题目内容

【26】

A. places
B. nests
C. residences
D. habitats

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【36】

A. stationed
B. perched
C. placed
D. deposited

【25】

A. available
B. unavailable
C. edible
D. inedible

【27】

A. practice
B. proof
C. show
D. comparison

When was the penicillin mass-produced？

A. In 1928.
B. In 1913.
C. After World War II.
D. By World War II.