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题目
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There are 40 students in our class,who come from a  ________of backgrounds.
A.varietyB.mixtureC.extensionD.combination

答案
A
解析
本题考查名词辨析。variety意为“多样性,种类”,表示“他们来自不同的背景”。mixture“混合物,混合体”;extension“伸长,伸展,延伸,范围”;combination“结合,合并,配合,组合”。
核心考点
试题【There are 40 students in our class,who come from a  ________of backgrounds.A.var】;主要考察你对名词等知识点的理解。[详细]
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