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    精英家教网 > 高中英语 > 题目详情
    The question_______ you should take this medicine should be decided by your family doctor.
    A．whyB．if C． whether D．that
    C

    试题分析：句意，你是否应该吃药这个问题应该由你的家庭医生来决定。通过分析句子结构，其中包含一个同位语从句。if不能引导同位语从句；在同位语从句中that，whether不作成分，that无实际意义，whether表示“是否”。
    点评：同位语从句是用以解释说明某一名词内容的名词，所以它总是跟在某一个名词的后面。
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