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帮忙解释个选择-3___ work is being done, energy is being converted f

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帮忙解释个选择-3
___ work is being done, energy is being converted from one form into another.
A. Whenever
B. However
请写出你为啥选A/B, 谢谢啦!:)
A
意思是"只要一做工,能量总会从一种形式转换成另一种形式."
选B肯定错,however+形容词,后面才能跟句子,如:
However beautiful she is,she will no be forgiven for her misdeeds.
无论她多漂亮,也不能为世人所原谅她犯下的错误.