30 years ago, scientists_____ with the theory that protons and neutrons are comp

游客2023-10-29  25

问题 30 years ago, scientists_____ with the theory that protons and neutrons are composed of three smaller particles.

选项 A、came down
B、came out
C、came along
D、came up

答案 D

解析 考查动词短语辨析。come up with表示“想出(计划、答复等),提出”,符合题意。come out with意为“(突然)说出;提出”。相较之下,不如come up with合适。come down with意为“患……病,染上……病”;come along意为“进展;健康好转;偶然出现;追随”等,后一般不接with。
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