2. 考研
  3. The output of television sets has______in the past five years.

The output of television sets has______in the past five years.

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问题 The output of television sets has______in the past five years.
选项 A、more than doubled
B、more than double
C、as many as double
D、as much as double
答案A
解析 这里的double是不及物动词，表示“增加一倍”(或“是原来的两倍”)。Has doubled“已增加了一倍”；has more than doubled“已增加了一倍多”。double还可以用作及物动词，如：I shall double your wages；还可用作形容词，如：I shall give you double pay；还可用作名词，如：She offered me double for it．
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考研英语一

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