Unit 8 Preparing&Exploring基础练习题（含答案）-2024-2025学年仁爱科普版英语七年级下册

仁爱七下Unit 8 Preparing&Exploring能力提升
一、完形填空
阅读下面短文，从每题所给的 A、B、C、D 四个选项中选出最佳选项。
When it rains, water falls from clouds in the sky to the ground. How does the water get into the 1. ___ It is something called the water cycle.
There is always water in the air, but you can't always 2. __ it. It's called water vapor (蒸汽). The sun will make water hot in rivers, lakes and oceans. The water turns into water vapor. Then, it 3. ___ in the air.
High in the sky, it is 4. ___ at first. When water vapor gets cold, it becomes water again. You can see this happen (发生) 5. ___ you have a cold drink on a warm day. Water is on the 6. ___ of the glass. Does the glass leak (漏) No, water vapor in the air turns into water when it touches (接触) the cold glass.
Millions of water 7. ___ come together in the sky. They make clouds. Wind 8. ___ clouds. And the water vapor in clouds cools off and turns into water. Then the water 9. ___ to the ground.
Rainwater goes into the oceans, lakes and rivers. The sun turns it into water vapor. The water cycle 10. ___ all over again.
1. A. rivers B. trees C. grass D. sky
2. A. see B. feel C. look D. hear
3. A. uses up B. goes up C. cleans up D. puts up
4. A. warm B. cold C. small D. large
5. A. what B. why C. when D. where
6. A. top B. back C. inside D. outside
7. A. groups B. drops C. waste D. clouds
8. A. brings B. has C. moves D. forms
9. A. falls B. covers C. collects D. knocks
10. A. waits B. digs C. starts D. worries
二、短文填空
阅读下面短文，在空白处填入一个适当的单词或用括号内单词的正确形式填空。
Every day, we use a lot of water. We need water to drink, to cook and to wash our 1. ___ (hand). We use a lot of water 2. ___ (take) a shower, too. But many people in deserts can only take a shower 3. ___ (one) a week. We need to save water.
Luckily, the RainStick Shower can help us. It .4 ___ (save) about 80% of water. It 5. ___ (collect) and sterilizes (消毒) the water we used and then we can 6. ___ (use) it again.
With the help of this smart shower, every drop of water 7. ___ (go) onto our body six times. The inventor (发明者) says that a family can save a lot of water because 8. ___ this smart shower. It may make 9. ___ big difference to our life.
10. ___ fact, there are many other ways to save water. For example, when you wash dishes, don't keep the water 11. ___ (run). And only do some washing 12. ___ there are a lot of clothes to wash. Then turn off the tap while brushing your 13. ___ (tooth). So it is easy for us to do something for 14. ___ (we) earth.
There 15. ___ (be) a little water on the earth, so let's save water together.
三、阅读理解
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
From a plane we can see cities, mountains and oceans. The ocean looks very beautiful when the sun is shining (照耀) on it. But it can be very bad when there is a strong wind. The ocean covers about 70% of the earth.
In most parts of the ocean, there are many kinds of fishes and plants. Some live near the surface (表面) of the ocean. Others live deep down. Oceans are home to sea animals like sharks. There are also a lot of small living things, and lots of fish live by eating them.
The ocean is cold. Only a few people can go down into the deep ocean. It's important for us to understand the ocean because it may be full of useful things.
1. What covers about 70% of the earth
A. Mountains. B. The ocean. C. Cities. D. The land.
2. What can we know from the text
A. Oceans aren't home to some small living things.
B. People feel warm in the deep ocean.
C. The ocean looks beautiful when there is a wind.
D. We should know more about the ocean.
3. Where is the text probably (大概) from
A. A storybook. B. A movie poster. C. A science book. D. A history book.
B
On a hot summer day, you find the river dries up. Where does the water go It goes into the air! When the sun warms it, it goes up and becomes part of the air. But do you know how rain is formed
High in the sky, the air is cooler. As the water in the air cools, it turns into droplets (水滴). They get together to make clouds. In the clouds, many droplets get together and grow bigger. When they are heavy enough, they fall from the sky as rainwater. The water we have on the earth is always moving and changing (改变)!
Rain falls almost everywhere on the earth. One of the world's rainiest (最多雨的) places is Mount Waialeale of Hawaii. It rains about 350 days a year there. One of the driest places in the earth is the Atacama Desert in Chile. It never rains in some parts of this desert in hundreds of years.
4. Where does the water in the river go in hot summer
A. It goes into the air. B. It goes into the tap.
C. It goes into the ocean. D. It goes into the ground.
5. What can we know from Paragraph 2
A. The air in the sky is warm.
B. The clouds in the air can't move.
C. Droplets can make clouds.
D. There is no water in the sky.
6. What does the text mainly tell us
A. The importance of water.
B. How rain is formed.
C. Where the rainiest place in the world is.
D. Where the driest place in the world is.
C
The Amazon River is one of the world’s longest rivers, second only to the Nile River in Africa. Beginning from the Andes Mountains (安第斯山脉), the Amazon runs 4,000 miles through Colombia (哥伦比亚) and Brazil (巴西) to the Atlantic Ocean. The river is usually about one to six miles wide. During the rainy season, it can be as much as 20 miles wide in some places. It is also one of the deepest rivers, getting 300 feet deep in a number of places.
The river is also important because it runs through the Amazon Rainforest. Home to some of the planet’s unusual birds, fish and other animals, the Amazon Rainforest has the most plant and animal species in the world. There are brightly colored parrots, monkeys and frogs living here. ▲ Some of the plants and trees in the rainforest have been used as medicines (药) for thousands of years.
7. Which country does the Amazon River run through
A. South Africa. B. Russia. C. Brazil. D. China.
8. How wide is the river usually
A. About one to six miles wide. B. About ten miles wide.
C. About twenty miles. D. About three hundred miles wide.
9. Which of the following sentence can be put in ▲
A. It's really beautiful.
B. We can eat some of them.
C. It rains every morning.
D. In the water, you’ll find pink dolphins (海豚).
10. What can be the best title for the text
A. The Amazon River
B. The Amazon Rainforest
C. The Animals in the Amazon
D. The Story about the Amazon
D
You may think there is only sand (沙子) in the desert, but it is not the fact. In the desert, there is a little rain, and it is not enough for most plants. But we can see some plants live in the desert. There is water in some places in the desert. We call these places oases (绿洲). People grow different kinds of crops (庄稼) there.
People also live outside the oases. They have camels (骆驼), sheep and other animals. These animals depend on the desert plants for their food and do not need much water.
The animals are useful to the desert people in many ways. They eat meat and drink milk of the animals. They use the camels to carry things like water and food. What’s more, the camels can even help people find water.
The desert people have to keep moving from place to place. They must always look for desert plants for their animals. When there is no more food for their animals, they move to another place. The desert people are friendly. They would be ready to help the people in need and give them food and water.
11. How does the writer start the text
A. By telling a story. B. By telling a fact.
C. By asking a question. D. By giving examples.
12. What does the underlined phrase “depend on” mean in Chinese in Paragraph 3
A. 交换 B. 寻找 C. 蒸发 D. 依靠
13. What can we know about camels
A. They can’t carry water.
B. They don’t need much water.
C. They don’t eat desert plants.
D. They the water in the desert.
14. What’s the life of the desert people like
A. Interesting. B. Hard. C. Quiet. D. Exciting.
15. What is the text mainly about
A. The weather in the desert.
B. Oases and camels.
C. Oases and the desert people’s life.
D. The water in the desert.
四、情景交际
根据下面的对话情景，在空白处填入一个适当的句子，使对话的意思连贯、完整。
A: Hi, Jack. Where do you want to go this summer holiday
B: Hi, Lucy. I want to go to the Niagara Falls.
A: Oh, I know it's very beautiful. 1. ___
B: It’s 99 meters high.
A: 2. ___
B: It’s in North America.
A: 3. ___
B: I would like to go there with my parents.
A: 4. ___
B: Yes, I can take some photos. When I come back, I will show them to you.
A: 5. ___
五、书面表达
你们学校发起了 “节约用水，从现在做起”(Act Now to Save Water) 的征文活动。请你根据下表内容，写一篇作文。
浪费水的不良现象 (1)不关水龙头；(2)洗澡时间太长。
建议 (1)刷牙时关掉水龙头；(2)重复利用废水打扫卫生和浇花；(3)号召家人、朋友一起节约用水。
要求 (1)表格中的各点都必须在文中体现，可适当发挥；(2)70 词左右，开头已给出，不计入总词数；(3)文中不得出现真实的姓名、校名。
Act Now to Save Water
Water is very important to people. People can't live without water.
答案及解析部分
一、完形填空
1. 答案：A
解析：根据后文提到的水从天空落到地面，再结合水的循环相关知识，这里是说水进入河流，trees（树）、grass（草）、sky（天空）不符合语境，所以选 A。
2. 答案：A
解析：水蒸汽在空气中，我们不能总是“看到”它，feel（感觉）、look（看，强调动作）、hear（听到）都不合适，see 强调看到的结果，所以选 A。
3. 答案：B
解析：水变成水蒸汽后会在空气中“上升”，uses up（用完）、cleans up（打扫干净）、puts up（张贴；搭建）都不符合，goes up 表示上升，所以选 B。
4. 答案：B
解析：根据后文“When water vapor gets cold, it becomes water again.”可知，在高空中，一开始是“冷的”，warm（温暖的）、small（小的）、large（大的）不符合，所以选 B。
5. 答案：C
解析：这里是说当你在温暖的日子喝冷饮时能看到这种现象发生，what（什么）、why（为什么）、where（哪里）都不合适，when 表示“当……时候” ，所以选 C。
6. 答案：D
解析：杯子外面会有水珠，是因为空气中的水蒸汽遇冷液化，top（顶部）、back（后面）、inside（里面）不符合，outside 表示“外面” ，所以选 D。
7. 答案：B
解析：是数百万的水滴聚集在一起形成云，groups（组；群）、waste（浪费；废物）、clouds（云）不符合，drops 表示“水滴” ，所以选 B。
8. 答案：C
解析：风会“移动”云，brings（带来）、has（有）、forms（形成）不符合，moves 表示“移动” ，所以选 C。
9. 答案：A
解析：云里的水变成雨“落到”地面，covers（覆盖）、collects（收集）、knocks（敲；打）不符合，falls 表示“落下” ，所以选 A。
10. 答案：C
解析：水的循环又重新“开始”，waits（等待）、digs（挖掘）、worries（担心）不符合，starts 表示“开始” ，所以选 C。
二、短文填空
1. 答案：hands
解析：我们洗手，这里要用 hand 的复数形式 hands，表示两只手 。
2. 答案：to take
解析：use sth. to do sth. 是固定用法，表示“用某物做某事” ，所以这里用 to take 。
3. 答案：once
解析：这里表示一周“一次” ，用 once 。
.4 答案：saves
解析：主语 It 是第三人称单数，一般现在时中，动词要用第三人称单数形式，所以填 saves 。
5. 答案：collects
解析：and 连接并列谓语，前面 sterilizes 是第三人称单数形式，所以这里 collect 也用第三人称单数形式 collects 。
6. 答案：use
解析：情态动词 can 后接动词原形，所以填 use 。
7. 答案：goes
解析：主语 every drop of water 是第三人称单数，一般现在时中，动词用第三人称单数形式 goes 。
8. 答案：of
解析：because of 是固定短语，意为“因为；由于” ，后接名词、代词等 。
9. 答案：a
解析：make a difference 是固定短语，意为“有影响；起作用” 。
10. 答案：In
解析：in fact 是固定短语，意为“事实上；实际上” ，句首单词首字母大写 。
11. 答案：running
解析：keep sth. doing 是固定用法，表示“让某物一直做某事” ，这里表示不让水一直流 。
12. 答案：when
解析：这里是说“当”有很多衣服要洗的时候才洗衣服，用 when 引导时间状语从句 。
13. 答案：teeth
解析：刷牙，tooth 的复数形式是 teeth 。
14. 答案：our
解析：这里表示“我们的”地球，用形容词性物主代词 our 。
15. 答案：is
解析：there be 句型遵循就近原则，water 是不可数名词，所以 be 动词用 is 。
三、阅读理解
A
1. 答案：B
解析：根据文中“The ocean covers about 70% of the earth.”可知，覆盖地球约 70%的是海洋，所以选 B。
2. 答案：D
解析：A 选项与文中“Oceans are home to sea animals like sharks. There are also a lot of small living things”不符；B 选项文中未提及在深海人们会感觉温暖；C 选项文中说有风时海洋可能会很糟糕，而不是看起来美；根据“It's important for us to understand the ocean because it may be full of useful things.”可知我们应该更多了解海洋，D 选项正确。
3. 答案：C
解析：文章主要介绍海洋相关知识，属于科普内容，最有可能来自科学书，storybook（故事书）、movie poster（电影海报）、history book（历史书）不符合，所以选 C。
B
4. 答案：A
解析：根据文中“On a hot summer day, you find the river dries up. Where does the water go It goes into the air!”可知，夏天河里的水进入了空气，所以选 A。
5. 答案：C
解析：根据第二段“As the water in the air cools, it turns into droplets (水滴). They get together to make clouds.”可知，水滴能形成云，C 选项正确。A 选项，文中提到高空中空气是凉爽的，不是温暖的；B 选项，文中未提及云不能移动；D 选项，空气中有水蒸气，并非没有水。
6. 答案：B
解析：文章先讲了水的去向，接着重点阐述了雨是如何形成的，还列举了多雨和干旱的地方，主要围绕雨的形成展开，所以选 B。A 选项水的重要性不是文章主要内容；C、D 选项只是文中举例部分，不能概括全文。
C
7. 答案：C
解析：由文中“the Amazon runs 4,000 miles through Colombia (哥伦比亚) and Brazil (巴西) to the Atlantic Ocean”可知，亚马逊河穿过巴西，所以选 C。
8. 答案：A
解析：根据“The river is usually about one to six miles wide”可知，亚马逊河通常宽约 1 到 6 英里，所以选 A。
9. 答案：D
解析：前文介绍了亚马逊雨林里有色彩鲜艳的鹦鹉、猴子和青蛙等动物，此处应继续介绍动物相关内容，D 选项“在水中，你会发现粉红海豚”符合语境。A 选项“它真的很美”与前文衔接不紧密；B 选项“我们可以吃它们中的一些”，前文未提及能吃的东西；C 选项“每天早上都下雨”与动物内容无关。
10. 答案：A
解析：文章主要介绍了亚马逊河的长度、流经地区、宽度、深度，以及它与亚马逊雨林的关系等，整体围绕亚马逊河展开，A 选项最适合做标题。B 选项亚马逊雨林只是文章一部分内容；C 选项亚马逊的动物也只是部分内容；D 选项“关于亚马逊的故事”表述太宽泛，不具体。
D
11. 答案：B
解析：文章开头“You may think there is only sand (沙子) in the desert, but it is not the fact.”作者先指出人们可能存在的错误认知，然后说明事实并非如此，是通过讲述事实来开篇，所以选 B。
12. 答案：D
解析：根据文中“These animals depend on the desert plants for their food and do not need much water.”可知，这些动物依靠沙漠植物获取食物，“depend on”意思是“依靠” ，所以选 D。
13. 答案：B
解析：由文中“These animals depend on the desert plants for their food and do not need much water.”以及提到骆驼是沙漠动物可知，骆驼不需要太多水，A 选项文中未提及骆驼不能运水；C 选项骆驼吃沙漠植物；D 选项表述不完整且与原文不符，所以选 B。
14. 答案：B
解析：从文中“The desert people have to keep moving from place to place. They must always look for desert plants for their animals. When there is no more food for their animals, they move to another place.”可知，沙漠居民要不断迁徙为动物找食物，生活很艰难，interesting（有趣的）、quiet（安静的）、exciting（令人兴奋的）不符合，hard 表示艰难，所以选 B。
15. 答案：C
解析：文章介绍了沙漠里有绿洲，人们在绿洲种植庄稼，还介绍了沙漠居民的生活，包括他们的动物、生活方式等，主要围绕绿洲和沙漠居民生活展开，A 选项沙漠天气只是部分内容；B 选项绿洲和骆驼不全面；D 选项沙漠里的水也只是部分内容，所以选 C。
四、情景交际
1. 答案：How high is it
解析：根据答语“It’s 99 meters high.”可知，这里是询问尼亚加拉大瀑布有多高，用“How high is it ” 。
2. 答案：Where is it
解析：由答语“It’s in North America.”可知，此句是询问它在哪里，用“Where is it ” 。
3. 答案：Who would you like to go there with
解析：根据答语“I would like to go there with my parents.”可知，这里是询问想和谁一起去，用“Who would you like to go there with ” 。
4. 答案：Can you take some photos there
解析：依据答语“Yes, I can take some photos.”可知，此句是问能不能在那里拍照，用“Can you take some photos there ” 。
5. 答案：Great! / Sounds good! （答案不唯一，合理即可）
解析：上文 B 说回来会给 A 看照片，A 可以用表示赞同、期待的话语回应，如“Great! / Sounds good!” 。
五、书面表达
参考范文
Act Now to Save Water
Water is very important to people. People can't live without water. However, some people waste water. They often forget to turn off the taps and take long showers.
To save water, we can turn off the tap when brushing teeth. We can also reuse waste water to clean the house and water flowers. Moreover, we should encourage our family members and friends to save water together. Let's take action now!