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Unit 4 Amazing Plants and Animals 单元练习题
(满分：100 分 时间：90 分钟）
一、词汇考查，从 A、B、C、D 四个选项中选出最恰当的一项。（10分）
1. The cheetah is known as the ______ land animal in the world.
A. fast B. faster C. fastest D. fastest
2. Bamboo is a ______ plant in Chinese culture, symbolizing goodness and strength.
A. popular B. popularly C. popularity D. popularize
3. The redwood tree can ______ up to 100 meters tall, making it one of the tallest trees.
A. reach B. touch C. appear D. weigh
4. We should ______ the environment to protect the home of many animals.
A. connect B. protect C. expect D. store
5. The ______ of the blue whale can reach up to 200 tons, making it the heaviest animal.
A. height B. weight C. length D. size
6. ______ the rainforest is home to thousands of plant and animal species.
A. Actually B. Suddenly C. Luckily D. Finally
7. The folding fan is a traditional Chinese ______ with beautiful paintings.
A. tool B. role C. symbol D. situation
8. Bees play a key ______ in pollination, helping plants grow.
A. part B. role C. game D. A and B
9. The ______ of the lotus flower in Chinese art represents purity and beauty.
A. goodness B. appearance C. importance D. connection
10. Without bees, about 80% of plants cannot grow, showing their ______ to the ecosystem.
A. disappointment B. importance C. situation D. touch
二、语法考查，从 A、B、C、D 四个选项中选出最佳答案。（10 分）
11. Ginkgo trees are one of ______ ancient trees in the world.
A. the most B. more C. most D. the more
12. ______ amazing the connection between plants and animals is!
A. What B. What an C. How D. How an
13. She ______ a folding fan when she visited Sichuan last year.
A. buys B. bought C. has bought D. will buy
14. If we don’t protect bees, their number ______ dropping.
A. will keep B. keeps C. kept D. has kept
15. The blue whale ______ in all oceans except the Arctic Ocean.
A. lives B. lived C. is living D. live
16. Bamboo can ______ used to make furniture and tools.
A. be B. being C. to be D. been
17. ______ you ever ______ the Bamboo Sea in Sichuan
A. Have; visited B. Do; visit
C. Did; visit D. Will; visit
18. The moss ______ in wet environments and is an important part of the ecosystem.
A. grows B. grow C. growing D. grew
19. I felt ______ when I heard that some species are becoming extinct.
A. disappoint B. disappointed
C. disappointing D. disappointment
20. ______ the help of bees, many plants can reproduce.
A. With B. Without C. For D. In
三、词汇填空，用括号内单词的正确形式填空。（共 10 分）
21. The ______ (appear) of the butterfly’s colorful wings attracts many photographers.
22. We should plant more trees to make our planet ______ (lively).
23. The ______ (connect) between humans and nature is very important.
24. Ginkgo trees are ______ (know) for their long life and beauty.
25. The ______ (weigh) of the elephant is about 5 tons.
26. Bamboo shoots are not only delicious but also full of ______ (good).
27. The cheetah can run at a ______ (surprise) speed of 110 km/h.
28. Many animals are losing their homes because of ______ (climate) change.
29. The ______ (protect) of wild animals is our responsibility.
30. I ______ (imagine) a world where all species live in harmony.
四、语法填空，阅读下面短文，在空白处填入一个适当的单词或括号内单词的正确形式。（共 10 分）
The ginkgo tree is one of the 31 (old) living plants on Earth. It 32 (appear) over 200 million years ago. In China, the ginkgo is a symbol of hope and long life. The 33 (large) ginkgo tree in Shanxi Province is over 1,400 years old. Its leaves turn bright yellow in autumn, 34 (attract) many tourists.
Bees play 35 important role in pollination. Without them, 80% of plants cannot grow. 36 (sad), their number is dropping because of pollution and habitat loss. We can help by 37 (plant) more flowers and avoiding pesticides.
The blue whale, 38 (weigh) up to 200 tons, is the 39 (heavy) animal on Earth. It lives in most oceans and helps maintain a 40 (health) ecosystem by providing food for other marine life.
五、阅读理解（共 10 小题，每小题 2 分，满分 20 分）
（一）阅读 A 篇（链接教材：蜜蜂的重要性）
Bees are small but mighty creatures. They are the most important pollinators, helping over 80% of plants grow. Without bees, we would lose many fruits, vegetables, and flowers. Bees communicate by dancing to tell others where food is. Their honeycombs are not only homes but also amazing structures. However, bee populations are falling due to climate change and pesticide use. Scientists urge us to plant bee-friendly gardens and protect their habitats.
What is the main role of bees
A. Providing honey B. Pollinating plants
C. Building homes D. Fighting climate change
42. How do bees tell others about food sources
A. By making sounds B. By dancing
C. By leaving smells D. By flying in circles
43. The word “pollinators” in the passage means ______.
A. 授粉者 B. 捕食者 C. 生产者 D. 消费者
44. Why are bee numbers dropping
A. They move to new habitats. B. Climate change and pesticides.
C. They have too much food. D. Humans keep too many bees.
45. What can we do to help bees
A. Cut down trees B. Use more pesticides
C. Plant flowers D. Keep bees as pets
（二）阅读 B 篇（拓展：北极熊与生态保护）
Polar bears are facing a critical situation due to melting Arctic ice. These amazing animals rely on sea ice to hunt seals, their main food. As the climate warms, ice melts earlier, leaving bears with less time to eat. Polar bears are the largest land carnivores, weighing up to 600 kg. They play a key role in the Arctic ecosystem. Scientists warn that without urgent action, polar bears could disappear by 2100. Protecting their habitat is crucial for their survival and the balance of nature.
What is the biggest threat to polar bears
Lack of food B. Melting sea ice
C. Hunting D. Pollution
Polar bears mainly eat ______.
A. fish B. birds C. seals D. plants
48. The word “critical” in the passage means ______.
A. 安全的 B. 关键的 C. 普通的 D. 有趣的
49. Why are polar bears important to the Arctic
A. They control seal numbers. B. They melt the ice.
C. They provide food for other animals. D. They attract tourists.
50. What is the best title for the passage
A. The Life of Polar Bears B. Arctic Ice and Climate Change
C. Protect Polar Bears: A Global Task D. How Polar Bears Hunt
六、完型填空（共 10 小题，每小题 2 分，满分 20 分）
The world of plants and animals is full of amazing connections. Take the bamboo forest, for example. Bamboo is one of the 51 growing plants, reaching 30 cm a day. It provides food and shelter for pandas, which are 52 by people worldwide. Pandas, in turn, help spread bamboo seeds, 53 a mutual relationship.
In the ocean, the blue whale 54 a vital role. As the largest animal, it feeds on tiny shrimp-like creatures, keeping the ecosystem balanced. When a whale dies, its body becomes food for other sea life, 55 thousands of organisms.
These examples show how all living things are 56 . We must protect these relationships. Every species, 57 or large, has a role to play. By 58 about them, we can appreciate nature’s wonders and take action to 59 our planet healthy. Let’s cherish the amazing plants and animals that 60 our world.
A. fast B. faster C. fastest D. fastly
A. love B. loved C. loving D. loves
A. create B. creates C. creating D. created
A. plays B. played C. playing D. play
A. support B. supports C. supporting D. supported
A. connected B. connecting C. connect D. connects
A. small B. smaller C. smallest D. the smallest
A. learn B. learning C. to learn D. learns
A. keeps B. kept C. keep D. keeping
A. share B. shares C. shared D. sharing
七、书面表达（满分 20 分）
请以 “The Most Amazing Animal/Plant I Know” 为题，写一篇短文。
要求：
描述一种你认为神奇的动植物（如竹子、猎豹、蜜蜂等）；
运用本单元词汇（如 amazing, connect, protect, role, ecosystem 等）；
词数 60-80 词，逻辑清晰，语法正确。
答案与解析
一、词汇选择题
1. C 最高级 “the fastest” 表示 “最快的”。
2. A 形容词 “popular” 修饰名词 “plant”。
3. A reach “达到”，符合 “达到 100 米高” 的语境。
4. B protect “保护”，与 “环境” 搭配。
5. B weight “重量”，符合 “蓝鲸的体重”。
6. A Actually “实际上”，引出事实。
7. C symbol “象征”，折扇是传统象征。
8. D play a part/role in“在…… 中起作用”，两者均可。
9. B appearance “外观”，莲花的外观象征纯洁。
10. B importance “重要性”，蜜蜂对生态系统的重要性。
二、语法选择
11. A “one of the + 最高级” 结构。
12. C How 引导感叹句，修饰形容词 “amazing”。
13. B 一般过去时，last year 为标志。
14. A if 引导的条件句，主句用将来时。
15. A 一般现在时，描述事实。
16. A 被动语态 “can be used”。
17. A 现在完成时，强调经历。
18. A 一般现在时，主语 moss 为单数。
19. B 形容词 “disappointed” 修饰人。
20. A With the help of“在…… 帮助下”。
三、词汇填空
21. appearance（名词，外观）
22. lively（形容词，生机勃勃的）
23. connection（名词，联系）
24. known（过去分词，be known for 以…… 闻名）
25. weight（名词，重量）
26. goodness（名词，营养）
27. surprising（形容词，令人惊讶的）
28. climate（名词，气候）
29. protection（名词，保护）
30. imagine（动词，想象）
四、语法填空
31. oldest（最高级，最古老的）
32. appeared（一般过去时）
33. largest（最高级，最大的）
34. attracting（现在分词，表结果）
35. an（不定冠词，important 以元音开头）
36. Sadly（副词，不幸地）
37. planting（动名词，作宾语）
38. weighing（现在分词，作定语）
39. heaviest（最高级，最重的）
40. healthy（形容词，健康的）
五、阅读理解
（一）阅读 A 篇
41. B 细节题，蜜蜂的主要作用是授粉。
42. B 细节题，蜜蜂通过跳舞交流。
43. A 词义题，pollinators 意为 “授粉者”。
44. B 细节题，气候变化和农药使用导致蜜蜂数量下降。
45. C 细节题，种植花卉帮助蜜蜂。
（二）阅读 B 篇
46. B 细节题，海冰融化是主要威胁。
47. C 细节题，北极熊主要吃海豹。
48. B 词义题，critical 意为 “关键的”。
49. A 推断题，北极熊控制海豹数量，维持生态平衡。
50. C 主旨题，文章呼吁保护北极熊。
六、完型填空
51. C 最高级 “the fastest”。
52. B 被动语态 “are loved”。
53. C 现在分词作状语。
54. A 一般现在时，主语第三人称单数。
55. C 现在分词作状语。
56. A 被动语态 “are connected”。
57. A 形容词原级，与 large 并列。
58. B 动名词作宾语。
59. C 不定式 “to keep” 表目的。
60. A 一般现在时，主语复数。
七、书面表达（参考范文）
The Most Amazing Plant I Know（植物篇）
Bamboo is the most amazing plant I know. It grows incredibly fast, some species even 1 meter a day! It’s not only beautiful but also useful—people use it to build houses, make tools, and even eat bamboo shoots. Bamboo forests are home to pandas, connecting animals and humans. It symbolizes goodness in Chinese culture. We should protect bamboo and its ecosystem, as it plays a vital role in maintaining nature’s balance. Let’s cherish this amazing plant!
The Amazing Panda（动物篇）
The panda is one of the most beloved animals in the world and a symbol of China. With its black-and-white fur and round face, it looks incredibly cute. Pandas mainly live in the bamboo forests of Sichuan, where they depend on bamboo for over 99% of their diet. Bamboo plays a vital role in their life, and the loss of bamboo forests has made pandas one of the most endangered animals.
Pandas are not only loved for their appearance but also for their important role in the ecosystem. They help spread bamboo seeds, connecting plant and animal life. Sadly, only about 2,000 pandas remain in the wild, so protecting their habitat is crucial.
Let’s work together to protect these amazing creatures and the forests they call home. Every effort counts in keeping pandas and their ecosystem healthy!

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