution

第三节 语法填空

61. to eat 62. Scientists 63. by 64. to make 65. keeping

66. Sadly 67. to protect 68. What 69. counts 70. to create

第四部分 书面表达

76. One possible version:

The Importance of Plants

Plants are very important to us all. First, they are necessary for humans. They provide us with food like fruits and vegetables, oxygen to breathe, and even medicine to make us healthy. Wood from trees is used to build houses and make paper.

Second, plants are important for animals. Many animals eat plants as their main food. Trees and bushes also offer shelter and safe places for animals to live and raise their young.

Finally, plants play a key role in the environment. They help clean the air by taking in carbon dioxide. Their roots hold the soil and prevent erosion. They also help keep water clean and make our world beautiful.

In short, plants are essential for life on Earth. Let's promise to protect plants and not harm them.

听力原文

第一节

1. W: I want to go to the zoo this Saturday. What time does it open?

M: Let me check. On weekdays, it opens at 8:30, but on weekends, it opens half an hour later.

2. W: Did you enjoy your holiday?

M: Yes! The best part was the dolphin show at the city aquarium. It was amazing!

3. M: The elephants in this zoo look sad.

W: I know. Their space is so small. They need a much larger area to walk around.

4. M: Mom, I saw a poster. The animal shelter needs volunteers to walk dogs and play with cats.

W: That sounds like a great idea. You love animals.

5. W: How often should I feed my new goldfish?

M: Just a little bit of food once a day is enough. Feeding them too much is bad for them.

第二节

Text 6

W: You look interested. What are you watching?

M: A documentary about sharks. It's really changing my mind about them.

W: Oh? I thought they were just dangerous.

M: Me too. But the program says they are actually very important for keeping the ocean healthy. They help control the number of other fish. And most sharks are not interested in humans at all.

W: That's surprising. I guess we should protect them too.

Text 7

M: What are you reading for your science project?

W: It's about bees. Did you know they are disappearing in many places?

M: Really? Why is that?

W: There are many reasons, but scientists think one main reason is the use of pesticides on farms. These chemicals can kill bees or make them weak.

M: That's terrible. Bees are so important for pollinating flowers and crops.

W: Exactly. Without bees, we would have much less food. The book suggests that people can help by planting more flowers that bees like in their gardens.

M: Maybe we should start a garden at school.

Text 8

 Hello, everyone. Today, let's learn some amazing facts about animals. First, dolphins are interesting sleepers. They can sleep with one half of their brain at a time. This allows them to keep swimming and come up to breathe. Next, camels are famous for surviving in deserts. They can go for several weeks without drinking water! How about flamingos? They often stand on one leg. Scientists believe this helps them save body heat. Another cool animal is the chameleon. Its eyes can move independently, so it can look in two different directions at the same time! The animal world is full of wonders. Learning about them helps us understand how special each creature is and why we should protect them all.