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【单选题】
下列关于粉碎方法的叙述中,错误的是A.
氧化性药物和还原性药物必须单独粉碎
B.
贵重药物应单独粉碎
C.
含共熔成分时，不能混合粉碎
D.
粉碎过程应及时筛去细粉以提高效率
E.
性质及硬度相近的药物可混合粉碎
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A.
was not long enough for you
B.
are not very long for you
C.
is not long enough for you
D.
will be too long for you
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A.
should
B.
might
C.
can
D.
must
【单选题】-- Shall I wait here for three hours? --Yes. Three hours ___to wait for such a doctor.
A.
are not very long for you
B.
is not long enough for you
C.
was not long enough for you
D.
will be too long for you
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