Some well-known scientists believe that there is not enough oxygen on Mars to ______ human
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Some well-known scientists believe that there is not enough oxygen on Mars to ______ human life.
A.remain
B.sustain
C.retain
D.last
请帮忙给出正确答案和分析,谢谢!
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正确答案:B
动词词义辨析题。remain表示“保持,逗留,剩余,残存”;sustain表示“支撑,维持”;retain表示“保持,保留”;last表示“持续”。氧气是维持人类生存用的,B正确。
