Unit 4 第二课时 Section 1 Listening and Speaking（分层作业）英语沪教版2024七年级上册

Unit 4 The Earth Section 1 Listening and Speaking 一、指出下列划线部分读音不同的单词（考查[ ʌ ] [ a: ] [ ɔ ] [ ɔ: ] [ u: ] [ u ] [ k ] [ g ]在单词中的发音） 1. A.other B.wash C.want D.doctor 2. A.full B.food C.look D.foot 3. A.put B.push C.should D.pollute 4. A.half B.card C.after D. August 5. A.bike B.carry C.knife D.take 6.A. brother B. must C. home D. month 7.A. doctor B. important C. report D. August 8.A. should B. blue C. food D. pollute 9. A. uncle B. card C. clock D. scientist 10.A. page B. gate C. vegetable D. stage 【答案】1.A 2. B 3.D 4.D 5.C 6.C 7.A 8.A 9.D 10.B 二、用词的适当形式填空 1. There ________ (be) a desk and four chairs in the classroom. 2. Many wild animals are in danger because of the ________ (pollute). 3. You should protect the children from ________ (catch) a cold. 4. It’s very useful for us ________ (learn) English well. 5. Doing exercise regularly makes me________ (energy). 6. We should know the________ (important) of being polite. 7. The weather become colder. There are________ (few) people in the street. 8. We must stop________ (put) waste into rivers. 9.Suddenly, dinosaur all __________ (appear) but nobody knew why. 10. They can take in __________ (harm) gases from the air and produce oxygen for us to breathe. 11. He is the __________ (own) of the house. 12. It is the best __________ (solve) to the problem. 13. We will try our best __________ (solve) the problem. 14.To keep our seas________( health), we should stop__________( use) too many plastics 15.Global warming makes the sea levels ___________(rise). 【答案】1. is 2.pollution 3.catching 4.to learn 5.energetic 6.importance 7.fewer 8.putting 9.disappeared 10.harmful 11.owner 12.solution 13.to solve 14.healthy using 15.rise 三、完成句子 1. 由于全球变暖，北极熊正处于危险之中。 olar bears are ______⁠_ ______ ______ ________ the global warming. 2. 不要砍伐树木。我们应该保护地球。 Don’t _______ _________trees. We should_______ _______ _________. 3. 由于过度捕捞，很多种类的鱼正在灭绝。 Due to overfishing，_____ ______ ________ fish are ________ __________. 4. 塑料污染使许多海洋生物生病。 ______ _____________makes many sea animals _________ __________. 5. 因为人们捕捉了太多的鱼，海里的鱼越来越少。 There are______ ______ ________ ________ in the sea because people catch too many fish. 6. 这个项目耗资巨大，但以失败告终。 The project cost________ ________ _______ _________ money but ________ _________⁠ failure. 【答案】1.in danger because of　2.cut down　protect the earth　3.many kinds of dying out 4.Plastic pollution　get ill　5.fewer and fewer fish　6.a huge amount of ended with 四、补全对话。 A: What did you do over the weekend? B: 1 It was fantastic to be around so many people who care about the environment. A: Do you think there’s anything we can do to protect the environment? B: 2 A: Like what? B: Well, we can use public transport instead of taking our cars. A: 3 B: We should plant more trees. A: 4 Does that actually help? B: Yes. We should take glass, paper, plastic to a recycling bin. A: 5 B: I’m worried that there’s not enough clean water for everyone. A. What do you think is the biggest worry for our future? B. Are you always busy? C. Yes, there are lots of things we can do. D. What other things can we do to protect the environment? E. I went to an environmental meeting. F. How about recycling? G. I’m sorry about that. 【答案】1. E 2. C 3. D 4. F 5. A 【解析】本文是A和B两个人的对话。对话主要谈论了环境保护的相关内容，包括保护环境的具体措施以及建议等。 1. 根据“What did you do over the weekend?”可知，设空处应回答周末做的事情。选项E“我去参加了一个环境会议”符合情景。故选E。 2. 根据“Do you think there’s anything we can do to protect the environment?”可知，设空处应作肯定或否定回答。选项C“是的，我们能做很多事情”符合情景。故选C。 3. 根据“we can use public transport instead of taking our cars”和“We should plant more trees.”可知，介绍完一种可以做的事情后，又介绍了另外一种，所以设空处询问其他的方式。选项D“我们还可以做哪些事情来保护环境”符合情景。故选D。 4. 根据“We should take glass, paper, plastic to a recycling bin.”可知，设空处询问关于回收的话题。选项F“回收怎么样”符合情景。故选F。 5. 根据“I’m worried that there’s not enough clean water for everyone.”可知，设空处询问B将来担心的事情。选项A“你认为我们未来最大的担忧是什么”符合情景。故选A。 五、短文填空 A短文填词 Miss Liu: OK, now we are going to do a little quiz about the sea. Let’s start with the first question. Why are sea levels on our 1.p_________ rising? Wu Di: I know! The sea is getting warmer because of global warming. A lot of the ice in the North and South Poles is 2.d__________. That makes the sea levels 3 r_________. Miss Liu:That’s right, Wu Di. Now question number two. Many kinds of fish are dying 4.o________. Why is this? Li Na: Is it because people 5.c_________ too many fish? Miss Liu: That’s correct. There is another reason too. Can anyone guess? Su Mei: Is it the plastic pollution? I read that a huge amount of plastic rubbish ends up in the sea each year. Fish and other sea animals eat it and get ill. Sea animals also get caught in the plastic and die. Miss Liu: You're right, Su Mei. We need to do something about this. Now, the next question ... (fade out) 【答案】1. planet 2. disappearing 3.rise 4.out 5.catch B语法填空 Hello everyone. Welcome to my blog. My name is Harry, and I come from Germany. Last week, I read 1 article about 2._________(protect) the Earth. I would like to share it with you. The Earth is a wonderful place. There’re forests and rivers, mountains and fields. Besides（除了）the natural beauty, There are also different seasons and weather. Spring is warm, and it often rains 3. (heavy) in summer. In autumn, leaves are 4__________(color). In winter, it is often cold and 5. (snow), so it’s very exciting 6. (make) snowmen. The Earth is our home, and it provides us 7. air, water and food. But today there 8 (be) a lot of 9._________(pollute). We burn things to make energy, and this pollutes the air. We throw away so much rubbish that we pollute the land. We must stop 10. (do) these things to protect the Earth for our future. I want to make friends with junior high school students from all over the world. If you have something good to share with me, email me, please. 【答案】1. an 2.protecting 3.heavily 4.colorful 5.snowy 6.to make 7.with 8.is 9.pollution 10.doing 六、完形填空 Kierman was born in Sydney, Australia, and he grew up near the sea. In 1987,Kierman began to notice(注意到） the huge amount of rubbish in the world's oceans. And he decided to__1__ something about it. He organized(组织） a community activity called "Clean Up Sydney Harbour". On Sunday, 8 January, 1989, more than 40, 000 volunteers(志愿者）came out to Sydney Harbour to clean up __2__.The next year,Kierman worked hard to __3__ the clean-up a national activity. It was successful. Across Australia, about 300,000 people spent the day making their local __4__ better. This activity was getting __5__. In 2002,for example, 800, 000 people cleaned up almost 15, 000 tons of rubbish from Australia's beaches,parks and streets. Kierman was __6__ with the good result of his activity. In 2003, he started an even bigger activity. With the __7__ of the United Nations Environment Programme, he started “Clean Up the World"- an international(国际的）activity. It helps communities around the __8__ in cleaning up and protecting the environment. “Clean Up the World" grows __9__. And soon people from all over the world __10__ about his wonderful idea. 1. A.tell B.play C.do D.wash 2. A.fish B.rubbish C.grass D.air 3. A.make B.keep C.put D.end 4. A.weather B.time C.food D.environment 5. A. older and older B.higher and higher C. bigger and bigger D.longer and longer 6. A.happy B.angry C.sad D.worried 7. A.trouble B.help C.hope D.quiz 8. A.village B.town C.city D.world 9. A.heavily B.slowly C.quickly D.carefully 10. A.read B.know C.write D.worry 【答案】CBADC ABDCB 【解析】 1.句意：他决定为它做点事情。 A告诉，B玩耍，C做，D洗，根据题意，故选答案C。 2.句意：超过4000位志愿者去到悉尼海港清理垃圾。 A鱼，B垃圾，C草，D空气，根据意思，故选B。 3.句意：他努力使这个清洁活动变成全国性的活动。 A使...，B保持，C放置，D结束，根据题意，故选A。 4.句意：整个澳大利亚，超过30万人花费一天，使他们的周围环境更好。 A天气，B时间，C食物，D环境，根据题意，故选D。 5.句意：这个活动变得越来越大。 A越来越老，B越来越高，C越来越大，D越来越长，根据题意，故选C。 6.句意：他对他举办的活动结果感到非常满意。 A高兴的，B生气的，C悲伤的，D焦虑的，根据题意，故选答案A。 7.句意：在联合国环境项目的帮助下。 A困难，B帮助，C希望，D测试，根据题意，故选B。 8.句意：它帮助了全世界关于清洁和保护环境的交流。 A村庄，B城镇，C城市，D世界，根据题意，故选D。 9.句意：清洁全世界项目成长的非常快。 A重地，B满地，C快地，D仔细地，故选C。 10.句意：很快，全世界地人们都知道了他的这个好倡议。 A阅读，B了解，C写，D担心，故选B。 七、阅读理解 A Protect the Earth by joining the club you likeTry something different instead of just watching TV at home during summer holidays. You can choose as many clubs as you like. What’s more, all are FREE! The Tree-planting Club Trees are useful. They provide food and oxygen. They help save energy, clean the air, and improve climate. Join it, and you will get a “GREEN” medal.Time: Monday-Wednesday       Tel:3457-6788 The Riding Club Bike more and drive less. It helps to reduce pollution and it’s good for your health because it’s good exercise. At the same time, it helps to save money.Time: From Monday to Friday    Tel:3458-6789 The Volunteering Club Join the club to clean your community or city with other volunteers. You can take part in protecting animals too. The more volunteers there are, the better the Earth will be.Time: On weekends            Tel:3457-6878 The Shopping Club Try green shopping. Use fewer plastic bags and bring reusable shopping bags. Don’t buy more than you really need. Before going to the store, make a list of the things you have to buy. This way, you may make less waste.Time: Every day except Friday    Tel:3458-6987 1. As a member of the Tree-planting Club, what will you get? A. Some deicious food. B. A “GREEN” medal. C. A lovely animal. D. Some plastic bags. 2. If Jenny wants to protect the environment and keep fit, she may join ________. A. the Tree-planting Club B. the Riding Club C. the Volunteering Club D. the Shopping Club 3. Bill often helps clean the parks with other volunteers ________. A. on Monday B. on Wednesday C. on Thursday D. on Sunday 4. Which of the following is TRUE? A. Call 3457-6878 to join the Tree-planting Club. B. Go to the Riding Club on weekends. C. Join the Volunteering Club to protect animals. D. Pay some money before joining each club. 5. The material may be ________. A. a poster B. a news report C. a postcard D. an e-mail 【答案】1. B 2. B 3. D 4. C 5. A 【解析】本文是四个环保俱乐部的招新广告。 1. 细节理解题。根据“Join it, and you will get a ‘GREEN’ medal.”可知，加入植树俱乐部，你可以得到一个“环保”模型。故选B。 2. 推理判断题。根据“The Riding Club…It helps to reduce pollution and it’s good for your health because it’s good exercise.”可知，加入骑行俱乐部，既可以保护环境又可以锻炼身体。故选B。 3. 推理判断题。根据“The Volunteer Club…Join the club to clean your community or city with other volunteers…Time: On weekends”可知，在周末的时候，和其他志愿者一起清扫社区或城市里的其他地方。故选D。 4. 细节理解题。根据“The Volunteer Club…You can take part in protecting animals too.”可知，加入志愿者俱乐部可以保护动物。故选C。 5. 推理判断题。本文是四个环保俱乐部的招新广告，因此应是一份海报。故选A。 B Dirty water can be dangerous to drink and make people get ill. It is harmful to the environment and it may hurt the animals. So where is the dirty water from?     Sewage (污水) is a big part of dirty water. In many places, it goes straight into rivers, lakes or seas. Too much sewage will kill fish and other water lives. It makes the water unsafe for animals to drink, wash or swim. So we must let the sewage go into rivers in a right way.     Oil is important, but it may be bad for the environment. If a truck or a ship leaks (泄漏) oil, plants and animals may die. For example, when the birds’ bodies are full of oil, they aren’t able to fly. Their feathers may no longer protect them from the cold weather.     Factories often pour waste water into rivers. This may do harm to plants, animals and humans. Some factories filter the waste water before it goes into rivers. In this way, the waste water won’t pollute the river and this helps to keep the environment clean.     Smoke and gases from factories and cars in the air may pollute the environment. When it rains, the chemicals in smoke and gases fall down together with the rain. They can kill plants and animals.     As we all know, water is an important part of human life. And the water resources (资源) are not enough on Earth. So we should try our best to save water and protect the valuable water resources in our daily lives. At the same time, we can also encourage more people to join us. 1. Why do we need to make the sewage go into the rivers rightly? A. The sewage will look dirty. B. The sewage will pollute the air. C. The sewage will kill some animals. D. The sewage will make the drinking water taste bad. 2. What does “it” refer to in Paragraph 3? A. Sewage. B. Oil. C. Truck. D. Bird. 3. What does the underlined word “filter” in Paragraph 4 mean? A. Clean. B. Add. C. Throw. D. Produce. 4. According to the passage, which is NOT the dirty water from? A. Smoke and gases from factories and cars. B. Water from seas. C. Waste water from factories. D. Sewage and oil. 5. What is the purpose of the passage? A. To show the importance of gases. B. To teach people to produce dirty water. C. To tell people to save animals and plants. D. To ask people to protect water resources. 【答案】1. C 2. B 3. A 4. B 5. D 【解析】本文介绍了脏水对人类和环境的危害和以及脏水的来源。我们应该正确处理污水、减少石油泄漏、过滤工厂废水和减少烟雾和气体排放，以保护环境和水资源。 1. 细节理解题。根据第二段“Too much sewage will kill fish and other water lives. It makes the water unsafe for animals to drink, wash or swim. So we must let the sewage go into rivers in a right way.”可知，我们需要让污水正确地流入河流，因为污水会杀死一些动物。故选C。 2. 词义猜测题。根据第二段“Oil is important, but it may be bad for the environment.”可知，石油很重要，但也能对环境有害；据此可知，划线单词“it”指代上文中的“oil”。故选B。 3. 词义猜测题。根据第四段“Some factories filter the waste water before it goes into rivers. In this way, the waste water won’t pollute the river and this helps to keep the environment clean.”可知，从一些工厂流出的废水流入河流而没有污染河流，说明这些工厂对这些废水进行了处理，过滤了有害的物质，使其变得干净了；据此可以推断划线单词“filter”意为“过滤”，与“clean”同义。故选A。 4. 细节理解题。根据第二段“Sewage is a big part of dirty water. In many places, it goes straight into rivers, lakes or seas.”可知，污水是脏水的重要组成部分；根据第三段“Oil is important, but it may be bad for the environment. If a truck or a ship leaks oil, plants and animals may die.”可知，石油很重要，但它可能对环境有害；根据第四段“Factories often pour waste water into rivers.”可知，工厂经常将废水倒入河流；根据第五段“Smoke and gases from factories and cars in the air may pollute the environment. When it rains, the chemicals in smoke and gases fall down together with the rain.”可知，空气中来自工厂和汽车的烟雾和气体可能会污染环境，下雨时，烟雾和气体中的化学物质会随着雨水一起降落；文中没有提到脏水来自海洋里的水。故选B。 5. 主旨大意题。综合全文尤其是最后一段“So we should try our best to save water and protect the valuable water resources in our daily lives. At the same time, we can also encourage more people to join us.”可知，本文主要介绍了污水对环境的危害，呼吁人们保护环境、保护水资源。故选D。 原创精品资源学科网独家享有版权，侵权必究！2 学科网（北京）股份有限公司 $$ Unit 4 The Earth Section 1 Listening and Speaking 一、指出下列划线部分读音不同的单词（考查[ ʌ ] [ a: ] [ ɔ ] [ ɔ: ] [ u: ] [ u ] [ k ] [ g ]在单词中的发音） 1. A.other B.wash C.want D.doctor 2. A.full B.food C.look D.foot 3. A.put B.push C.should D.pollute 4. A.half B.card C.after D. August 5. A.bike B.carry C.knife D.take 6.A. brother B. must C. home D. month 7.A. doctor B. important C. report D. August 8.A. should B. blue C. food D. pollute 9. A. uncle B. card C. clock D. scientist 10.A. page B. gate C. vegetable D. stage 二、用词的适当形式填空 1. There ________ (be) a desk and four chairs in the classroom. 2. Many wild animals are in danger because of the ________ (pollute). 3. You should protect the children from ________ (catch) a cold. 4. It’s very useful for us ________ (learn) English well. 5. Doing exercise regularly makes me________ (energy). 6. We should know the________ (important) of being polite. 7. The weather become colder. There are________ (few) people in the street. 8. We must stop________ (put) waste into rivers. 9.Suddenly, dinosaur all __________ (appear) but nobody knew why. 10. They can take in __________ (harm) gases from the air and produce oxygen for us to breathe. 11. He is the __________ (own) of the house. 12. It is the best __________ (solve) to the problem. 13. We will try our best __________ (solve) the problem. 14.To keep our seas________( health), we should stop__________( use) too many plastics 15.Global warming makes the sea levels ___________(rise). 三、完成句子 1. 由于全球变暖，北极熊正处于危险之中。 olar bears are ______⁠_ ______ ______ ________ the global warming. 2. 不要砍伐树木。我们应该保护地球。 Don’t _______ _________trees. We should_______ _______ _________. 3. 由于过度捕捞，很多种类的鱼正在灭绝。 Due to overfishing，_____ ______ ________ fish are ________ __________. 4. 塑料污染使许多海洋生物生病。 ______ _____________makes many sea animals _________ __________. 5. 因为人们捕捉了太多的鱼，海里的鱼越来越少。 There are______ ______ ________ ________ in the sea because people catch too many fish. 6. 这个项目耗资巨大，但以失败告终。 The project cost________ ________ _______ _________ money but ________ _________⁠ failure. 四、补全对话。 A: What did you do over the weekend? B: 1 It was fantastic to be around so many people who care about the environment. A: Do you think there’s anything we can do to protect the environment? B: 2 A: Like what? B: Well, we can use public transport instead of taking our cars. A: 3 B: We should plant more trees. A: 4 Does that actually help? B: Yes. We should take glass, paper, plastic to a recycling bin. A: 5 B: I’m worried that there’s not enough clean water for everyone. A. What do you think is the biggest worry for our future? B. Are you always busy? C. Yes, there are lots of things we can do. D. What other things can we do to protect the environment? E. I went to an environmental meeting. F. How about recycling? G. I’m sorry about that. 五、短文填空 A短文填词 Miss Liu: OK, now we are going to do a little quiz about the sea. Let’s start with the first question. Why are sea levels on our 1.p_________ rising? Wu Di: I know! The sea is getting warmer because of global warming. A lot of the ice in the North and South Poles is 2.d__________. That makes the sea levels 3 r_________. Miss Liu:That’s right, Wu Di. Now question number two. Many kinds of fish are dying 4.o________. Why is this? Li Na: Is it because people 5.c_________ too many fish? Miss Liu: That’s correct. There is another reason too. Can anyone guess? Su Mei: Is it the plastic pollution? I read that a huge amount of plastic rubbish ends up in the sea each year. Fish and other sea animals eat it and get ill. Sea animals also get caught in the plastic and die. Miss Liu: You're right, Su Mei. We need to do something about this. Now, the next question ... (fade out) B语法填空 Hello everyone. Welcome to my blog. My name is Harry, and I come from Germany. Last week, I read 1 article about 2._________(protect) the Earth. I would like to share it with you. The Earth is a wonderful place. There’re forests and rivers, mountains and fields. Besides（除了）the natural beauty, There are also different seasons and weather. Spring is warm, and it often rains 3. (heavy) in summer. In autumn, leaves are 4__________(color). In winter, it is often cold and 5. (snow), so it’s very exciting 6. (make) snowmen. The Earth is our home, and it provides us 7. air, water and food. But today there 8 (be) a lot of 9._________(pollute). We burn things to make energy, and this pollutes the air. We throw away so much rubbish that we pollute the land. We must stop 10. (do) these things to protect the Earth for our future. I want to make friends with junior high school students from all over the world. If you have something good to share with me, email me, please. 六、完形填空 Kierman was born in Sydney, Australia, and he grew up near the sea. In 1987,Kierman began to notice(注意到） the huge amount of rubbish in the world's oceans. And he decided to__1__ something about it. He organized(组织） a community activity called "Clean Up Sydney Harbour". On Sunday, 8 January, 1989, more than 40, 000 volunteers(志愿者）came out to Sydney Harbour to clean up __2__.The next year,Kierman worked hard to __3__ the clean-up a national activity. It was successful. Across Australia, about 300,000 people spent the day making their local __4__ better. This activity was getting __5__. In 2002,for example, 800, 000 people cleaned up almost 15, 000 tons of rubbish from Australia's beaches,parks and streets. Kierman was __6__ with the good result of his activity. In 2003, he started an even bigger activity. With the __7__ of the United Nations Environment Programme, he started “Clean Up the World"- an international(国际的）activity. It helps communities around the __8__ in cleaning up and protecting the environment. “Clean Up the World" grows __9__. And soon people from all over the world __10__ about his wonderful idea. 1. A.tell B.play C.do D.wash 2. A.fish B.rubbish C.grass D.air 3. A.make B.keep C.put D.end 4. A.weather B.time C.food D.environment 5. A. older and older B.higher and higher C. bigger and bigger D.longer and longer 6. A.happy B.angry C.sad D.worried 7. A.trouble B.help C.hope D.quiz 8. A.village B.town C.city D.world 9. A.heavily B.slowly C.quickly D.carefully 10. A.read B.know C.write D.worry 七、阅读理解 A Protect the Earth by joining the club you likeTry something different instead of just watching TV at home during summer holidays. You can choose as many clubs as you like. What’s more, all are FREE! The Tree-planting Club Trees are useful. They provide food and oxygen. They help save energy, clean the air, and improve climate. Join it, and you will get a “GREEN” medal.Time: Monday-Wednesday       Tel:3457-6788 The Riding Club Bike more and drive less. It helps to reduce pollution and it’s good for your health because it’s good exercise. At the same time, it helps to save money.Time: From Monday to Friday    Tel:3458-6789 The Volunteering Club Join the club to clean your community or city with other volunteers. You can take part in protecting animals too. The more volunteers there are, the better the Earth will be.Time: On weekends            Tel:3457-6878 The Shopping Club Try green shopping. Use fewer plastic bags and bring reusable shopping bags. Don’t buy more than you really need. Before going to the store, make a list of the things you have to buy. This way, you may make less waste.Time: Every day except Friday    Tel:3458-6987 1. As a member of the Tree-planting Club, what will you get? A. Some deicious food. B. A “GREEN” medal. C. A lovely animal. D. Some plastic bags. 2. If Jenny wants to protect the environment and keep fit, she may join ________. A. the Tree-planting Club B. the Riding Club C. the Volunteering Club D. the Shopping Club 3. Bill often helps clean the parks with other volunteers ________. A. on Monday B. on Wednesday C. on Thursday D. on Sunday 4. Which of the following is TRUE? A. Call 3457-6878 to join the Tree-planting Club. B. Go to the Riding Club on weekends. C. Join the Volunteering Club to protect animals. D. Pay some money before joining each club. 5. The material may be ________. A. a poster B. a news report C. a postcard D. an e-mail B Dirty water can be dangerous to drink and make people get ill. It is harmful to the environment and it may hurt the animals. So where is the dirty water from?     Sewage (污水) is a big part of dirty water. In many places, it goes straight into rivers, lakes or seas. Too much sewage will kill fish and other water lives. It makes the water unsafe for animals to drink, wash or swim. So we must let the sewage go into rivers in a right way.     Oil is important, but it may be bad for the environment. If a truck or a ship leaks (泄漏) oil, plants and animals may die. For example, when the birds’ bodies are full of oil, they aren’t able to fly. Their feathers may no longer protect them from the cold weather.     Factories often pour waste water into rivers. This may do harm to plants, animals and humans. Some factories filter the waste water before it goes into rivers. In this way, the waste water won’t pollute the river and this helps to keep the environment clean.     Smoke and gases from factories and cars in the air may pollute the environment. When it rains, the chemicals in smoke and gases fall down together with the rain. They can kill plants and animals.     As we all know, water is an important part of human life. And the water resources (资源) are not enough on Earth. So we should try our best to save water and protect the valuable water resources in our daily lives. At the same time, we can also encourage more people to join us. 1. Why do we need to make the sewage go into the rivers rightly? A. The sewage will look dirty. B. The sewage will pollute the air. C. The sewage will kill some animals. D. The sewage will make the drinking water taste bad. 2. What does “it” refer to in Paragraph 3? A. Sewage. B. Oil. C. Truck. D. Bird. 3. What does the underlined word “filter” in Paragraph 4 mean? A. Clean. B. Add. C. Throw. D. Produce. 4. According to the passage, which is NOT the dirty water from? A. Smoke and gases from factories and cars. B. Water from seas. C. Waste water from factories. D. Sewage and oil. 5. What is the purpose of the passage? A. To show the importance of gases. B. To teach people to produce dirty water. C. To tell people to save animals and plants. D. To ask people to protect water resources. 原创精品资源学科网独家享有版权，侵权必究！2 学科网（北京）股份有限公司 $$