【題目】 Why does the earth look blue in space?

Because most of the earths surface ______ by water.

A.covers B.is covered

C.cover D.are covered

【答案】B

【解析】

試題分析:句意:-為什么在太空中,地球看上去是藍(lán)色的?-因?yàn)榈厍虻拇蟛糠值胤奖凰采w著。句子的主語surface是謂語動(dòng)詞cover的承受者,句子用被動(dòng)詞語態(tài),most of the earths surface表示單數(shù)含義,謂語動(dòng)詞用單數(shù)形式。故選B。

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