(2013·安徽,21)From space, the earth looks blue.This is ________about seventyone p
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(2013·安徽,21)From space, the earth looks blue.This is ________about seventyone percent of its surface is covered by water.A.why | B.how | C.because | D.whether |
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答案
A |
解析
考查名词性从句。此处考查表语从句。根据句意:地球看起来是蓝色的。这是因为其表面71%是被水覆盖的。 |
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