NotuntilWorldWarIItousenewchem

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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

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The prisoners then wrote the stories in a book called “The Description of the World”, ____ became one of the best-selling books in Europe.

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第二部分英语知识运用（共两节，满分35分）
第一节单项选择（共15题，满分15分）
I still remember the day___ I attended my first lecture in college.

A．that

B．where

C．which

D．when

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