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

2?????????

3?????????????

4????????????

5????????98?

??,???,??????????6?25??,????????????47??

???,???28????????????????????,?7???????????????????1???????????,??????????48?50???????????,??????????????????????1500?,???????????????????????,??????????????????,??,???

??????????????????,??????90?????????,????1986??????2005???????????1.3??????????????????????4.9?????(?????? ???)

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