题目内容
1．Portable video phones will show us _____ is happening at the other end of the line．（ ）| A． | which | B． | what | C． | how | D． | why |
分析 手提式轻便视频电话会给我们展示在电话的另一端正在发生什么事情．
解答 答案：B which哪一个，哪一些，常常用作定语；what什么，常用作主语；how怎样，如何，常对方式，程度等进行提问；why为什么，对原因状语进行提问．根据"_____ is happening at the other end of the line．"可知空格处需要一个可以作主语的词，引导宾语从句，作show的宾语．故选B．
点评 首先要掌握这几个疑问代词不同的句法作用，然后根据句子需要的成份做出正确选择．
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