--- Have you heard that Jenny, along with her classmates,        to Harbin for the winter vacation?

--- Really? No wonder I haven’t seen her these days.

A．had gone

B．have been

C．has gone

D．have gone

根据《国家危险废物名录》环境保护部令第39号附录，“豁免内容”（）。

A.指列入本目录危险废物的名称

B.指可不按危险废物管理的环节

C.指可不按危险废物管理应具备的条件

D.指可不按危险废物管理的内容