2025年人教版英语八年级下册Unit 7 What's the highest mountain in the world? 单元练习题（含答案）

2025年人教版英语八年级下册Unit7单元练习题
一、首字母提示填空（10分）
Mount Qomolangma is the h________ mountain in the world.
The Nile River is the l________ river on Earth.
The Mariana Trench is the deepest p________ in the ocean.
Climbing mountains requires great c________ and preparation.
The Himalayas s________ across five countries.
The Sahara Desert is the largest h________ desert in the world.
Some animals can survive in e________ environments like Antarctica.
The climbers used special e________ to reach the summit.
Global warming is causing glaciers to m________ faster.
The Great Barrier Reef is a natural w________ in Australia.
二、用括号内所给单词的适当形式填空（10分）
The ________ (high) of Mount Qomolangma is 8,848.86 meters.
The explorers faced many ________ (danger) during their journey.
The Pacific Ocean is much ________ (wide) than the Atlantic.
The team ________ (success) reached the summit yesterday.
Protecting ________ (nature) resources is everyone’s duty.
She is one of the most ________ (experience) climbers in the world.
The temperature dropped ________ (sharp) at night.
The documentary about mountains is ________ (amaze).
They decided ________ (cancel) the trip due to bad weather.
The ________ (deep) part of the ocean is nearly 11,000 meters.
三、完形填空（20分）
Mount Qomolangma, the highest mountain in the world, attracts thousands of climbers every year. However, climbing it is not easy. It requires both physical and mental 1.
Last year, a team of climbers from China 2 to challenge the mountain. They trained for months and prepared enough supplies. During their climb, they faced strong winds and 3 oxygen levels. At one point, they even lost 4 with their base camp. But they never gave up.
After weeks of effort, they finally 5 the summit. The view from the top was 6. They took photos and left a flag as a 7. However, they also noticed a serious problem: trash left by previous climbers. This made them realize the importance of 8 the environment.
Back home, they started a campaign to 9 people to protect mountains. “We should respect nature 10 we want to enjoy its beauty,” they said.
A. strength B. money C. time D. luck
A. refused B. decided C. forgot D. avoided
A. high B. low C. normal D. stable
A. control B. contact C. patience D. hope
A. cleaned B. reached C. left D. measured
A. boring B. terrible C. breathtaking D. ordinary
A. symbol B. problem C. rule D. mistake
A. ignoring B. polluting C. protecting D. changing
A. warn B. encourage C. order D. punish
A. if B. unless C. because D. until
四、阅读理解（20分）
A
Venus (金星) is the second planet from the Sun.It is different from the earth in many ways.
Here are five ways we think Venus is different：
Volcanoes (火山)
There are more volcanoes on Venus than those on the earth.
There are more than 1，600 volcanoes on its surface (表面)，but there are possibly many more smaller ones that we can't see.Scientists believe that most of these are not active，though a few may still be active.
Longer day than year
A day on Venus lasts 243 earth days，while a year on Venus is shorter，at just 224.7 earth days.If that's just one day，think about what a work week would be like!
High temperatures and pressure
Temperatures on the surface can reach up to 470 degrees.
The air pressure on the surface of Venus is very high—about 90 times higher than the pressure on the earth.In other words，the pressure on Venus is about the same as the water pressure on the earth.
Russia sent a special machine to Venus.It took many photos of the land on Venus.But it did not stay long after landing because of the temperature and pressure.
A windy planet
Winds on Venus are strong and fast.They are faster than the fastest tornado (龙卷风) on the earth.Scientists say the winds on Venus blow so fast that they can drive clouds around the whole planet in four earth days.
( )1.Venus is the ________ planet from the Sun.
A．first B．second C．third D．fourth
( )2.Which of the following is TRUE
A．The earth has more volcanoes than those on Venus.
B．There are 1，600 volcanoes are active.
C．Most of the volcanoes on Venus are active.
D．Some of the volcanoes on Venus are very small.
( )3.A day on Venus is ________ earth days longer than a year on Venus.
A．14.2 B．15.5 C．16.8 D．18.3
( )4.Why can winds on Venus drive clouds around the planet
A．Because the winds are slow.
B．Because the temperatures are high.
C．Because the winds are very fast.
D．Because the temperatures are low.
( )5.What's the best title for the passage
A．Differences Between Venus and the Earth
B．Some Facts about the Earth
C．Some Different Planets
D．How Venus Appears
B
The Sahara Desert is the largest hot desert in the world. It is about 9 600 000 square kilometers in size. This is almost the size of the America or China. The desert covers eleven countries in the north of Africa.
The Nile runs through the Sahara Desert all year round. But there are also other rivers running through it seasonally (季节性地). The geography of the desert includes huge sand dunes (沙丘) and dune fields. Some of the sand dunes are 80 huge that they can even be over 152 meters high. But there are also other amazing landforms (地形) in different parts of the desert.
It is very hot and dry in the Sahara Desert. The temperature there is usually 30℃. However, during the hottest months, the temperature can go over 50℃. Because of the high temperatures and poor conditions of the desert, only a few plants live here, just about 500 kinds. They also play a role in the number of animals. In the driest part of the desert, there are only 70 different kinds of animals.
Today the Sahara’s population is around four million. They move from place to place through the desert. Because of this there are many different cultures and languages in this area.
( )6. From the first paragraph we can know that the Sahara Desert ________.
A. is the same as America in size B. is almost as big as China
C. is about 960 000 square kilometers in size
D. covers eleven countries in the south of Africa
( )7. What does the underlined word “They” refer to
A. High temperatures and poor conditions.
B. Some plants and animals.
C. Huge dunes and dune fields D. Languages and culture.
( )8. What can’t we know about the Sahara Desert
A. Its size. B. Its landforms. C. Its temperatures. D. Its future.
( )9. What can we learn from the passage
A. There is no water in the Sahara Desert.
B. Only the Nile goes through the desert.
C. There are only seventy different kinds of plants living there.
D. The Sahara area is rich in culture and language.
( )10. Where can we find the passage most probably
A. In a storybook. B. In a sports magazine.
C. In a geography book. D. In a health newspaper.
五、阅读还原（10分）
Climbing a mountain is not just about reaching the top. 1 You need to check the weather forecast and pack necessary gear like ropes, oxygen tanks, and warm clothes. 2 For example, climbing in winter is more dangerous due to snowstorms.
3 It teaches you to stay calm under pressure. Teamwork is also crucial. 4 If one member feels sick, the whole team might need to stop.
5 Always remember: safety comes first!
A. Preparation is the key to success.
B. Mountain climbing requires both skill and courage.
C. Seasons also affect climbing plans.
D. Climbers must trust and support each other.
E. Even small mistakes can lead to big risks.
六、语法填空（15分）
Mountains cover about 22% of the Earth’s surface. They are home to many plants and animals. However, climate change 1 (affect) mountain ecosystems seriously. Glaciers 2 (melt) faster than ever before. This causes rivers 3 (rise) and floods in some areas.
To protect mountains, we should reduce carbon emissions. Planting trees 4 (be) one effective way. Governments also need 5 (create) stricter laws. For example, in Nepal, climbers must bring back all trash. 6 they don’t, they will face fines.
7 (volunteer) to clean up mountains is another good idea. Last year, a group of students 8 (organize) a cleanup activity on Mount Tai. They collected over 100 bags of trash. “We hope 9 (inspire) more people to take action,” they said. Let’s work together 10 (protect) our planet!
1.________ 2.________ 3.________ 4.________ 5.________
6.________ 7.________ 8.________ 9.________ 10.________
七、书面表达（15分）
Should students learn about mountain climbing in school
上周，你班对此话题进行了讨论，结果如下：
| 同意 70% | 1. 学习户外生存技能
2. 培养团队合作精神
3. 增强环保意识 |
| 反对 30% | 1. 存在安全风险
2. 占用学习时间
3. 需要专业设备，费用高 |
| 你的观点 | …… |
请写一篇调查报告，不少于100词。
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参考答案
一、首字母填空
highest 2. longest 3. place 4. courage 5. stretches
hot 7. extreme 8. equipment 9. melt 10. wonder
二、适当形式填空
height 2. dangers 3. wider 4. successfully 5. natural
experienced 7. sharply 8. amazing 9. to cancel 10. deepest
三、完形填空
A 2. B 3. B 4. B 5. B 6. C 7. A 8. C 9. B 10. A
四、阅读理解
A: 1. C 2. B 3. B
B: 4. B 5. B
五、阅读还原
A 2. C 3. B 4. D 5. E
六、语法填空
is affecting 2. are melting 3. to rise 4. is 5. to create
If 7. Volunteering 8. organized 9. to inspire 10. to protect
七、书面表达（参考范文）
Last week, our class discussed whether students should learn about mountain climbing in school. 70% agreed. They think it teaches outdoor survival skills, teamwork, and environmental protection. However, 30% disagreed because of safety risks, time costs, and expensive equipment.
In my opinion, mountain climbing is valuable if taught safely. Schools can invite experts to guide students and use simulations to reduce risks. Learning about nature helps us appreciate and protect it better. Let’s embrace challenges responsibly!