????:1????????????:???????????

2???400??

3???????wx

4?94??95????

5??????95?98

??????12????28????(? ?)28????,“?2000”??,????????

12??28????????????,??????????????????????????,“???2000”???

“??2000”?,?136????????????????????????53????????????????????????10???,????8???,????????????????????,?????80???????????????????????

????????????,??2000????,?????????????20??,????????

??,??,?95%,??(?)

????????????:??????????????????