1．将高原与相应的地表形态用线连起来：（8分）

       A．青藏高原                                           ①千沟万壑、支离破碎

       B．云贵高原                                           ②地面坦荡、地势平坦

       C．黄土高原                                           ③雪山连绵、冰川广布                    

       D．内蒙古高原                                        ④峰岭众多、地面崎岖