Although Fleming discovered Penicillin, it was over a decade someone else turned it into the great drug of the 20th century.
A. before
B. since
C. when
D. as
Although Fleming discovered Penicillin, it was over a decade someone else turned it into
答案:2 悬赏:50 手机版
解决时间 2021-01-15 11:48
- 提问者网友:沉默菋噵
- 2021-01-15 00:39
最佳答案
- 五星知识达人网友:西岸风
- 2019-06-17 08:42
(答案→)A. beforeB. sinceC. whenD. as解析:考查固定句式:It was/will be+一段时间+before…“要过多长时间就/才…”,句意:虽然弗莱明发现青霉素,但是10多年后其他人才把它变成20世纪伟大的药物。选A。
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- 1楼网友:风格不统一
- 2019-04-09 09:46
对的,就是这个意思
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