—There is hardly an environment on earth —Some species of animals have no_刷题宝

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—There is hardly an environment on earth
—Some specie

s of animals have not adapted successfully.

A．to which

B．in which

C．for which

D．on which

上一题下一题 0.64难度单项选择更新时间:2017-02-07 04:17:37

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