--Hello, Tom. Long time no see. Where were you?

--Oh, not only my parents but also I     Paris for a month.

A．has gone to

B．stayed in

C．has been in

D．have been in

HSE管理体系建立和运行的依据是（）。

A.方针和战略目标

B.组织机构

C.领导和承诺

D.计划