脾胃虚弱,气血不足,脉管不充,亦无力鼓动时的脉象是()
A.伏脉
B.牢脉
C.迟脉
D.缓脉
E.沉脉
参考答案:D
In some areas, quite a lot of students have to work at a very early age,
as they usually don'thave money ____ go to school. [ ]
A. enough; for
B. enough; to
C. much; couldn' t
D. many; can't
下列级数中属于条件收敛的是______
A.
B.
C.
D.