单项选择题

A．three months
B．six months
C．one year
D．three years
<上一题 目录 下一题>
热门 试题

填空题
values
单项选择题
A．operated privatelyB．operated by the governmentC．part of government technical and business collegesD．all of the above
A．operated privately
B．operated by the government
C．part of government technical and business colleges
D．all of the above
相关试题