一道英语题,会的来

来源：百度知道 编辑：UC知道 时间：2024/05/22 23:46:05
The materials ( )it is difficult for electricity to flow are known as insulators or non-condutctors.
A.from them
B.on which
C.through them
D.through which

题目应该是这个吧（去掉it）The materials ( ) is difficult for electricity to flow are known as insulators or non-condutctors.

选d。首先是定语从句，排除c
这属于一个搭配问题，只不过顺序给变动了一下
应学会还原。
原句应为 electricity flow ( ) the materials
很显然是电从材料中流过，贯穿的流应选through

所以选d

[Questions Every Day (QuEvDa)原创]

B