数据：2，1，0，3，4的平均数是( )
A．0
B．1
C．2
D．3
答案：C
I will tell you what trouble I had ______ your house on the way I came here.
A．find
B．found
C．finding
D．founded
用冰袋给高热病人降温属于
A．蒸发散热B．传导散热C．对流散热D．辐射散热E．不感蒸发散热
