Tom is very good at science his brother Jimmy knows nothing about it.A. if B. whenC. while D. because 题目和参考答案——青夏教育精英家教网—

题目内容

( ) 5. Tom is very good at science_______ his brother Jimmy knows nothing about it.

A. if B. when

C. while D. because

C此处while用作连词表示对比，意为"然而"。

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We should do everything we can to protect the environment.( 对画线部分提问）

_______ _______ _______ _______to protect the environment?

Li Ping: Hi,Wang Gang. Where did you go yesterday afternoon? I called you, but you didn't answer.

Wang Gang;I was listening to a talk.

Li Ping;A talk? 1

Wang Gang ：It's about the environment

problem in China. Li Ping; 2

Wang Gang: A professor(教授)from Beijing.

Li Ping: 3

Wang Gang;Certainly. In the talk,he warned (警告) us that pollution was one of the most serious problems in China. More and more people get sick because of air pollution, and some animals are in danger of dying out.

Li Ping ：That's right. 4 Everyone should do something useful to protect the environment.

Wang Gang: 5 Let's be greener people and protect the environment.

A.I agree with you.

B.That's bad.

C.Who gave the talk?

D.What's it about?

E.Could you tell me something about it?

F.The environment around us is getting worse and worse.

G.I don't think so.

1._________2. _______ 3._______

4._______5._______

The Earth is getting warmer because of the activities of people. We cut down and burn trees and send gases into the air with our cars and factories. 1 Sure. We may not be leaders or scientists but we can play our part in protecting the planet. Here are two ideas.

Bike ，don't ride to school

Do you go to school by bus or by bike? If you bike, you are doing something for the Earth. Buses, cars,trains and planes produce a lot of carbon dioxide. If you live near to your school, why not bike there on warm spring mornings? 2

Wash the green way

Do you help your mom and dad wash clothes? Then wash them in an energy-saving way. When you wash clothes, wash them in cold or warm water to save energy ， but not hot water. Wash your clothes when they fill up the machine. 3 Some new ones use as less as one-fourth of the energy of older machines.

When the clothes are clean, dry them in the natural way, by hanging them on a line rather than (而不是)putting them in a dryer.

4 For example ， you can use it to clean the floor,water flowers, trees and so on. In all,you can cut the carbon dioxide used in washing by 90 percent.

5 If everyone pays attention to protecting the environment from himself,our earth will become more beautiful.
阅读上面短文，把A—E五个句子填人文中空，处，使短文内容完整，通顺。

A.Can we do anything about it?

B.The Earth needs a helping hand.

C.Besides, the water that you have used can be reused to do many other things.

D.Or,you can simply walk to school to save energy.

E.Use the most energy-saving (节肯旨的) machine you can find.

1._____2._____ 3._____

4._____ 5._____

Taking away a city's rubbish is a big job. Every day trucks come into a city to collect it. Most rubbish is useless. If we kept these things, we would soon have a mountain of rubbish.

In some cities people collect the rubbish and take it outside of the city to a dump (垃圾场).People often build the city dump in a low ground or a place with a big hole. And they break the kitchen rubbish into small pieces and send it into the sewage system (系统).The sewage system also takes away the used water from toilets and other places.

To keep mice and flies away, people use some earth to cover the newly dumped rubbish. Later, people may plant grass on the rubbish-filled land. Finally, people build a house or a school there.

In other cities people burn the rubbish in special places. The fire burns everything but the metal (金属).Sometimes we can use the metal again in special factories. We can put the food parts of rubbish in special piles and make it change into something called humus ( 豆泥).It looks like black earth. It can feed plants and help to make them grow.

根据短文内容，选择正确答，。

( ) 1. Where do people build the city dump?

A.In the city.

B.In a low ground inside the city.

C.In a high place with a big hole.

D.In a low ground or a place with a big hole outside of the city.

( ) 2. The underlined word " sewage" in the second paragraph means ____.

A.排污 B.染色 C.洗涤D.吸尘

( ) 3. How should we take care of a used metal box according to the passage ？

A.By burning it off.

B.By putting it in water.

C.By throwing it away.

D.By reusing and recycling(回收)it.

( ) 4. What do people use the food parts of the rubbish for?

A.Feeding animals.

B.Feeding plants.

C.Building a house.

D.Making machines.

( ) 5. You can read the passage in ____.

A.a science book

B.a TV guide

C.a history book

D.a telephone book

Kris and Karl come from Europe. They're_____(德国人）.

3.You should get everything ready in case of a difficult ______(局面).

2.Scientists around the world are working to d new medicine for cancer,

中国政府最近通过一些法律来反对空气污染。

Recently ，Chinese government has______ ______ ______air pollution.

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