?? ???????? ????????????????
![](https://image.chezhanri.com/2019/0522/20190522113757728.jpg)
????:1???????????:?????????????
2???????????
3??????
4???????????
5?????
???????7????22??? (????????????? ?????????)7???????19?????????????????????????20???????????40?,??????????20????????12???,????????????12?????????????31???,??????1???,????,??12????DNA?????,??
21???,???????,??,????????????????
??,?????,??????1630??205??????????63???6??????21?????????????,?????????????200????????????????200???????????????????100??,???????6000????????(????????)?
![](http://i2.chinanews.com.cn/simg/ypt/2024/240722/b140802d-9365-4b59-b670-520fdf80780a_zsite.jpg)
??????????????????,????????,????????????????????????????????700??????????,??1500????,?10???,???????????????????,??
???????????,??30???????????62????????????,?????????????,??????????????????,??,??
?????,??????????????,??,?????????????,?????????,?????????????????????????????????????????,??????
“????????????????????????,???????????”????
?7?,??,???5??14???????????,?,????????????????????????????????,???
20?????????????????????????,????????????????,??
??,?,????????130??????,????????????????3??,??????20???23??????????????,???
????,?,??????,?????,??,?????????,??????????????????????????????????????????,????,????????(??)
???:??????????????