2. 外语
  3. It used to take decades, or even centuries, for the technologies of one country______in another.

It used to take decades, or even centuries, for the technologies of one country______in another.

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问题 It used to take decades, or even centuries, for the technologies of one country______in another.
选项 A、to adopt
B、having been adopted
C、to have adopted
D、to be adopted
答案D
解析
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