疟疾可见()。
A.浮脉
B.弦脉
C.芤脉
D.散脉
E.洪脉
参考答案:B
函数f(x)=x2•e-x的单调递增区间是( )
A.(-2,0)
B.(-∞,-2),(0,+∞)
C.(0,2)
D.(-∞,0),(2,+∞)
—Is your grandma still _____?
—Of course. She _____ with my aunt in the countryside.[ ]
A. live; alive
B. living; alive
C. alive; lives
D. alive; living