单项选择题

A．There are not accepted standards.
B．There are too many schools.
C．Decentralization brings much diversity.
D．No one has critically studied the subject.
<上一题 目录 下一题>
热门 试题

单项选择题
A．Crowded air traffic.B．The large size of airplanes.C．Mistakes by air traffic controllers.D．Bad weather.
A．Crowded air traffic.
B．The large size of airplanes.
C．Mistakes by air traffic controllers.
D．Bad weather.
单项选择题
A．She couldn’t go to Spain for holiday this summer.B．She couldn’t communicate with Spanish people very well.C．She didn’t learn enough Spanish vocabulary.D．She had few chances to speak Spanish in Spain.
A．She couldn’t go to Spain for holiday this summer.
B．She couldn’t communicate with Spanish people very well.
C．She didn’t learn enough Spanish vocabulary.
D．She had few chances to speak Spanish in Spain.
相关试题