2. 职称英语
  3. 30 years ago, scientists _____ with the theory that protons and neutrons are com

30 years ago, scientists _____ with the theory that protons and neutrons are com

游客2024-09-16  15
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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