题目内容：
探索性调查可根据所研究问题的特点和获取资料的可能条件，选择（ ）两种不同的方式进行。A．小组座谈法和询问法B． 收集分析二手资料和定性调研C．收集原始数据和收集二手资料D．定性调查和定量调查
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单选题：探索性调查可根据所研究问题的特点和获取资料的可能条件,选择( )两种不同的方式进
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