2. 外语
  3. Eventually the rarer genes will disappear and the genetic types, ______ leaving fewer offspring will become.

Eventually the rarer genes will disappear and the genetic types, ______ leaving fewer offspring will become.

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问题 Eventually the rarer genes will disappear and the genetic types, ______ leaving fewer offspring will become.
选项 A、extinguished
B、extraordinary
C、extinct
D、extreme
答案C
解析
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