题目

下图是我国东北满洲里（49．5°N，117．5°E）——绥芬河（44．5°N，131°E）一线的地形剖面图，读图回答问题。（13分） （l）这条剖面线的走向是                      。（1分） （2）填出地形区名称：C               ；D               。（2分） （3）ABCD四地自然景观有明显差异，这种地域分异规律以        为基础。（1分） （4）A地草原区常可以看见斑点状的土地荒漠化现象，其原因是                       用括号里的词的正确形式填空 1. Today, we saw the parades, all the_______(perform)wore______ (colour) clothes. 2. It was really_____________(cheer) to see the performance. 3. I saw many men smoking in public places today. I think it’s_____________ (polite). It’s ____________(harm) to not only the smokers but also others. 4. I was so_____________(care) that I lost my map on the way. 5. There was a long line of___________ (visit). The line seemed to be___________(end). We had to wait for a long time.