It’s the first time I __ to see you this year.
A.had come
B.came
C.have come
D.come
答案:C
若f(x)=lnx5+e5x,则f′(1)等于( )
A.0
B.5+5e5
C.e5
D.5e5
煮熟的猪肝罐头