Scientists find that hard-working people live longer than average men and women. Career women are__1___ than housewives．Evidence shows that __2_ are in poorer health than the job-holders．A study shows that _3___ the unemployment rate increases by 1%，the death rate in-creases correspondingly by 2%．All this comes down to one point：Work is helpful to health．
Why is work good for health? It is because work ___4_ people busy, _5__ loneliness and solitude . Researches show that people feel unhappy，_6__ and lonely when they have nothing to do．Instead，the happiest are those who are _7___．Many high achievers who love their careers feel that they are happiest when they are working hard . Work serves as __8___ between man and reality．By work，people_9__ each other．By collective activity，they find friendship and warmth．This is helpful to health．The loss of work __10__ the loss of everything．It affects man spiritually and __11_ him liable to disease．
__12__ ，work gives one a sense of fulfillment and a sense of _13__ ．Work makes one feel his value and status in society．When __14__ finishes his writing or a doctor successfully __15__ a patient or a teacher sees his students __16_ ，they are happy ___17__ ．
From the above we can _18__ to the conclusion that the more you work, _19___ and healthier you will be．Let us work hard，study well and __20__ a happy and healthy life．
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【小题1】C
【小题2】D
【小题3】B
【小题4】B
【小题5】A
【小题6】A
【小题7】B
【小题8】A
【小题9】C
【小题10】B
【小题11】A
【小题12】B
【小题13】C
【小题14】D
【小题15】D
【小题16】C
【小题17】A
【小题18】B
【小题19】A
【小题20】B
解析试题分析：本文的主要内容是研究表明工作会使人健康和快乐，工作给了人满足感和成就感，让我们努力工作，好好学习，过一种快乐和健康的生活。
【小题1】根据Scientists find that hard-working people live longer than average men and women.故选C。
【小题2】根据than the job-holders．故选D。
【小题3】 这里想说什么时候失业率提高到了1%，死亡率就相应提高到了2%，故选B。
【小题4】这里想说工作使人繁忙，远离孤独和幽静，故选B。
【小题5】这里想说工作使人繁忙，远离孤独和幽静，故选A，away from远离。
【小题6】根据feel unhappy，以及 and lonely when they have nothing to do．故选A，worried担心的。
【小题7】根据It is because work keeps people busy,故选B。
【小题8】根据between man and reality，故选A，a bridge桥。
【小题9】这里想说通过工作，人们接触到彼此，故选C，come into contact with 接触到。
【小题10】这里想说失去工作意味着失去一切，故选B，means意味着。
【小题11】这里想说使得他易受疾病的困扰，故选A，makes使。
【小题12】这里想说，除此之外，工作给了人满足感和成就感，故选B，Besides此外。
【小题13】这里想说，除此之外，工作给了人满足感和成就感，故选C，achievement成就。
【小题14】根据finishes his writing，故选D。
【小题15】根据or a doctor successfully，故选D。
【小题16】根据or a teacher sees his students，故选C，grow成长。
【小题17】这里想表达他们的快乐是无法用语言表达的，故选A，beyond words无法用语言表达。
【小题18】这里想说从上面可以得出这样的结论，故选B，come to the conclusion得出结论。
【小题19】这里想说你工作的越多，你就会越健康，越快乐，故选A。
【小题20】这里想说让我们努力工作，好好学习，过一种快乐和健康的生活，故选B，lead a ... life是固定用法，意思是过......的生活。
考点：日常生活阅读类短文完形填空
点评：答题前一定要略读全文，把握文章要表达的主题，注意前后句与句，段落与段落之间的关系。答题中，一定要认真分析，注意选项与上下文的关系，与前后单词的关系。对于一时没有太大的把握的题可以放到最后再来完成，因为有时答案可以从下文内容体现出来。答完后再通读一遍文章，看看所选选项能不能是语句通顺，语意连贯。
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Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”，said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
Which of the following is true of Jae Kwon?
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
Jae Kwon gave examples in Paragraph 4_________.
A. to show chemical batteries are widely applied.
B. to introduce nuclear batteries can be safely used.
C. to describe a nuclear-powered system.
D. to introduce various energy sources.
Liquid semiconductor is used to _________.
A. get rid of the radioactive waste
B. test the power of nuclear batteries.
C. decrease the size of nuclear batteries
D. reduce the damage to lattice structure.
According to Jae Kwon, his nuclear battery _______.
A. uses a solid semiconductor
B. will soon replace the present ones.
C. could be extremely thin
D. has passed the final test.
The text is most probably a ________.
A. science news report B. book review
C. newspaper ad D. science fiction story
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People diet to look more attractive. Fish diet to avoid being beaten up, thrown out of their social group, and getting eaten as a result. That is the fascinating conclusion of the latest research into fish behavior by a team of Australian scientists.
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A. faces danger B. has breeding rights
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A. the fish beaten up B. the fish found out
C. the fish fattened up D. the fish driven away
67 The experiment showed that smaller fish ____.
A. fought over a feast B. went on diet willingly
C. preferred some extra food D. challenged the boss fish
68. What is the text mainly about?
A. Fish dieting and human dieting.
B. Dieting and health.
C. Human dieting.
D. Fish dieting.
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A.The tools he uses.
B.His ways of learning.?
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C.the importance of thinking
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