The discovery of Penicillin, famously, was a happy （）._精华吧

The discovery of Penicillin, famously, was a happy （）.

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The discovery of Penicillin, famously, was a happy （）.

A.ending

B.medium

C.hour

D.accident

正确答案：accident

Tag：大学英语词汇解析时间：2022-01-01 14:44:15

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