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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