倾斜井巷运输必须坚持（）的制度。
A、只准行车
B、行人又行车
C、行车不行人
D、行人不行车
参考答案：C, D
—Eric, are your parents angry about your English in this exam?
—Oh, of them is angry. They just told me to get better grades next time.
A．none.
B．both.
C．neither.
D．all.
价规规定旅客凭客票办理行李托运有何规定？
