_______he couldn't understand was_________more and more students showed interest in the computer games.  

A．What； because

B．That, what

C．What； why

D．Why； that

船舶法规系统中配套的法规不包括（）

A、船舶登记条例

B、船舶和水上设施检验条例

C、小型船舶管理条例

D、海船船员值班规则