The process ---energy is changed from one form into anther i

问题描述：

The process ___energy is changed from one form into anther is called the transformation of energy
A by which B at which C on which D for which
为什么选A?by 和谁有关系呀?
1个回答 分类：英语 2014-10-16

问题解答：

我来补答
which是关系代词,指代前面的process,by which呢其实就是by the process
energy is changed from one form into anther by a process,and the process is called the transformation of energy
 
 
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