题目内容

药物代谢后,其药理活性均降低或失去活性。()

A. 对
B. 错

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The Yuan ___ established its capital in Dadu, now Beijing.

A.Dynasty
B.Age
C.Year
D.Majesty

___ is a system of timekeeping that defines the beginning and length and divisions of the year.

A.Time
B.Calendar
C.Agenda
D.Schedule

___ lines will never meet no matter howfar extended.

A.Cross
B.Alternate
C.Parallel
D.A web of

If something has ___, it consists of things which are different from each other.

A.similarities
B.variety
C.various
D.traits

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