Engines are to machines____hearts are to animals.A.as B.that C.what D.which

问题描述:

Engines are to machines____hearts are to animals.A.as B.that C.what D.which
这题选什么啊,然后分析一下,谢
那为什么A。as 不对?

这有个固定格式.A is to B what C is to D.印象很深的,放心吧.选C