题目

___ we know, in a chemical change, energy cannot be created, ____.         A. Which, nor can it be destoyed        B.As, neither it can be destroyed C. As, neither is it able to be destoryrf    D. What, nor is destoryed 答案：C 解析: As we know 是常见句型；neither是否定副词，放在句首，句子应倒装。

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