(4)位于高纬度的有     

 

b)      读北美图回答(3分)

(1)A.点气温冬夏季的特点:             

                                       

 

B点的气候特点是                        

C处降水季节分配特点:                  

                                        

 

(2)本区降水分布规律是:              

                                        

 

(3)本区地形分三部分,西部是          

    东部是高原,山地;中部叫            。                                         

                                                                                  

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