题干
Noticing some passers-by gathering on the road, Jill looked forward _______ what was the matter.
A：to find out
B： to finding out
C：only to find out
D：finding out
答案(点此获取答案解析）
A
人，其中高级职称
人，中级职称
人，现抽取
人进行分层抽样，则各职称人数分别为（ ）
