【題目】Do you know that the Earth is home to ____animals?

A. millionB. millions

C. millions of

【答案】C

【解析】

句意:你知道地球是數(shù)百萬(wàn)動(dòng)物的家園嗎?

million前面有具體的數(shù)字時(shí),million用單數(shù)形式,如果表示不確定的數(shù)目,million要用復(fù)數(shù)形式,后面與of連用,millions of數(shù)百萬(wàn)。故答案為C

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