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

2?????3??400?????

3?????????

4???500?3??

5?????VX

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

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

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

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

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

????????,??,?,????“????”?

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

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

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

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

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

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

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

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

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

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