Twenty percent of the water ______ from the underground(地下).

A. is B. come C.be D. are

 

A

【解析】

試題分析:句意:百分之二十的水來自地下。Come from和 be from意思相同,都是“來自……”。分?jǐn)?shù)作主語(yǔ)時(shí)用單動(dòng)還是復(fù)動(dòng)不是看分?jǐn)?shù)本身,而是看of后的名詞。如果該名詞是復(fù)數(shù)即用復(fù)動(dòng),如果是單數(shù)或不可數(shù)名詞則用單動(dòng)。故選A。

考點(diǎn):考查主謂一致。

 

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