A. Icebergs are not like sea ice, which is formed when the sea itself freezes.

　　B. Now it is being considered quite serious by many nations.

　　C. 7,659 trillion metric tons of ice are floating on the sea every year.

　　D. But the water they could provide would be far cheaper than that produced.

　　E. To move them to dry parts of the world would not be too difficult.

　　F. It is not a dream to get water from icebergs.

　　G. Three-quarters of the Earth’s fresh water supply is still tied up in glacial ice.

　　【参考答案】71—75、BGAED

　　【2017高考英语模拟试题】

　　根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

　　When we're young children, many of us seem to have little trouble making new friends.__71__As adults, we tend to become more guarded with new people and have less time to devote to friendships. Consequently, most of us find it much harder to make new friends.

　　If you've never experienced a close friendship, even as a child, you may find it even harder.But we all need and want good friends, even those of us who may sometimes pretend otherwise.

　　The need for friends is instinctual(本能的). Our survival used to depend on having friends to hunt and find food with, to help us build shelter and keep our families safe.__72__They add meaning to life.They help you enjoy the good times and overcome the difficult ones.

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