NotuntilWorldWarII
問題詳情:
Not until World War II ______ to use new chemical techniques to purify penicillin.
A.they managed B.that they managed
C.did they manage D.they didn’t manage
【回答】
C
知識點:倒裝與省略
題型:選擇題
問題詳情:
Not until World War II ______ to use new chemical techniques to purify penicillin.
A.they managed B.that they managed
C.did they manage D.they didn’t manage
【回答】
C
知識點:倒裝與省略
題型:選擇題