题目内容
3．There is no doubt _____those working hard can pass the exam easily．（ ）| A． | whether | B． | if | C． | that | D． | what |
分析 句意：毫无疑问的是那些努力的人能够容易的通过考试．
解答 答案C．"_____those working hard can pass the exam easily"是doubt的内容，是同位语从句．句子中结构和意义完整，故用that来连接，只起连接作用，不做任何成分，没有任何意义．"there is no doubt that"毫无疑问的是…"whether"是否；"if"是否（不用于同位语从句），如果；"what"在名词性从句中做主语，宾语，表语．故选C．
点评 本题考查同位语从句，要分析句子的结构和意思，才能选择出正确的选项．
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