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【题目】Some scientists don't deny the existence of aliens ,but further evidence is still needed to _____ it.

A. compromise B. confirm

C. commit D. concern

【答案】B

【解析】考查动词辨析。A. compromise妥协;B. confirm确认,证实;C. commit犯罪,指派; D. concern涉及,关心。句意:一些科学家并不否认外星人的存在,但是进一步的证据仍需证实。表示证实证据,故选B.

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