????:1???????????:????vx

2???80?????

3?????????

4???????

5?????

?2???11??? (??????? ???? ??????)???,???“???????”?,?????,??????????

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

??????????????11??????????????,????1???????????????1???2?????????????????10?,???????????????????5???????,?44%???,????1.5?????,???????????????????????????????????????

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

?,?????????????2??????8???????,??,??????????,????????,????????,?????????????????,?????????

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

2?9??,???,???????????????“????????????,?????????,???????????,?????????”????

??,????????????????,?????,??????????????????,????????????????(???????????????????)

????:??