______electric wires are made from copper or lead is common practice.A、WhatB、Wh

游客2023-11-13 32

问题 ______electric wires are made from copper or lead is common practice.

选项 A、What
B、Whether
C、That
D、How

答案 C

解析主语从句题。句子主语为——electric wires are made from copper or lead。句子谓语为is common practice。当主语从句结构、意义完整时，用that引导，尽管that不作任何成分，没有意义，但不能省略。

转载请注明原文地址:https://tihaiku.com/zcyy/3184067.html

相关试题推荐

随机试题

最新回复(0)

_________commonpotatoscab,mostscabdiseasesarecausedbyvariousfungi.A、T