You are handling a mooring line and are instructed to Check the line.What should you do（）.

A.Ensure the bight is not fouled by taking up slack

B.Pay out the line smartly and keep it free for running

C.Secure the line by adding more turns

D.Surge the line so it maintains a strain without parting

下列哪种教学设计方法既强调充分体现学生的主体地位，又强调充分发挥教师主导作用（）

A.建构主义环境下的教学设计

B.传统教学设计授课

C.“学教并重”的教学设计

D.以“教学”为中心的教学设计