在飞机离港前2小时申请退票应收取票价的( )手续费。
A.10%
B.20%
C.30%
D.50%
参考答案:B
已知y=(2m-1)xm2-3是正比例函数,且函数图象经过第一、三象限,求m的值.
-How can I go to the supermarket, Paul?
- bike. It's not far from here.[ ]
A. On
B. By
C. In
D. With