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

2???????

3????????

4?????????

5?????????????

????2????????7? ??????????6????,?10????????????

??,???6???????????4??????????????????????????,???????????,?????????????????????????????“????????????????”????,??????9??????1??????????????????????????????????????

??“X”?,??,??12??

???,????????????6??????????2???????????37???????????????????,??3???16????????????????????????,?????????????????????????????????????????????????

??????????“??????????”????????????,??????????????????9??????(??) ????:????