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| 第三期 | |
| 作者姓名： | “医学英语学习园地”编写组 |
| 摘 要： | 阅读材料 The Discovery of Penicillin Penicillin was discovered quite by accident in the autumn of 1928. At thattime, a bacteriologist, Dr. Alexander Flemming, was looking for a substancethat would kill deadly bacteria. In ooder to observe their growth, he had |
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