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    【题目】Without coconuts, most of the tropical islands in the South Pacific ________ uninhabitable for both animals and people.

    A.must have remainedB.may have remained

    C.need have remainedD.would have remained

    【答案】D

    【解析】

    考查含蓄条件句。句意：如果没有椰子的话，大多数南太平洋的热带岛屿对于人和动物而言都将会不适宜居住。本处考查含蓄条件句，这里从句可以用另外一种形式If there were no coconuts, 表示与过去事实相反的假设，主句结构：主语+should(would, could, might)+现在完成时+其他。故选D。

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