单项选择题

In the United Kingdom, police officers are not allowed to join _________ or to go on strike.

A．a trade union
B．a choir
C．a political party
D．a club
<上一题 目录 下一题>
热门 试题

单项选择题
The direct reason for specialization is ______.
A．the development in communication
B．the growth of professionalisation
C．the expansion of scientific knowledge
D．the splitting up of academic societies
单项选择题
The author writes the development of geology to demonstrate ______.
A．the process of specialization and professionalisation
B．the hardship of amateurs in scientific study
C．the change of policies in scientific publications
D．the discrimination of professionals against amateurs
相关试题