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        1. 【題目】About ________ of the earth is covered with water, but more and more water has been polluted.

          A.three-forthB.three-forthsC.three-fourthD.three-fourths

          【答案】D

          【解析】

          句意:地球大約四分之三都覆蓋著水,但是越來(lái)越多的水已經(jīng)被污染了。

          考查分?jǐn)?shù)的表達(dá)。英語(yǔ)中表達(dá)分?jǐn)?shù)時(shí),分子用基數(shù)詞;分母用序數(shù)詞,分子大于一時(shí),表示分母的序數(shù)詞用復(fù)數(shù)形式。故選D。

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