根据规定，下列哪些是驾驶员的停泊值班职责（）。Ⅰ．督促值班水手按时升降国旗、开关灯、显示有关的号灯号型；Ⅱ．以适当的时间间隔巡视全船；Ⅲ．检查舷梯、锚链、跳板及安全网；Ⅳ．及时调整系缆，特别是潮差大的泊位。

A.Ⅰ～Ⅳ

B.Ⅰ～Ⅲ

C.Ⅰ、Ⅱ、Ⅳ

D.Ⅱ、Ⅲ、Ⅳ

给下面对话排序。

A. I like PE. We have two PE lessons a week.

B. Nice to see you, too, Helen.

C. We have three PE lessons a week. We have four Art lessons, too.

D. Five. What subject do you like?

E. Hello , Liu Tao. Nice to see you.

F. How many Maths lessons do you have a week?

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