在操作甲板起重机的工作过程中，发生紧急情况时，应按（）。

A、吊臂角度限位

B、吊钩组合限制

C、紧急按钮

D、以上都对

Not only ______ in photography, but _____ an amateur courses to update my skills.

A．I am interested; I took

B．interested I am; did I take

C．I am interested; did I take

D．am I interested; I took