下列监理文件档案中，要求监理单位长期保存的有( )。

A．监理规划

B．监理实施细则

C．监理月报表中有关质量问题

D．监理会议记要中有关质量问题

E．监理部总控制计划

() people went to the concert which was held in People's Square () the night of May Day.

A. Thousands of; in

B. Thousand; on

C. Many thousand; in

D. Thousands of; on