When had the modern era of medicine dawned?
A、Theuseofvaccination.;
B、Therecognitionofmicro-organisms.;
C、Thediscoveryanduseofpenicillin.;
D、Thesuccessofhearttransplant.
发布时间：2024-11-17 06:40:51
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答案：The discovery and use of penicillin.
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