问题
Penicillin became the greatest drug of the 20th century, without ______ many people ______ from sickness or even small wounds.
A:it, died
B:which, have died
C:which, would have died
D:it, would have died
B:which, have died
C:which, would have died
D:it, would have died
正确答案是：
同类题型
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