单项选择题

【案例分析题】

据北京市劳动部门统计,我市2001年共有下岗职工25万人,2002年下岗职工人数相对于2001年增加11.2%,占同期全国下岗职工人数的8.34%。而已经拉开序幕的全国政府机构改革,1997~2005年间大约48.6%的干部被裁出国家行政机关,这些被裁干部占同期录用公务员人数的60%,而同期录用公务员39653人。
另外,2005年全市职工年均工资28348元,比上年增长17.9%,全市企业职工年均工资为26509元,比上年增长20.1%,其中:中央在京企业职工年均工资为41089元,增长23.5%,地方企业职工年均工资为20253元,降低1.5%,地方国有企业职工年均工资为18375元,增长12.7%;地方集体企业职工年均工资为11366元,增长3.1%;地方其他企业职工年均工资为22804元,降低7%,城市居民人均可支配收入达15637.8元,增长12.6%。

2002年全国下岗职工人数为()。

A.27.8万
B.50.7万
C.333.3万
D.54.9万

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单项选择题

【案例分析题】

Tens of thousands of 18-year-olds will graduate this year and be handed meaningless diplomas.These diplomas won’t look any different from those awarded their luckier classmates.Their validity will be questioned only when their employers discover that these graduates are semiliterate (半文盲).
Eventually a fortunate few will find their way into educational-repair shops-adult-literacy programs,such as the one where I teach basic grammar and writing.There,high-school graduates and high-school dropouts pursuing graduate-equivalency certificates will learn the skills they should have learned in school.They will also discover they have been cheated by our educational system.
I will never forget a teacher who got the attention of one of my children by revealing the trump card of failure.Our youngest,a world-class charmer,did little to develop his intellectual talents but always got by.Until Mrs.Stifter.
Our son was a high-school senior when he had her for English.’He sits in the back of the room talking to his friends,’she told me.’Why don’t you move him to the front row?’I urged,believing the embarrassment would get him to settle down.Mrs.Stifter said,’I don’t move seniors.I flunk(使……不及格)them.’Our son’s academic life flashed before my eyes.No teacher had ever threatened him.By the time I got home I was feeling pretty good about this.It was a radical approach for these times,but,well,why not?’She’s going to flunk you,’I told my son.I did not discuss it any further.Suddenly English became a priority(头等要事)in his life.He finished out the semester with an A.
I know one example doesn’t make a case,but at night I see a parade of students who are angry for having been passed along until they could no longer even pretend to keep up.Of average intelligence or better,they eventually quit school,concluding they were too dumb to finish.’I should have been held back,’is a comment I hear frequently:Even sadder are those students who are high-school graduates who say to me after a few weeks of class,’I don’t know how I ever got a high-school diploma.’
Passing students who have not mastered the work cheats them and the employers who expect graduates to have basic skills.We excuse this dishonest behavior.by saying kids can’t learn if they come from terrible environments.No one seems to stop to think that most kids don’t put school first on their list unless they perceive something is at risk.They’d rather be sailing.
Many students I see at night have decided to make education a priority.They are motivated by the desire for a better job or the need to hang on to the one they’ve got.They have a healthy fear of failure.
People of all ages can rise above their problems,but they need to have a reason to do so.Young people generally don’t have the maturity to value education in the same way my adult students value it.But fear of failure can motivate both.

What is the subject of this essay?()

A.view point on learning.
B.a qualified teacher.
C.the importance of examination.
D.the generation gap.

单项选择题

Solar Power without Solar Cells
A dramatic and surprising magneticeffect of light discovered by University of Michigan1researcherscould lead to solar power without traditional semiconductor-based solar cells.The researchers found a way to make an“optical51 ,” said Stephen Rand, a professor in thedepartments of Electrical Engineering and Computer Science, Physics and AppliedPhysics.
Light has electric and magnetic52 .Until now, scientists thought the effect of the magnetic field were so weakthat they could be 53 . What Rand and his colleagues found isthat at the right intensity, when light is traveling through a material thatdoes not 54 electricity, the light field cangenerate magnetic effects that
are 100 million times stronger than previouslyexpected. Under these circumstances, the magnetic effects develop strength55 toa strong electric effect.
“This could lead to a new kind of solarcell without semiconductors and without absorption to produce charge separation,” Rand said. “In solar cells, the 56 goesinto a material, gets absorbed and creates heat. Here, we expect to have a verylow heat load2. Instead of the light being absorbed, energy is stored in themagnetic moment3. Intense magnetization can be induced by intense light andthen it is ultimately capable of providing a capacitive power 57 Whatmakes this possible is a previously undetected brand of “opticalrectification,” says William Fisher, a doctoral student in applied physics. Intraditional optical rectification, light's electric field causes a chargeseparation, or a pulling58of the positive and negative charges ina material. This sets up a voltage, similar to59in a battery.
Rand and Fisher found that under the rightcircumstances and in right types of materials, the light's magnetic field canalso create optical rectification. The light must be shone througha 60 thatdoes not conduct electricity, such as glass. And it must be focused to anintensity of 10 million watts per square centimeter8. Sunlight isn't this61 onits own, but new materials are being sought that would work at lowerintensities, Fisher said.
“In our most recent paper, we show thatincoherent light9 like sunlight is theoretically almost62effectivein producing charge separation as laser light is,” Fisher said.
This new63 couldmake solar power cheaper, the researchers say. They predict that with improvedmaterials they could achieve 10 percent efficiency in converting solar power touseable energy. That's equivalent to today's commercial-grade solar cells.
“To manufacture modem solar cells, youhave to do64 semiconductor processing,” Fisher said.“All we would need are lenses to focus the light and a fiber to guide it. Glassworks for65 .It's already made in bulk, and itdoesn't require as much processing. Transparent ceramics might be even better.”
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B.fiber
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