()开始实行武举制。
A.唐朝
B.隋朝
C.宋朝
D.三国时期
参考答案:A
解析:武举制开始于唐朝。
China has a growing number of middle-class parents who _____ for years to get their only child into a top school.
A.had been saved
B.have saved
C.had saved
D.have been saved
建设管理单位必须在事故发生后()小时内向部建设管理司提出书面报告。
A.12小时
B.24小时
C.48小时
D.72小时