【題目】It is said that the population of the earth _____ over 70 billion.

A. is B.are C. has

【答案】A

【解析】

試題分析：句意：據(jù)說地球上的人口已經(jīng)超過了70億。the population of...表示……的人口。謂語動詞用單數(shù)。故選A。

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