While teaching students, teachers should take into consideration ______ students develop at different rates.

A．the fact that

B．because

C．as long as

D．in spite of

设置船长夜航命令簿的目的是（）。Ⅰ．为了保证船舶夜间航行安全；Ⅱ．为了保证船舶夜间锚泊安全；Ⅲ．为了保证货物装卸安全；Ⅳ．为了正确地执行航次计划。

A.Ⅰ～Ⅲ

B.Ⅰ、Ⅳ

C.Ⅰ～Ⅳ

D.Ⅰ、Ⅱ、Ⅳ