If it tomorrow， we to the Great Wall.

　　A. little B. a little C. few D. a few 

　　A.making a hole on a big piece of wood

　　B.putting the smaller stick into the hole

　　C.turning the stick hard for a while

　　D.all above together

　　A.for about two thousand years

　　B.for about two hundred years

　　C.since people began to use fire for cooking

　　D.since people used the heat from the sun

　　A.electric fire starters are widely used

　　B.people havent used matches since they had electric fire starters

　　C.today there are only two ways to make fire

　　D.some forest fires happen from lighting

　　A.a，b，c，d，c

　　B.b，c，a，e，d

　　C.c，d，b，a，e

　　D.d，a，c，b，e