41 The phrase"the world"in the first line of the passage refers to
A "you"．
B "man"．
C "woman".
D "they"．
42 What percentage of the earth's water can man actually use at present?
A Less than 3 per cent.
B Nearly 75 per cent．
C About 97 per cent．
D Exactly3 per cent.
43According to the passage we can avoid a worldwide water shortage in the future by
A increasing rainfall．
B cutting down our consumption of water.
C reusing water and utmzing sea-waterl.
D reducing the number of factories producing steel.
44 Which of the following starements，according to the passage，is NOT true?
A A 1imited water supply will affect industrial production．
B Purified water is not exactly as fresh as spring water.
C Every lagge city purifies and reusesits water.
D Oceans are the largest water source．
45 According to the passage,sea-water can be turned into fresh water by
A heating it up．
B treating it with chemicals.
C drying it up．
D taking salt out of it.
第5部分：補(bǔ)全短文 (第46~50題，每題2分，共10分)
閱讀下面的短文，文章中有5處空白，文章后面有6組文字，請根據(jù)文章的內(nèi)容選擇5組文字，將其分別放回文章原有位置，以恢復(fù)文章原貌。請將答案涂在答題卡相應(yīng)的位置上。
Home Schooling
A11children in the United States have to receive an education，but the law does not say they have to be educated at school . A number of parents prefer not to send their children to schoo1． (46)There are about 300，000 home-schoo1ers in the United States today．Some parents prefer teaching their children at home because they do not believe that public schoo1s teach the correct religious values ; others belive they can provide a better educational experience for their children by teaching them at home (47)
A "you"．
B "man"．
C "woman".
D "they"．
42 What percentage of the earth's water can man actually use at present?
A Less than 3 per cent.
B Nearly 75 per cent．
C About 97 per cent．
D Exactly3 per cent.
43According to the passage we can avoid a worldwide water shortage in the future by
A increasing rainfall．
B cutting down our consumption of water.
C reusing water and utmzing sea-waterl.
D reducing the number of factories producing steel.
44 Which of the following starements，according to the passage，is NOT true?
A A 1imited water supply will affect industrial production．
B Purified water is not exactly as fresh as spring water.
C Every lagge city purifies and reusesits water.
D Oceans are the largest water source．
45 According to the passage,sea-water can be turned into fresh water by
A heating it up．
B treating it with chemicals.
C drying it up．
D taking salt out of it.
第5部分：補(bǔ)全短文 (第46~50題，每題2分，共10分)
閱讀下面的短文，文章中有5處空白，文章后面有6組文字，請根據(jù)文章的內(nèi)容選擇5組文字，將其分別放回文章原有位置，以恢復(fù)文章原貌。請將答案涂在答題卡相應(yīng)的位置上。
Home Schooling
A11children in the United States have to receive an education，but the law does not say they have to be educated at school . A number of parents prefer not to send their children to schoo1． (46)There are about 300，000 home-schoo1ers in the United States today．Some parents prefer teaching their children at home because they do not believe that public schoo1s teach the correct religious values ; others belive they can provide a better educational experience for their children by teaching them at home (47)