小题1:Visitors can’t enter the museum without the guard’s p_____________ .

小题2:The head of the railway station a___________ to the passengers for the late arrival of the train.

小题3:For a better environment, many old buses ought to be r          with new ones using electricity.

小题4:It’s c______________ of you to bring my umbrella when it is going to rain.

小题5:It is good m_____________ to give your seat to an old man on the bus.

小题6:Be a little p_____________ . I will be ready in a few minutes.

小题7:Children are always full of c_______________; they want to know everything. 

小题8: Children should not be allowed to watch the v____________ movies which are full of fierce fights.

小题9:She listened with a p____________ expression on her face because she couldn’t understand what the speaker was saying.

小题10:Doctors say many diseases can be p_____________ from spreading by washing our hands.

世界贸易组织的基本原则有( )。

A．非歧视原则
B．市场开放原则
C．公平竞争原则
D．贸易政策法规透明度原则