四、请根据所给图片写出日常生活中环保者应做的事情。
1. Turn off the lights when you leave a room.
2. Walk or ride a bike instead of driving a car when we travel a short distance.
3. Don't litter around. Throw litter into the dustbin.
题目来源：仁爱英语同步练习册九年级上册仁爱版 > Topic3 What can we do at home to protect the environment?
科目：初中英语 来源： 题型：
As we know,we are short of water. It seems strange that about 3/4 of the surface of the earth is covered with water,but why we are still short of water. Because about 3% of water on the earth is fresh water which we can drink or use for watering plants directly. The rest is sea water.
With the development of the modern society,we need more water. But how can we avoid the serious water shortage? First ，we should learn how to save every drop of water. Second ，we should find out the ways to reuse it. Some scientists have studied in this field for many years. Now people use water only once in most big cities. But people should use it again. For example ，don't pour out the water that you used to wash vegetables or fruits. You can use it fo clean the floor,the windows or the toilet. Even if every large city reuses its water ，we still have no enough water. What should we do next?
The sea seems the best answer. There is a lot of water in the sea. All that we need to do is to make the salt out of sea water. But this process costs too much. Scientists are trying to find a cheaper way of doing it. If we find a proper way ，we'll not worry about the danger of water shortage.
根据短文内容，选择正确答案。
( ) 1. About_____ of water on earth is sea water.
A. 30% B.97%
B. 3/4 D.1/4
( ) 2. How many tips that we need to do to avoid water shortage are mentioned in the passage?
A.5. B.4.
C.3. D.2.
( ) 3. People in most big cities should____ .
A. reuse water
B. use water once
C. pour water directly
D. use water to clean floor
( ) 4. Which is NOT true according to the passage?
A. We are still short of water.
B. People are always finding ways to reuse water.
C. We have avoided water shortage.
D. Most water on earth is sea water.
( ) 5. The passage is about
A. how to solve the water shortage
B. how to change sea water into fresh water
C. what should we do to save water
D. what's fresh water
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科目：初中英语 来源： 题型：
( ) 3. ―Would you like to be a greener person?
― _______Everyone ought to protect the environment.
A.It's a pleasure.
B.Of course.
C.That's OK.
D.Good idea!
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科目：初中英语 来源： 题型：
( ) 5. To fight against pollution____ a long time. That means we have a long way to
go.
A. costs B. spends
C. continues D. requires
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科目：初中英语 来源： 题型：
( ) 2. I met an old friend on the street, but I_______forgot his name. What a shame ！
A. probably B. luckily
C. completely D. hardly
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科目：初中英语 来源： 题型：
( ) 3. —I want to be a top student，what should I do?
——First, you should do everything you can ____ on your lessons.
A. study hard B. to study hard
C. studying hard D. to study hardly
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科目：初中英语 来源： 题型：
( ) 2. ―I find English is not difficult. It's easy to learn it well.
―______ You must try your best.
A.It's a piece of cake.
B.Actions speak louder than words.
C.Easier said than done.
D.The early bird catches the worm.
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科目：初中英语 来源： 题型：
20世纪70年代，美国人发明了照相机和手机。
_______ _____ _____，Americans developed digital cameras and cellphones.
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