若关于x的一元二次方程x2+mx-2m=0的一根为1，则m的值是______．
把1代入方程有：
1+m-2m=0
m=1．
故答案为：1．
以下选项中可作为C语言合法常量的是______。
A．-80.
B．-080
C．-8e1.0
D．-80.0e
The maximum number of passengers a T-Boat may carry（）.
A.is stated on the vessel's Certificate of Inspection
B.is the number authorized in the Navigation Rules
C.depends on the number of lifejackets you carry
D.is the number authorized by your license
