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重庆大学新视野英语三级口语考试图附作文

重庆大学新视野英语三级口语考试图附作文
重庆大学新视野英语三级口语考试图附作文

Picture1眼镜一族

There are three graduation pictures we can see. Each of them has 22 students. In the primary only 4 students have glasses on their eyes, but the number of myopic (近视) students adds to 13 in the senior picture. It is worst that in the collegial

picture only 2 students don’t wear glasses.

From the picture we can see, the rate of students who are myopic is increasing sharply. This condition cannot be disregarded.

The reason why more and more students wear glasses is probably that they live and study under high pressure. In modern society, the exam-oriented education (应试教育)gives students too much stress, they have to study very hard to get high scores and to win a better future. Even during their spare time, they are sent to different kinds of agencies to learn more things. They are so tired that they have little time to rest their bodies and their eyes.

In fact, I don’t think it is fair and good for the children who are growing. They should have the right to decide their own life. They deserve a happy and healthy life.

Picture2Entering University

In this picture, a young man sits in a deck chair eisurely in his dormitory, making a phone call to his mother. He says that he has sent his dirty clothes home by EMS and wants his mother to wash those for him. How lazy he is!

What we can infer from the picture is that the boy is a fresh man in university. He has never done any housework at home before he enters university, which leads to that he cannot manage his school life at all.

In fact, this condition is quite common in modern society. Parents dote on (溺爱) their children and take very good care of their children. The only thing children need to care about

is studying. Therefore they become life idolts when they have to leave parents and live alone.

I think as a university student , we should improve the abilities in all areas. Only in this way can we have a promising and bright future.

Picture3Public Morality

In the picture, an old woman was carrying a lot of things, which seemed to be quite heavy. She was too old to carry the

two big bags and a basket full of vegetables. She walked a few steps, tired out of breath. At this time, a young man with his girl friend went by. They walked and talked , and they seemed to be very compassionate (同情) to the poor old lady. The boy said “If Lei Feng was still alive, the old lady would not be so tired to carry the things alone. Lei Feng would help her.”After saying these words, they left without doing anthing to help the old woman.

What a stupid and ironic (讽刺的) picture it is! But it does really show us the condition of our society. Nowadays more and more people complain about the disappearance of the spirit of Lei Feng. Instead of reflecting on themselves, they owe this to the social unconsciouness of helping each other. I believe that as a young person in modern society, we should take the responsibility and make ourselves good examples for people. Helping others will also make us feel happy and rich. Picture4Quality Education

Picture5 Environmental Protection

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9-2 已知非线性系统的微分方程为 (1) 320x x x ++= (2) 0x xx x ++= (3) 0x x x ++= (4) 2(1)0x x x x --+= 试确定系统的奇点及其类型,并概略绘制系统的相轨迹图。 解 (1) 奇点(0, 0)。特征方程为 2320λλ++= 两个特征根为 1,21, 2λ=-- 平衡点(0, 0)为稳定节点。 在奇点附近的概略相轨迹图: x (2) 奇点(0, 0)。在平衡点(0, 0)的邻域内线性化,得到的线性化模型为 0x x += 其特征方程为 210λ+= 两个特征根为 1,2j λ=±

1 平衡点(0, 0)为中心点。 在奇点附近的概略相轨迹图: x (3) 奇点(0, 0)。原方程可改写为 00 00 x x x x x x x x ++=≥?? +-=

2 为 0x x x -+= 其特征方程为 210λλ-+= 两个特征根为 1,20.50.866j λ=± 平衡点(0, 0)为不稳定焦点。 在奇点附近的概略相轨迹图: x 9-6 非线性系统的结构图如图9-51所示,其中0.2a =,0.2b =,4K =, 1T s =。试分别画出输入信号取下列函数时在e -e 平面上系统的相平面 图(设系统原处于静止状态)。 (1) () 2 1()r t t = (2) () 2 1()0.4r t t t =-+ (3) () 2 1()0.8r t t t =-+ (4) () 2 1() 1.2r t t t =-+ 图9-51 题9-6图 解:由系统结构图可得4c c u +=。由于e r c =-,那么4e e u r r ++=+。

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