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

2??????????

3????????

4?????

5?????24????app

?2??3????????? ??,??????,2????3??20???????????????4????20?,?????????????????????????????5~6????7~8?????????,??????,?????????????????????6~8????9~10??????????????????????????????????????????????????????????????7~8????????9????,??????????????9?????????10???

2??????????4??????20????????????5??????20?,?????????????????????????????5~6??????????7~8??,???????6~8????????????????????9~10?????;?????????????????????????????????????????????????7~8?????????9?,???????????????9???10???????

????

????:

1???????????????,??;

2?????????????????????????????,???????????????????????;

3?????????,???????????;

4????????,???

???:??????