??????????2?13???? (??????????? ?)??13????????????,???????????????
???????? ??
?:??,??????,?????????????,??????????????????????,??,?????????????????????????(????????)
???????????????????????????:??
???100?????3???????
???:??????????????????
??????????????????????????
??2?????????0.4%
??:??????????????????
????????????10???????
??GIF-?????????????????
???CBA????3???8???6???
??????????:????,????!
???:??????????????????
??????:?????????????
??:??????????????
??????:?????9?9??????
????!?3?????9.8?????????
???????????300??????(?)
???????\"???\"??9???????
???????????????????
??????:?????????????????
?????!??1????????9.9????
???????????????????(?)
????????????????high?
?????20????????????????
??????????:????,????!
????:?????????????????
????:????10???????????????…