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

2????????

3????????

4????????

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

???????????8????????????8??????????????? (??????? ???)????????????,????,??????????????????,????

7?,?????????????“????”????????????,???????(????)???,??“??????????????????????”?

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?????????,????????,?????5?,?30????????“??”???,?????????????????20??50??????????????????????60??????????,???????????????,????“??”??????????????

1977????,???????,?????“??”??????(????????????)???,???,????????70%?

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???,??????,????3??????????????????5?????????????????????,???????;??,8?????????????????????10????????????“????,?????????????”

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