They’re arguing on who, on earth, is known for the great discovery        penicillin, an effective bacteria killer.
A．making upB．making intoC．made ofD．made from
C

這題考查的是：make the discovery of penicillin“發(fā)現(xiàn)了青霉素”這個(gè)詞組的變形，the great discovery made of penicillin這里made of penicillin是定語(yǔ)修飾the great discovery。選C。
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