【題目】Two ______ of the earth’s surface ______ water.

A．third; isB．thirds; is

C．third; areD．thirds; are

【答案】B

【解析】

試題解析：英語中分?jǐn)?shù)的用法，分母用序數(shù)詞、分子用基數(shù)詞，當(dāng)分子為2或2以上的數(shù)字，分母要加s；主語surface為不可數(shù)名詞，故謂語動(dòng)詞用單數(shù)。

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