Unit 4 The Wonders of Nature 单元检测题 2025-2026学年人教版八年级英语下册

人教版八年级英语下册 Unit 4 The Wonders of Nature 单元检测题 满分：100 分 考试时间：90 分钟 一、单项选择题（共 15 小题，每小题 1 分，满分 15 分） 从 A、B、C 三个选项中选出最佳答案。 1.Mount Qomolangma is ______ mountain in the world, with a height of 8,848.86 metres. A. higher B. the highest C. highest 2.The Dead Sea is about 416 metres ______ sea level, which makes it unique. A. below B. above C. under 3.This river is not ______ as the Yangtze River, but it's important for local people. A. long B. longer C. as long 4.The Sahara Desert covers about ______ square kilometres, making it the largest desert on Earth. A. 9,000,000 B. 900,000 C. 90,000 5.As we got closer to Angel Falls, the sound of water became ______ and ______. A. loud; loud B. louder; louder C. more loud; more loud 6.The Mariana Trench is ______ place in the ocean, reaching about 11,000 metres deep. A. deeper B. the deepest C. deepest 7.Traveling to natural wonders helps us understand ______ about the Earth's history. A. more B. much C. most 8.Lake Baikal is one of ______ freshwater lakes in the world, with clear water all year round. A. the most beautiful B. more beautiful C. beautiful 9.How ______ is the Yellow River? It's about 5,464 kilometres long. A. long B. far C. deep 10.The weather in the mountain is ______ than that in the city, so take warm clothes. A. colder B. coldest C. the coldest 11.______ visitors come to visit the Great Barrier Reef every year, about 2 million. A. Thousand of B. Thousands of C. Thousand 12.This natural park is becoming ______ popular with young travelers because of social media. A. more and more B. more and most C. most and most 13.Which is ______, the Nile River or the Yangtze River? A. long B. longer C. the longest 14.The ______ you learn about natural wonders, the more you want to protect them. A. much B. more C. most 15.There are ______ different kinds of plants in the Amazon Rainforest—over 40,000. A. hundred of B. hundreds of C. hundred 二、完形填空（共 10 小题，每小题 1.5 分，满分 15 分） 阅读下面短文，从 A、B、C 三个选项中选出最佳答案，使短文通顺、意思完整。 The Grand Canyon is one of the most amazing natural wonders in the world. It is located in Arizona, USA, and stretches about 446 kilometres long. The canyon was formed by the Colorado River over millions of years. Its rock layers tell the story of Earth's long history, with some rocks being about 2 billion years old. Every year, about 5 million visitors come to see its 16 ______ views. The canyon's colours change with sunlight—golden in the morning, deep red at midday, and orange in the evening. Many visitors walk along the trails or take a helicopter ride to enjoy the 17 ______ scenery. The South Rim is the most popular part because of its easy access and great views. The Grand Canyon is not just rocks. Many animals live there, such as bald eagles, mule deer, and bighorn sheep. The Colorado River has special fish like the humpback chub, which is 18 ______ . This shows how all parts of the environment are connected. To protect this natural wonder, park workers ask visitors to stay on paths and not to leave trash. Climate change and too many visitors are 19 ______ problems than before. Sustainable tourism is important to keep the canyon safe for future generations. Visiting the Grand Canyon is an unforgettable experience. It makes people realize the 20 ______ of nature and why we must protect it. Interestingly, the canyon's depth can reach over 21 ______ metres in some places, which makes it even more impressive. Visitors should follow the rules to make sure the canyon remains 22 ______ for everyone to enjoy. The Grand Canyon became a national park in 23 ______ , which helps protect it better through official management. Many people say it's 24 ______ to see the canyon at sunrise because the colours are the most wonderful during that time. Indeed, the Grand Canyon teaches us that natural wonders are 25 ______ than any man-made buildings, as they carry the history of our planet. 16.A. beautiful B. more beautiful C. most beautiful 17.A. amazing B. more amazing C. most amazing 18.A. endangered B. dangerous C. safe 19.A. big B. bigger C. biggest 20.A. power B. more power C. most power 21.A. 1,800 B. 180 C. 18,000 22.A. clean B. cleaner C. cleanest 23.A. 1919 B. 1991 C. 1819 24.A. good B. better C. best 25.A. precious B. more precious C. most precious 三、阅读理解（共 10 小题，每小题 2 分，满分 20 分） A Mount Qomolangma, the world's highest mountain, is located on the border between China and Nepal. Its official height is 8,848.86 metres, measured by Chinese surveyors in 2020. Climbing Qomolangma is a great challenge because of the harsh conditions—temperatures can drop to -30 degrees Celsius, and the air is very thin. The northern side of Qomolangma was once called the "Death Road" because it was so difficult to climb. However, Chinese climbing teams have made great achievements here. In 1960, the first Chinese team reached the top from the northern side. In 1975, another team brought a ladder to the Second Step, a dangerous part of the mountain, making it easier for future climbers. Why do people risk their lives to climb Qomolangma? For many, it's because of human curiosity and ambition. As the famous mountaineer George Mallory said, "Because it's there." Today, more and more people come to visit the base camp of Qomolangma, but it's important to protect the environment there. Tourists are asked to take their trash away to keep the mountain clean. 26.What is the official height of Mount Qomolangma? A. 8,848.86 metres B. 8,844.43 metres C. 8,850 metres 27.Why was the northern side of Qomolangma called the "Death Road"? A. Because it's too high B. Because climbing it is very difficult C. Because there are many wild animals 28.When did the first Chinese team reach the top of Qomolangma from the northern side? A. In 1975 B. In 1960 C. In 2020 29.What did the 1975 Chinese team bring to the Second Step? A. Food and water B. A ladder C. Medical supplies 30.What do tourists need to do to protect Qomolangma? A. Not climb the mountain B. Take their trash away C. Stay at the base camp only B Lake Baikal is a famous natural wonder in Siberia, Russia. It is the deepest freshwater lake in the world, with a maximum depth of 1,620 metres. The lake's surface covers 31,500 square kilometres, which is bigger than the country of Belgium. Lake Baikal is very cold for most of the year, but it is home to over 1,200 different types of animals. Many of these animals can only be found in Lake Baikal, such as the Baikal seal and the omul fish. The lake's water is so clear that you can see up to 40 metres deep in some places. For centuries, local people have depended on Lake Baikal for food and water. Today, it attracts thousands of tourists every year. Visitors can enjoy activities like hiking around the lake, fishing, and even diving in the cold water. However, the lake faces some problems, such as pollution from nearby factories and overfishing. To protect this natural treasure, the Russian government has set up protected areas around the lake. Scientists are also working to study the lake's ecosystem and find ways to keep it healthy. Lake Baikal is not just a lake—it's a symbol of nature's beauty and power. 31.Where is Lake Baikal located? A. In China B. In Russia C. In Canada 32.What is special about Lake Baikal's water? A. It's very cold B. It's very clear C. It's very salty 33.How many types of animals live in Lake Baikal? A. Over 1,200 B. Over 120 C. Over 12,000 34.What problem does Lake Baikal face? A. Too many tourists B. Pollution from factories C. Lack of water 35.What has the Russian government done to protect Lake Baikal? A. Built factories nearby B. Set up protected areas C. Stopped all fishing activities 四、短文选句填空（共 5 小题，每小题 2 分，满分 10 分） 阅读下面短文，从方框内所给的 A、B、C、D、E 五个选项中，选出能填入空白处的最佳选项，使短文意思完整、连贯。（有一项多余） A. It is also one of the longest rivers in Asia B. Many birds and animals make their homes in these wetlands C. It is famous for its rich biodiversity and beautiful scenery D. People have lived along the Yangtze River for thousands of years E. The Yangtze River Delta is one of the most developed areas in China The Yangtze River is one of China's greatest natural wonders. 36 ______ , stretching about 6,300 kilometres from west to east. It starts in the Tibetan Plateau and flows into the East China Sea. 37 ______ . They have depended on the river for water, transportation, and food. Today, the river still plays an important role in China's economy. 38 ______ , with many big cities and factories. The Yangtze River is not just important for people. 39 ______ . The Three Gorges Dam, built on the river, is the largest hydroelectric dam in the world. It provides clean energy for millions of people. However, we must protect the Yangtze River. Over the years, pollution and overfishing have harmed its ecosystem. Now, more and more people are working to keep the river clean and healthy. 40 ______ , and it will continue to be a treasure for China if we protect it well. 五、语法填空（共 10 小题，每小题 1 分，满分 10 分） 阅读下面短文，在空白处填入一个适当的单词或括号内单词的正确形式。 The Dead Sea is a unique natural wonder. It is located between Jordan and Israel. Unlike other seas, it is a salt lake with a very high salt content. This makes it impossible for most animals and plants 41 ______ (survive) in it, which is why it is called the "Dead Sea". The Dead Sea is the 42 ______ (low) place on Earth, about 416 metres below sea level. Its water is so salty that you can float easily on the surface without sinking. That's one of the 43 ______ (reason) why it attracts millions of visitors every year. The area around the Dead Sea has a dry climate, with little rain. The temperature there is usually 44 ______ (high) than in nearby areas. In summer, it can get as hot as 40 degrees Celsius. Many people come to the Dead Sea for its health benefits. The salt and minerals in the water are believed to help with skin problems. 45 ______ (tourist) often cover their bodies with mud from the lake, which is said to be good for the skin. However, the Dead Sea is facing a problem—its water level is dropping every year. This is because more and more water 46 ______ (take) from the rivers that feed it. If this continues, the Dead Sea might disappear in the future. To save this natural wonder, countries in the area are working together. They are trying to reduce the amount of water taken from the rivers. They are also encouraging 47 ______ (sustain) tourism. Visiting the Dead Sea is a memorable experience. It reminds us of the 48 ______ (beautiful) and fragility of nature. We must do our best to protect it so that future generations can also enjoy its 49 ______ (amaze) views and benefits. The Dead Sea is not just a lake—it's a symbol of nature's power. It teaches us that we must respect and protect the natural world. After all, natural wonders like the Dead Sea are 50 ______ (precious) than any man-made treasure. 六、补全对话（共 5 小题，每小题 2 分，满分 10 分） 根据下面的对话情景，在空白处填入适当的句子，使对话通顺、完整。 A: Hi, Li Ming! Have you ever been to any natural wonders? B: Yes, I went to the Zhangjiajie National Forest Park last year. It's amazing! A: 51. ______________________________________? B: It's in Hunan Province. It's famous for its unique sandstone pillars. A: 52. _________________________________? B: The tallest pillar is about 1,080 metres high. It's really impressive. A: 53. _________________________________? B: I went there with my family. We took many photos and enjoyed the fresh air. A: 54. __________________________________________? B: The best time to visit is spring. The weather is warm and the trees are green. A: Sounds great! I want to visit it too. 55. ________________? B: You can take a train to Zhangjiajie City first, then take a bus to the park. It's very convenient. A: Thank you for telling me so much! B: You're welcome. 七、书面表达（满分 15 分） 假设你是李华，你的英国笔友 Tom 对中国的自然奇观很感兴趣，他来信询问你最喜欢的中国自然奇观。请你根据以下提示给他写一封回信，介绍你最喜欢的自然奇观（如长江、黄河、珠穆朗玛峰、张家界等）。 提示： 1.你最喜欢的自然奇观是什么； 2.它的位置、特点（如长度、高度、大小等）； 3.它的重要性或意义； 4.我们应该如何保护它。 要求： 5.词数 80-100； 6.条理清晰，语句通顺，语法正确； 7.包含所有提示要点，可适当发挥。 参考答案 一、单项选择题（15 分） 1-5: BACAB 6-10: BAABA 11-15: BABBB 二、完形填空（15 分） 16-20: AAABA 21-25: AAABB 三、阅读理解（20 分） 26-30: ABBBB 31-35: BBABB 四、短文选句填空（10 分） 36-40: ADEBC 五、语法填空（10 分） 41.to survive 42. lowest 43. reasons 44. higher 45. Tourists 46.is taken 47. sustainable 48. beauty 49. amazing 50. more precious 六、补全对话（10 分，答案不唯一，合理即可） 51.Where is it located/Where is Zhangjiajie National Forest Park? 52.How high is the tallest pillar there? 53.Who did you go there with? 54.When is the best time to visit it? 55.How can I get there? 七、书面表达范文（15 分） Dear Tom, I'm glad to hear that you're interested in China's natural wonders. My favorite one is the Yangtze River, the longest river in China. It is located in eastern China, stretching about 6,300 kilometres. It starts from the Tibetan Plateau and flows into the East China Sea. The Yangtze River is very important for China. It provides water for millions of people and helps with transportation and energy production. However, the river faces some pollution problems. We should protect it by not throwing trash into it and reducing water waste. We should also plant more trees along its banks. I hope you can visit the Yangtze River someday. It's really a wonderful natural wonder! Yours, Li Hua 1 学科网（北京）股份有限公司 $