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    【题目】Thirty percent of the cattle __________ thin, but the rest __________ fat.

    A. are; are B. is; is

    C. is; are D. are; is

    【答案】A

    【解析】句意：百分之三十的牛很瘦，其余的很胖。Thirty percent修饰集体名词cattle,谓语动词用复数； the rest指代cattle,谓语动词也用复数。

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