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    精英家教网 > 高中英语 > 题目详情
    There are 40 students in our class，who come from a  ________of backgrounds.
    A．varietyB．mixtureC．extensionD．combination
    A
    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”。
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