题目内容
13．Energy，passion and a burning desire are，you see， true learning takes．（ ）| A． | that | B． | what | C． | how | D． | which |
分析 能量，激情和热切的愿望，你知道，是真正的学习所需要的．
解答 答案：B
根据句意可知，"you see"在句中作插入语，" true learning takes"用在了系动词are之后，因此该句是表语从句；A． that在表语从句中，只起连接作用，不作任何成分； B． what 在表语从中可以作主语，宾语和表语； C． how在表语从中作方式状语； D． which 哪一个，用在此处不合句意；由于从句中缺少宾语，意为：真正的学习所需要的（东西）．故选B
点评 本题考查了表语从句的用法．首先应了解表语从句的句子结构；其次要熟练掌握各连接词在表语从句中的用法．
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