Just as sound travels through the air in waves, electricity travels through the air in ______ radio

题目简介

Just as sound travels through the air in waves, electricity travels through the air in ______ radio

题目详情

Just as sound travels through the air in waves, electricity travels through the air in ______ radio waves.
A.what is calledB.which is calledC.what it is calledD.which it is called
题型:单选题难度:偏易来源:不详

答案

A
本题考查名词性从句。介词in后面的宾语从句中缺少主语,故用what做主语,故选A。

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