6．We can not help but____what unknown greatness human beings have has not yet been discovered．（　　）
A．to wonderB．wonderC．wonderingD．wondered

分析 我們不得不想知道人類還有什么偉大之處是沒有被發(fā)掘的．

解答 答案：B
根據(jù)題干分析"what unknown greatness human beings have has not yet been discovered"是"wonder"后一個賓語從句，"human beings have"又是greatness一個定語從句．另外，can not help but do 固定短語"不得不做"，故選B．

點評 本題考查固定短語．題干比較難，要求學(xué)生平時要多積累相關(guān)短語，并學(xué)會分析句子結(jié)構(gòu)．

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