单项选择题

Questions 14-17 are based on the following monologue. You now have 20 seconds to read Questions 14-17. Who identified the mould as penicillin

A．One of Fleming’s colleagues.
B．Sir Almroth Wright.
C．Howard Florey.
D．Fleming.

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单项选择题

单项选择题

Questions 14-17 are based on the following monologue. You now have 20 seconds to read Questions 14-17. Who identified the mould as penicillin 您的浏览器不支持 audio 元素。