皮皮学，免费搜题
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【单选题】
配伍变化A.
药物配伍后理化性质或生理效应方面产生的变化
B.
在一定条件下产生的不利于生产、应用和治疗的配伍变化
C.
药物的相互作用研究包括药动学以及药效学的相互作用
D.
研究药物制剂配伍变化的目的是保证用药安全有效、防止医疗事故的发生
E.
可通过改变贮存条件、调配次序，改变溶剂或添加助溶剂，调整pH或处方组成克服物理化学配伍禁忌
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【单选题】We are told everywhere. It's our duty to keep our school clean and tidy. [ ]
A.
not to make much noise
B.
to throw waster paper
C.
to draw
D.
not to spit
【单选题】Trees and flowers _____ every year to make our school more beautiful. A. plant B. are planted C. were planted
A.
plant
B.
are planted
C.
were planted
【单选题】In class, Miss Zhang is really __ about our study. But after class, she always tries many ways to make our school life not so boring.
A.
serious
B.
hard-working
C.
surprised
【单选题】_______ has been done to make our school more beautiful.
A.
Many
B.
Much
C.
A lot of
D.
A few
【单选题】To make our school beautiful, we _____ throw rubbish here and there.
A.
needn’t
B.
must
C.
need
D.
mustn’t
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