By the year 2030, it’s estimated that more than two thirds of the world’s population will be living in cities —______today.

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问题 By the year 2030, it’s estimated that more than two thirds of the world’s population will be living in cities —______today.

选项 A、twice as many as
B、as twice as many
C、as much as twice
D、as much twice as

答案A

解析 本题考查倍数表达法。根据选项可知,本题采用的是“倍数+as+many/much+as”结构。在这里,其比较对象是人,为可数名词,用many进行修饰,故答案为[A]项。句意:到2030年,预计世界2/3以上的人口将居住在城市,这是现在的两倍。
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