题目

The morning had been a disaster. My tooth was aching, and I’d been in an argument with a friend. Her words still hurt：“The trouble with you is that you won’t put yourself in my place. Can’t you see things from my point of view?”I shook my head stubbornly?and felt the ache in my tooth. I’d thought I could hold out till my dentist came back from holiday, but the pain was really unbearable. I started calling the dentists in the phone book, but no one could see me immediately. Finally, at about lunchtime, I got lucky.“If you come by right now,” the receptionist said, “the denti读下图回答问题：（8分） （1）从地貌上看，①处是           ，它是由于                   作用形成的，它 主要分布在                     ，在乙图A、B、C三地中它可能在          处形成。 （2）简述乙图中A、C处河流侵蚀作用的差异及河谷特征。 A处： 位于河流的入海口附近，河流的侵蚀作用以        为主，河谷多呈    型； C处：位于河流上游河段、地处山区，河流的侵蚀作用以                 为主河谷呈      型。