2. 外语
  3. The ______ of AIDS has led to an expansion in research seeking a cure.

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

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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 proliferation 意为“激增：扩散”如：proliferation of nuclear arms 核武器扩散；innovation 意为“革新，创新”如：“The innovation of air travel daring this century has made the world seem smaller.”；selection 意为“选择；选拔”；conviction 意为“定罪，判罪”，如："This was his third conviction.”
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