在施工总承包管理模式中，施工总承包管理单位的任务包括______。 A．整个项目的施

Modern industrial society grants little status to old people. In fact, such a society has a system of built-in obsolescence. There is no formal system for continuing our education throughout our life in order to keep up with rapidly changing knowledge. When our education and job skills have grown obsolete, we are treated exactly like those who have never gained an education or job skills and are not encouraged or given the opportunity to begin anew.As a society becomes more highly developed, the overall status of older people diminishes. Improved health technology creates a large pool of old people, who compete for jobs with the young. However, economic technology lowers the demand for workers and creates new jobs for which the skills of the aged are obsolete, forcing older people into retirement. At the same time, young people are being educated in the new technology and are keeping pace with rapid changes in knowledge. Finally, urbanization creates age-segregated neighborhoods. Because the old live on fixed incomes, they must often live in inferior housing. All these factors — retirement, obsolete knowledge and skills, inferior standards of living — lower the status of the aged in society.A century ago, when one could expect to live only to 50 or so, the life span more or less coincided with the occupation and family cycle. But today the average life span allows for fifteen to twenty years of life after these cycles. It appears that our life span is outpacing our usefulness in society.

It can be deduced from this passage that one should________.

A．learn new skills

B．be open-minded

C．have a good personality

D．keep pace with the times

阅读理解。

Dear Mr. Zhu,

     I am writing to your magazine's "Teenagers Now" column (专栏) to ask for some help with my

16-year-old son. At the moment, he refuses to do almost everything his mother and I ask him to do. He

is our only child and we treat him very well. His grandparents buy him many things, and yet he is still rude

to us. He refuses to spend time with us or do as we tell him. Sometimes he acts as if he doesn't even love

us at all.

     Now he refuses to do his homework, and instead insists on wasting his time watching DVDs and

listening to foreign music. I cannot understand this music, but I don't like it. He also spends too much time

in Internet cafes, where he either plays games or chats online. He is wasting valuable time during this

important period in his life!

     What am I to do? At present, to prevent making his mother unhappy with an argument, I am allowing

him his freedom. However, I am worried that if I keep allowing him to do what he wants, he may fail at

school, or worse.

     How can I help my son without harming our relation ship?

                                                                                                       Yours,

                                                                                                              Liu Zhenhua

1. What's Mr. Zhu's job?

A. A teacher.

B. A magazine columnist.

C. A youth worker.

D. A doctor.

2. From the passage, we can know that Mr. Liu's son is _____ to his parents.

A. friendly

B. thankful

C. polite

D. rude

3. What does Liu Zhenhua write to Mr. Zhu for?

A. To blame his son.

B. To ask for help with his son.

C. To say something about his son.

D. To complain to him about his son.

4. Mr. Liu's son always spends his time _____.

A. doing his homework

B. playing games online

C. chatting with his parents

D. doing everything his parents asking him to do

下列属于随人因子的有（）

A.性别

B.投保方式

C.无赔折扣

D.车龄

抽油机检查的“7631”指什么？

蛋白质工程中，直接需要进行操作的对象是（）

A.氨基酸结构

B.蛋白质的空间结构

C.肽链结构

D.基因结构