影响客运市场运输供应的因素有：运输基础设施和（）。
A.运输力量
B.运输能量
C.运输能源
D.运输工具
参考答案：D
I like some and some .[ ]
A. milk, hamburger
B. hamburgers, milks
C. milk, hamburgers
The train had not come yet and the man ______ his watch anxiously.
A．focused on
B．glanced at
C．watched
D．confirmed
