They’re arguing on who, on earth, is known for the great discovery        penici

题型：不详难度：来源：

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

答案

C

解析

这题考查的是：make the discovery of penicillin“发现了青霉素”这个词组的变形，the great discovery made of penicillin这里made of penicillin是定语修饰the great discovery。选C。