?? ???????:????
![](http://n.sinaimg.cn/news/transform/601/w1859h1142/20180919/jH2D-hkhfqns8681204.jpg)
????:1???????:???????
2???????
3?????????????
4??????????????
5???????
????(???)? ???
???????????? ?
?????????????(?)????????????? ???
????????????????????? ??????????
????? ???
??????(?????)????? ???
??:???