Nearly ______ of the earth _______ covered by sea。

  A. three fourth; is    B. three fourths; is

  C. three forth; are    D. three fourths; are

B

【解析】本題題意為“地球?qū)⒔姆种拿娣e被海洋覆蓋著。”英語中的分數(shù)，分子用基數(shù)詞，分母用序數(shù)詞；分子大于1時，分母要用復(fù)數(shù)，首先排除A和C，“分數(shù)+of+名詞”作主語時，其謂語動詞要與of后面的名詞在數(shù)上保持一致，因此答案為B。

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