--- Lydia, what did our headteacher say just now?

--- Every boy and every girl as well as the teachers who       to lead the group

      asked to be at the school gate before 6:30 in the morning.

A．is; is

B．are; are

C．are; is

D．is; are

政府有关部门应制定综合性的( )，确保重大危险源与居民区和其他工作场所、机场、水库、其他危险源和公共设施安全隔离。

A．土地实用方案
B．规划方案
C．应急救援体系
D．管理法规