题目内容
4. Animals that could not themselves to the changing environment gradually died out.
A. change B. adapt C. imitate D. observe
4. B
4. B解析:句意:无法适应环境变化的动物 逐渐灭绝了。
adapt oneself to为固定短语, 意为“适应”。
change意为“改变;变化”; imitate意为“模仿;仿效”;observe意为“观 家,。
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