It is a difficult problem for high school studentsthey can properly use the Internet.A.whatB.whereC.

题目简介

It is a difficult problem for high school studentsthey can properly use the Internet.A.whatB.whereC.

题目详情

It is a difficult problem for high school students      they can properly use the Internet.
A.whatB.whereC.whenD.whether
题型:单选题难度:中档来源:不详

答案

D               
             
试题分析:考查主语从句。句意:对于高中生来说,他们是否能正确的利用网络是一件很难的问题。句子中it 是形式主语,真正主语是whether引导的主语从句,根据句意得出选D项。          
考点 : 考查主语从句

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