接受旅游团或海外旅行社预定，制定和下达接待计划，并可提供全程陪同导游服务的旅行社是（）
A、地接社
B、接待社
C、组团社
D、海外领队
参考答案：C
I ______along the street looking for a place to park when the accident______ .
A．went; was occurring
B．went; occurred
C．was going; occurred
D．was going; had occurred
屋面防水层采用刚性保护层应设分格缝，与防水层之间应设置隔离层。 ( )
