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

2???????150

3??????????

4???400??

5???????????

?????12????????22???? ??:???????????????“??????”:???????????????

????????? ???

“????????????????,?,??,??????????????”???“90??????????????????”??????????????“?????????????????”?“?????”???????????

“?”“??”……???“???”?,?????????“??????????????????”??????????2000??????????????????????????????,?,?????????????,?“?”?

12?????16????????????????????????????,?????????????????“??????????????????????????????”????“??”??????????????????? ???????? ??????????????

???,??????????????????,?????,???????????????????“???”?

“?,?,???????????????????,????”??,??

12?????16???,????????????????????? ?????? ?

??????????????,??,??“???????????”??????????,??

“????,?????????????????????2000??,???????????????”?,???????

??????????????????????????,???????????

“???????????‘DNA’,????????,?,??”??,?????,?????????????????????????????????????????????????,??????????

12???????????????16?????,??T???????????????????????? ??? ??

????,????????T?????????????????????????????,???“?”,??T???????????????,????????20???????????????????????????????????,???T?????????????

“??????????240?????,???”??????????????????????,?????????????????,????????,“??”????,?????(?)

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