Unit 4 Amazing Plants and Animals 单元检测 2025-2026学年人教版八年级英语上册

人教版八上英语Unit 4Amazing Plants and Animals 单元检测题 满分:100 分 考试时间:90 分钟 一、单项选择题(每题 1 分,共 15 分) 从 A、B、C 三个选项中,选出可以填入空白处的最佳选项。 () 1. Mangroves (红树林) are one of _ coastal plants—they can live in saltwater and protect the shore from storms. A. special B. more special C. the most special () 2. —Have you ever seen _ Venus flytrap (捕蝇草)? It can catch small insects with its leaves! —No, but I read about it in our biology book. A. a B. an C. the () 3. The sloth (树懒) is _ land animal in the world. It moves so slowly that algae (藻类) can grow on its fur. A. slow B. slower C. the slowest () 4. The giant sequoia (巨杉) _ for being one of the tallest trees on earth—some are over 80 meters high. A. is famous B. famous C. more famous ( )5. The leaves of the ginkgo tree turn green _ spring and yellow in autumn. It’s a beautiful seasonal change. A. in B. on C. at ( )6. The Amazon Rainforest has _ number of animal species. Over half of the world’s land animals live there. A. large B. larger C. the largest () 7. Cacti (仙人掌) _ survive in dry deserts because their thick stems can store lots of water for a long time. A. can B. must C. should () 8. The blue-footed booby (蓝脚鲣鸟) is one of _ birds. Its bright blue feet and funny dance always make people laugh. A. funny B. funnier C. the funniest ( )9. Scientists want to know _ plant can absorb the most carbon dioxide to fight global warming. A. which B. what C. who ( )10. In China, the giant panda is one of _ animals. It’s even a symbol of friendship between China and other countries. A. popular B. more popular C. the most popular () 11. Monkeys are good _ jumping from one branch to another in the banyan tree (榕树)—their long arms help them a lot. A. in B. at C. for () 12. Dragon fruit (火龙果) is one of _ tropical fruits. It has sweet flesh and tiny black seeds that are edible (可食用的). A. sweet B. sweeter C. the sweetest () 13. Every day, bees _ nectar (花蜜) from flowers to make honey. This work also helps plants produce seeds. A. collect B. collects C. collected () 14. The Gal pagos giant tortoise (加拉帕戈斯象龟) is _ reptile (爬行动物). Some live for over 150 years! A. long-lived B. more long-lived C. the most long-lived () 15. Wetlands (湿地) play _ role in protecting water birds. They provide safe homes and enough food for the birds. A. important B. more important C. the most important 二、词形变换(每题 2 分,共 20 分) 根据句意及提示,用单词的正确形式填空。 The banyan tree (榕树) has one of the 16._ (wide) crowns (树冠) among all trees. Its branches can cover a whole park! The cheetah is the17. _ (fast) land animal. It can run up to 120 kilometers per hour to catch its prey (猎物). Bamboo is one of the18. _ (useful) plants in daily life. People use it to make chopsticks, baskets and even musical instruments. This documentary about the Arctic is the19. _ (interesting) one I’ve watched. It shows how polar bears hunt on ice. We should understand the20. _ (important) of protecting mangroves—they keep our coasts safe from storms. Some desert plants have 21._ (thick) skins than others to reduce water loss in hot weather. Pandas’22. _ (favourite) food is bamboo. They spend 10-12 hours a day eating it! The prickly pear cactus (仙人掌梨) is one of the 23._ (tall) cacti. It can grow up to 10 meters high in the desert. Butterflies 24._ (lay) their eggs on specific plants so that their caterpillars (毛毛虫) have food to eat after hatching. The African elephant has 25._ (big) ears among all elephant species. The ears help it cool down in hot African summers. 三、阅读理解(每题 2 分,共 20 分) 阅读下列两篇短文,从每小题所给的 A、B、C 三个选项中,选出最佳选项。 A The Venus Flytrap: Nature’s “Insect Trap” The Venus flytrap is one of the most amazing plants in the world. It doesn’t just get food from sunlight and soil—unlike most plants, it eats insects! This special ability helps it survive in places where the soil is poor in nutrients (营养). What makes the Venus flytrap so unique? Its leaves look like small traps. Each leaf has two parts, and on the edges, there are tiny “hairs”. When an insect touches these hairs twice in 20 seconds, the leaf closes quickly—like a trap shutting! The insect can’t escape, and the leaf slowly digests (消化) it over 5-12 days. But the Venus flytrap is not “greedy”. It only closes its leaves when it’s sure there’s an insect—this saves energy. Also, it doesn’t eat every insect; it prefers small ones like flies and ants. Sadly, the Venus flytrap is now in danger. People collect it from the wild to sell, and its natural habitats are being destroyed. We need to protect this amazing plant before it’s too late. ( )26. Why does the Venus flytrap eat insects? A. Because it doesn’t like sunlight B. Because the soil it grows in is poor in nutrients C. Because insects are its only food ( )27. How does the Venus flytrap know there’s an insect? A. It smells the insect B. Its leaves have tiny hairs that sense the insect C. It hears the insect’s sound ( )28. How long does it take the Venus flytrap to digest an insect? A. 5-12 days B. 20 seconds C. One day ( )29. What danger does the Venus flytrap face? A. It can’t find enough insects to eat B. People collect it and destroy its habitats C. It can’t stand hot weather ( )30. What can we learn from the passage? A. The Venus flytrap is a greedy plant B. The Venus flytrap has a smart way to catch insects C. The Venus flytrap grows well in any soil B The Red Panda: Asia’s “Cute Tree Climber” The red panda is one of the most lovely animals in Asia. It’s not a bear—even though it has “panda” in its name! It’s about the size of a cat, with reddish-brown fur, a long bushy tail, and white markings on its face. Its tail is very useful: it helps the red panda keep balance when climbing trees and keeps it warm in cold weather. Red pandas live in the mountain forests of China, Nepal and Bhutan. They are mainly active at night (nocturnal) and spend most of their time in trees. Their favourite food is bamboo, but they also eat fruits, nuts and eggs. Like giant pandas, red pandas have a special “thumb” (a modified wrist bone) that helps them hold bamboo stems easily. But red pandas are in trouble. Their habitats are being cut down for farms and roads, and they are hunted for their beautiful fur. Now, there are only about 10,000 red pandas left in the wild. Many countries are working together to protect them—for example, building nature reserves where red pandas can live safely. ( )31. What does the red panda look like? A. It’s as big as a bear B. It has reddish-brown fur and a long bushy tail C. It has no white markings on its face ( )32. What is the red panda’s tail used for? A. Holding bamboo stems B. Keeping balance and staying warm C. Digging for food ( )33. Where do red pandas live? A. In mountain forests of Asia B. In deserts of Africa C. In rainforests of South America ( )34. Why are red pandas in danger? A. They can’t find enough bamboo B. Their habitats are destroyed and they are hunted C. They are attacked by other animals ( )35. How do countries protect red pandas? A. By collecting them from the wild B. By building nature reserves C. By feeding them in zoos 四、语法填空(每题 2 分,共 20 分) 阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空。 The world is full of amazing plants and animals, and each has its own special features. One of 36._ (amazing) animals is the chameleon (变色龙). It can change the color of its skin to match its surroundings—this helps it hide from predators (捕食者) and catch prey. It also has the 37._ (long) tongue among reptiles: its tongue can be twice as long as its body! Among plants, the baobab tree (猴面包树) is one of 38. _ (unique) trees. It grows in Africa and has a very thick trunk that stores water. During dry seasons, animals and humans can get water from its trunk. Some baobab trees are over 1,000 years old—they are the 39. _ (old) trees in Africa. Another amazing animal is the Arctic fox. It has the 40._ (thick) fur among small foxes. In winter, its fur turns white to blend in with the snow; in summer, it turns brown to match the ground. This helps it hunt for food like lemmings (旅鼠) all year round. These plants and animals show us how wonderful nature is. They are the 41._ (precious) gifts from our planet, and we must do our best to protect them. 五、补全对话(每题 2 分,共 10 分) 根据对话内容,从方框中选出适当的选项补全对话(选项中有两项多余)。 A: Hi, Sarah! Our teacher asked us to write a report about an amazing animal. Have you decided which one to write about? B: Yes! I want to write about the African elephant. It’s such an interesting animal. A: 42. _ B: Because it’s the largest land animal, and it’s also very smart. It can remember places with water for years. A: That’s true! 43. _ B: It eats about 150 kilograms of plants every day—grass, leaves and fruit. It drinks a lot of water too. A: 44. _ B: They live in groups led by an old female elephant. The group takes care of baby elephants together. A:45. _ B: Sadly, they are in danger. People hunt them for their tusks, and their habitats are being destroyed. A: That’s terrible! 46. _ B: We can support organizations that protect elephants and tell others not to buy products made from ivory (象牙). A. Why do you choose the African elephant? B. What do African elephants eat? C. How do African elephants live? D. What danger do African elephants face? E. Where do African elephants live? F. How can we protect them? G. Do you like African elephants? 七、书面表达(25 分) 假设你是李华,你参加了学校组织的 “神奇动植物探索营”,你的外国笔友 Peter 想知道你在营期中认识的最神奇的一种动植物。请你给他回一封邮件,介绍这种动植物的外形、生活习性,并说明它 “神奇” 的原因(需使用形容词最高级)。 要求: 词数不少于 80 词; 语句通顺,语法正确,内容完整; 文中不得出现真实姓名和学校名称。 参考答案 一、单项选择题 1-5. CACAA 6-10. CACAC 11-15. BCACB 二、词形变换 16.widest 17. fastest 18. most useful 19. most interesting 20. importance 21. thicker 22. favourite23. tallest 24. lay 25. the biggest 三、阅读理解 26-30. BBABB 31-35. BBABB 四、语法填空 36.the most amazing 37. longest 38. the most unique 39. oldest 40. thickest 41.most precious 五、补全对话 46-50. ABCDF 六、书面表达范文 Dear Peter, I’m excited to tell you about my experience in the “Amazing Plants and Animals Camp” last week! The most amazing thing I met there was a red panda—it’s now my favourite animal. The red panda is not big, about the size of a cat. It has the most lovely reddish-brown fur and a long bushy tail with white rings. Its tail is not just for show: it helps the red panda keep balance when climbing trees and keeps it warm on cold nights. What makes it really amazing? It’s mainly active at night and can climb trees as skillfully as a monkey. Its favourite food is bamboo, but it also eats sweet fruits. I was lucky to see it hold a bamboo stem with its little “thumb” (a special wrist bone)—it looked so cute! Now I know red pandas are in danger, so I’ll tell my friends to protect them. Do you have any amazing animals in your country? Please share with me! Yours, Li Hua 1 学科网(北京)股份有限公司 $$