关于在地图上识别方向的一些叙述，正确的是

A．经线指示东西，纬线指示南北

B．面对地图，通常是“上北下南，左东右西

C．一个人站在北极，他的四面都是北方

D．在有指向标的地图上，指向标箭头通常指示北方

完成句子

根据句意及括号内的汉语提示，完成句子。（每空一词）

小题1:Low-carbon is a popular word nowadays.  We should make a great contribution to__________(保护)the environment.

小题2:There are 56_______(民族)in China.  We are like a big family.

小题3:There will be a ________(强) Wind in the northeast of china.

小题4:GPS is one of the greatest__________(发明) in the world.

小题5:Bolt is a magic__________(奔跑着) in the world I think.

小题6:I’m Sorry to tell you that the situation has become _______(坏) than before.