◎ 题干
Here are some things        they've learned from scientific studies.      
[     ]
A. which    
B. what    
C. that
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Here are some thingsthey've learned from scientific studies.[ ]A. whichB. whatC. that…”主要考查了你对  【关系代词】【定语从句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。