在进行隧道总体平面、纵断面和横断面设计时，应尽量采用直线隧道，且隧道应有一定的坡度。（）
参考答案：对
情景交际，选择合适的选项填在横线上。
(Xiao Ming----X Father---F)
X: 1______. Something is wrong with my watch.
F: Don't worry. 2______
X: Here you are.
F: Do you have a knife?
X: Yes, 3______. Where is it?
F: Oh, there!
X: Yes, there it is. 4______.
F: Xiao Ming, you must look after your things. Now your watch is OK.
X: Thank you, Dad.
F: 5______.
A. That's all right.
B. Here you are.
C. Dad, could you help me?
D. But I can't find it.
E: Let me have a look, please.
