2. 外语
  3. They were divided on whether to go further by calling for a federal law that would _________ a complete ban on human cloning.

They were divided on whether to go further by calling for a federal law that would _________ a complete ban on human cloning.

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问题 They were divided on whether to go further by calling for a federal law that would _________ a complete ban on human cloning.
选项 A、perform
B、impose
C、comply
D、prescribe
答案B
解析 惯用搭配题。四个选项中能和介词。on形成合理搭配的为[B]impose“强加于”，经常与介词on连用，如impose a ban on the sale of ivory(禁止出售象牙)。[A]perform“履行，完成；[C]comply“顺从，遵守”，常和介词with搭配；[D]prescribe"指定，规定”。
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