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  22．(8分)

   (1)                                                                         

   (2)                                                                         

   (3)                                                                         

  21．(7分)                                       

   (1)                                                                     

   (2)                                                                     

六、綜合能力題(本大題3小題，共24分)

  20．(8分)

   解：(1)

   (2)

   (3)

  19．(7分)

   解：(1)

   (2)

五、計算題(本大題2小題，共15分)

  18．(8分)

(1)                         

   (2)                          

   (3)                                                                         

   (4)                                                                       

17．(8分)                           (1)

  (2)                               

(3)                       

(4)                                

                                                                      。

③                          

  16．(8分)

(1)                            

(2)          

(3)          

(4)①              ②