????:1???????100?????:???????

2???????

3???t???

4????????????

5??????

???2?????????????12?? ??????????12??????????,??????????

2????????12?????????????????????,???????????????,???? ?? ??????????????? ?????????????

?,??????????,?98%?????,??????????????????4?????“??????”,“?”???

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

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