2. 外语
  3. Natural selection is defined as the process ______ the course of evolution by preserving those traits best adapted for an organi

Natural selection is defined as the process ______ the course of evolution by preserving those traits best adapted for an organi

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问题 Natural selection is defined as the process ______ the course of evolution by preserving those traits best adapted for an organism’s survival.
选项 A、to which directs
B、of which directs it
C、directs it
D、that directs
答案D
解析
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