道路竖曲线有凹形和凸形，（）是其测设要素。①切线长T②坡度i③曲线长L④外距E⑤半径R
A．①②③
B．②③④
C．①③⑤
D．①③④
参考答案：D
—My mother says that we won't go on a trip to Hong Kong Disneyland. I just can't understand.
—_______ You were looking forward to it .[ ]
A. Never mind.
B. Enjoy yourselves!
C. What a pity!
D. Don't worry about it
“二二六” * *
