He is a little bit mysterious these days. Nobody in our company knows exactly.

A．what he is working on

B．what is he working on

C．what did he work on

D．what was he working on

位于上海的中共一大会址纪念馆吸引了众多的游人前来参观，那么，游人在纪念馆里看不到的内容有  （   ）

A．浙江嘉兴南湖游船

B．陈独秀当选为中央局书记

C．李大钊参加一大时的照片

D．中 * * 党成立