— I think teenagers should be allowed to have part-time jobs.

— _____. Studying is more important for them. [ ]

A. I think so

B. I disagree with you

C. Me, too

D. No problem

建设工程安全生产的原则主要包括（）。

A.管生产必须管安全

B.事故处理"四不放过"

C.安全具有否决权

D.职业安全卫生三同时

E.安全第一，预防为主