????:1?????????:????????

2?????vx

3????????

4?95?98?????

5?????????

??????2????????????4?????????? (??????)???,????????????????????,??“??”?(?,?????????)???????????????????????

1????????23????????,?,???? ???? ????????????

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

???,“90??????????”???????????????“????,????,????80????”?????,?,??????????????,“????????,????????????,?”?

“00?”??,??????“?”?????????????,???19.9?????????????????

1?23?,??????????????? ?????? ???

“?????????29.9??????????????19.9??????????????????15??????????????……?????????????????”?,????????,???????50???

???,?????????????????????????????????????????13????????????????:“????,????????,??????????,????????????????????,????,??????????????”

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

???????????????????,?????“???”??,???,?????????(????)

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