27. They’re arguing on who, on earth, is known for the great discovery ______ penicillin, an effective bacteria killer.
| A．making up | B．making into | C．made of | D．made from |
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27. They’re arguing on who, on earth, is known for the great discovery ______ penicillin, an effective bacteria killer.
| A．making up | B．making into | C．made of | D．made from |
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