题目内容

抗菌药物青霉素的效价单位是

A. L
B. μl
C. mg
D. U
E. μg

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Dean and Carolyn always put small presents in ______ stockings on Christmas Day.

A. each other's
B. each other
C. each others
D. each others'

The ______ is just around the comer and you won't miss it.

A. bicycle's shop
B. bicycle shop
C. bicycles shop
D. bicycles' shop

It seems to me that what Lucy saw and heard ______ very interesting.

A. was
B. were
C. is
D. are

无需通过做皮肤过敏试验预防过敏反应的药物是

A. 青霉素
B. 链霉素
C. 糜蛋白酶
D. 鲑鱼降钙素
E. 红霉素

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