Some people say that Mars should be protected as a wildlife reserve where we do
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Some people say that Mars should be protected as a wildlife reserve where we do everything possible to avoid pollution, on the _______ that life could exist on it.
A. assumption????? ????????????? B. arrangement?? ????????????? ????????????? C. assistance????? ????????????? D. appointment
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【答案】
A???????????????
【解析】?????????????
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