问题 选择题

下图为我国东南沿海某区域等高(深)线示意图,读图完成题。

小题1:图中A山峰的高度可能是

A.278米

B.200米

C.192米

D.98米小题2:近年来,B处等深处不断向西移动,导致这一现象的主要原因

A.流域内植被破坏严重,人海泥沙沉积加强

B.河口段经常使用挖沙船清除泥沙

C.上游修建水坝,封山育林,人海泥沙量减少

D.盲目填海造陆,沿海地区红树林遭到了严重破坏

答案

小题1:A

小题2:C

题目分析:

小题1:图示等高距为100米,根据等值线“高于高值”的原则判断,A山峰的海拔应在200—300米之间。

小题2:图示B处位于河口地区,其等深线“凸低为高”反映水深较周边地区浅,主要是由于河流上游带来的泥沙在河口地区淤积的结果,而B处等深处不断向西移动反映该地区水深变深,反映了泥沙淤积减轻,故只要从河流的来沙减少分析。

点评:本题难度一般,解题的关键掌握等高线“高于高值”“凸高为低,凸低为高”的原理的应用,并结合影响河流特征的主要原因分析。

阅读理解

While I was in 9th grade, I built a circuit (电路装置) for the traffic system of our city. After getting the first prize, I got this valuable advice from my father: “Do whatever interests you, and don’t let the work challenge you, make sure you are challenging that work.” 

I have always preferred the projects which are challenging and related to real life problems. I clearly remember building a shipping program several years ago. I divided the whole project into several small sections. When I understood it clearly, I used my brainstorming skill on it, and gave some basic ideas. Then I asked my professor for help before jumping into coding (编码). At first, I did not know how to ask questions correctly and always asked the question “How do I do it?” As I kept working and discussed with my professor, I became more comfortable and those “how” questions soon turned into “what if I do this and that” types of questions.

It took me four days to write the code. The desire to solve the problem kept me sleepless all nights brainstorming in even greater details. Every time I saw my program running smoothly, I exploded with joy. I still remember the last day of my work. I was getting some problem and didn’t know what to do. At that moment, a man came in to clean. He had headphones, and he was dancing while cleaning the room. Seeing this, I burst out laughing. That moment calmed me. I regained energy and interest and started to work again, and soon I fixed the problem. 

My success in the project proved that breaking up a large problem into small parts could help find a possible solution. Discussing the problem with others was also very beneficial. Now I have gained the confidence to attempt any kind of project. 

小题1:According to the passage, the writer was interested in ______.

A.developing traffic systems

B.doing challenging projects

C.winning great prizes

D.writing different codes小题2: The writer asked the question “how do I do it” at first because ______.

A.he had no clear idea about his program

B.he was too shy to express himself

C.he wanted to be understood easily

D.he preferred this kind of question小题3: We learn from the passage that the writer’s shipping program ______.

A.would benefit people a lot

B.was done together with others

C.was difficult and needed patience

D.cost much money and energy小题4: What would be the best title for the passage?

A.Do It Yourself

B.No Pains, No Gains

C.Learning with Interest

D.Practice Makes Perfect

选择题