八年级学生小万不认真学习，经常旷课、逃学，老师批评他，他却说：受教育是我的权利，我想上学就上学，不想上学就不上学，别人管不着。小万的言行：[ ]

A．是正确行使公民权利的表现       

B．没有珍惜受教育的机会   

C．没有履行受教育的义务           

D．符合我国法律的有关规定 

In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.
Open Shortest Path First(OSPF) is a (66) routing algorithm that (67) work done on the OSI IS-IS intradomain routing protocol. This routing, as compared to distance-vector routing, requires (68) processing power. The Dijkstra algorithm is used to calculate (69) OSPF routing table updates only take place when necessary, (70) at regular intervals.

A．routes

B．road

C．distance

D．cost