题目内容
【题目】An opinion is _____ someone believes is true but has not been proved.
A. that B. what
C. which D. whether
【答案】B
【解析】试题分析：what someone believes is true做is的表语从句，what指的是an opinion, 由此可知正确选项。
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题目内容
【题目】An opinion is _____ someone believes is true but has not been proved.
A. that B. what
C. which D. whether
【答案】B
【解析】试题分析：what someone believes is true做is的表语从句，what指的是an opinion, 由此可知正确选项。