Very few scientists ______ completely new answers to the world’s problems.

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问题 Very few scientists ______ completely new answers to the world’s problems.

选项 A、come up with
B、come out
C、come round
D、come up to

答案A

解析 A come up with意为“想出(计划、答复),提出”,符合题意,故为答案。而B come out意为“出版,结果是”,C come round意为“恢复知觉,到来”,D come up to意为“及得上,不亚于”都与题意不符,故排除。
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