题目内容
In a chemical change, energy cannot be created ,____.
A. nor can it be destroyed B. not it be destroyed C. so can’t it not be destroyed D. either it cannot be destoryed
A
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题目内容
In a chemical change, energy cannot be created ,____.
A. nor can it be destroyed B. not it be destroyed C. so can’t it not be destroyed D. either it cannot be destoryed
A