题目内容
（请给出正确答案）
The writer sees education as______.
A. a means of providing job security and financial security and a means of meeting a country's demands for technical workers
B. a way to broaden one's horizons
C. more important than finding a job
D. an opportunity that everyone should have
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更多“The writer sees education as__…”相关的问题
The writer suggests that when talking to others,the speaker should ______.
A．know that listeners will show him that they understand his words
B．express himself clearly even when he sees signs of understanding
C．notice listener's signs of understanding
D．look directly into his listener's eyes
Why is work good for health？ It is because work keeps people busy away from loneliness. Researches show that people feel unhappy, worried and lonely when they have nothing to do. Instead, the happiest are those who are busy. (76) Many high achievers who love their careers feel that they are happiest when they are working hard. Work serves as a bridge between man and reality. By work people come into with each other. By collective activity they find friendship and warmth. This is helpful to health. The loss of work means the loss of everything. It affects man spiritually and makes him ill.
Besides, work gives one a sense of fulfillment and a sense of achievement. Work makes one feel his value and status in society. When a writer finishes his writing or a doctor successfully operates on a patient or a teacher sees his students grow, they are happy beyond words.
(77) From the above we can come to the conclusion that the more you work the happier and healthier you will be. Let us work hard and study and live a happy and healthy life.
The underlined word "average" in Paragraph 1 means ______.
A．healthy
B．lazy
C．ordinary
D．poor
What's the main idea of para. 6？
A．Adults can continue their learning
B．Most continuing education classes are in the evening
C．Adults have many opportunities to continue their learning
D．Classes are held for working people
(80) Other experts feel that giving the worker freedom to do his job in his own way is important. There is no doubt that this is true. The problem is that this kind of freedom cannot easily be given in the modem factory with its complicated machinery which must be used in a fixed way. Thus, although freedom of choice may be important, usually very little can be done to create it.
Another important consideration is how much a worker contributes to the product he is making. In most factories the worker sees only one small part of the product. Some car factories are now experimenting with having many small production lines rather than a large one, so that each worker contributes more to the production of the cars on his line. It would seem that not only is degree of the worker's contribution an important factor, therefore, it is also one we can do something about. To what extent does more money lead to greater productivity？ The workers themselves certainly think this is important. But perhaps they want more money only because the work they do is so boring. Money just lets them enjoy their spare time more. A similar argument may explain demands for shorter working hours. Perhaps if we make their jobs more interesting, they will want neither more money nor shorter working hours.
Varied jobs, in writer's opinion, will ______.
A．offer greater productivity
B．drive workers to work harder
C．make workers more productive
D．make worker's life more enjoyable, but do not make them more hardworking
本题使用WAGEI.RAW中的数据。
(i)利用方程(7.18)估计在Pdw=12.5时的性别差异。并与educ=0时估计的性别差异相比较。
(ii)做一个用以得到式(7.18)的回归，但用female·(educ-12.5)取代female·ed huc。你现在如何解释female的系数？
(ii)第(ii)部分中female的系数是统计显著的吗？与式(7.18)相比较并进行评论。
下面这个模型是比德尔和哈默梅什(BiddleandHamermesh，1990)所用多元回归模型的一个简化版本，原模型研究睡眠时间和工作时间之间的取舍，并考察影响睡眠的其他因素：
sleep=β0+β1totwrk+β2educ+β3age+u
其中，sleep和totwrk都以分钟/周为单位，而educ和age则以年为单位。(也可参见计算机练习C3。)
(i)如果成年人为工作而放弃睡眠，β1的符号是什么？
(ii)你认为β2和β3的符号应该是什么？
(iii)利用SLEEP75.RAW中的数据，估计出来的方程是
sleep=3638.25-0.148totwrk-11.13educ+2.20age
n=706,R2=0.113.
如果有人一周多工作5个小时，预计sleep会减少多少分钟？这是一个很大的舍弃吗？
(iv)讨论educ的估计系数的符号和大小。
(v)你能说totwrk，educ和age解释了sleep的大部分波动吗？还有什么其他因素可能影响花在睡眠上的时间？它们与totwrk可能相关吗？
