The ______ of AIDS has led to an expansion in research seeking a cure.A、innovati

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问题 The ______ of AIDS has led to an expansion in research seeking a cure.

选项 A、innovation
B、selection
C、proliferation
D、conviction

答案 C

解析 句意:爱滋病的扩散使得人们做更多的研究工作去寻找治疗的方法。proliferation意为“激增;扩散”; innovation意为“革新,创新”;selection意为“选择;选拔”;conviction意为“定罪,判罪”。
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