2. London is the c of England.
鸿图图书寒假作业假期作业吉林大学出版社系列答案科目：初中英语 来源： 题型：
( ) 3. It's easy for me the visitor from Australia because I'm good at English.
A. follow B. follows
C. following D. to follow
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The population problem may be the greatest one of the world today. The world's population is growing faster and faster. Two thousand years ago,there were only 250 million people on the earth. Four hundred years ago, the number was over 500 million. But at the beginning of the 20th century, the world's population was about 1,700 million. In 1970, the number was 3,600 million. In 1990, the number was five billion. A UN report said that the world's population had passed six billion by the end of the 20th century. This was just ten years after it reached five billion. By October 31 ， 2011 ，with a new baby's birth, the world's population had reached 7 billion. But another billion is coming by 2025 ，and the total will reach 10 billion before the end of the century.
根据短文内容，完成下面表格。
Time | World's Population |
Two thousand years ago | § ■c。o |
Four hundred years ago | The number was 2 . |
3 | The world's population was about 1 ，700 million. |
By the end of the 20th century | The world's population had 4 . |
By the year of 2025 | The world's population will be 5 . |
1.___________ 2.___________ 3.________
4.___________ 5._____________
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( ) 5. —Do you know how a computer works， Jerry?
―By __ the orders typed by people.
A. taking out B. looking out
C. going out D. carrying out
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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 are we 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 away the water that you have used，for you can use it to wash vegetables or fruits. You can use it to 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，选择最佳答案。
( ) 1. About of water on the earth is sea water.
A. 30% B. 97%
C.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 the 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 the 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 we should do to save water
D. what fresh water is
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2. 刘莉学习非常努力，结果很顺利地通过了考试。
Liu Li studied very hard.__ ， she passed the exams easily.
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3. ——What do you think of her new book?
―It provides ( value ) advice on how to learn English well.
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