警察的阶级性表现在它的( )上。
A．社会管理职能
B．文化服务
C．行政管理
D．政治 * * 职能
参考答案：D
The girl is very shy, and never speaks until ___ to.
A．spoken
B．speaking
C．speak
D．be spoken
---Did you visit the temple?
---No. We _____it, but we spent too much time shopping.
A．could have visited
B．could visit
C．needn’t have visited
D．mustn’t have visited
