According to this passage, what should you do after 40

A．Change your life style.

B．Take things easy.

C．Challenge the things you didn’t do well before.

D．Find out what you are good at.

安全文明生产的措施有（）。

A.施工人员必须经过岗前安全技术培训

B.下管时要有专人指挥，防止管道伤人

C.施工人员必须戴安全帽

D.电焊、气焊严格按工艺要求操作