Mr. Lee, who            as a carpenter for over 10 years, is now a very famous statesman in this country.

A．has worked

B．had worked

C．worked

D．works

若仅考虑强度和吃水差，则油船装货大致的顺序是（）。

①首部油舱；②各油舱均衡装载；③装中部货舱。

A．①②③

B．③①②

C．①③②

D．②①③