Physicists were thinking far ahead their time in a very intelligent way. They saw what was - 试题答案网问答

第1题

He looked thin and hungry ______ his eyes were determined. A．or B．but C．for D．

He looked thin and hungry ______ his eyes were determined.

A．or B．but C．for D．either

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第2题

That "behind the thin marble front were concrete and steel" suggests that______.A．modern r

That "behind the thin marble front were concrete and steel" suggests that______.

A．modern realistic commercialism existed behind the luxurious appearance

B．there was a fundamental falseness in the style. and the appeal of the caf6

C．the architect had made a sensible blend of old and new building materials

D．the cafe was based on physical foundations and real economic strength

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第3题

What do we know about the young, educated Samoa women from the passage？A．They were less li

What do we know about the young, educated Samoa women from the passage？

A．They were less likely to get promotion.

B．They preferred attractively thin bodies.

C．They were more likely to gain weight.

D．They held positive views of larger bodies.

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第4题

Physicists' recent investigations of the decay of the vacuum, as described in the passage,

most closely resemble which of the following hypothetical events in other disciplines？

A．On the basis of data gathered in a carefully controlled laboratory experiment, a chemist predicts and then demonstrates the physical properties of a newly synthesized polymer.

B．On the basis of manipulations of macroeconomic theory, an economist predicts that, contrary to accepted economic theory, inflation and unemployment will both decline under conditions of rapid economic growth.

C．On the basis of a rereading of the texts of Jane Austen's novels, a literary critic suggests that, contrary to accepted literary interpretations, Austen's plots were actually metaphors for political events in early nineteenth-century England.

D．On the basis of data gathered in carefully planned observations of several species of birds, a biologist proposes a modification in the accepted theory of interspecies competition.

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第5题

The word laser was coined as an acronym for Light Amplification by the Stimulated Emission

of Radiation. Ordinary light, from the sun or a light bulb, is emitted spontaneously, when atoms or molecules get rid of excess energy by them selves, without any outside intervention. Stimulated emission is different because it occurs when an atom or molecule holding onto excess energy has been stimulated to emit it as light.

Albert Einstein was the first to suggest the existence of stimulated emission in a paper published in 1917. However, for many years physicists thought that atoms and molecules always were much more likely to emit light spontaneously and that stimulated emission thus al- ways would be much weaker. It was not until after the Second World War that physicists began trying to make stimulated emission dominate. They sought ways by which one atom or molecule could stimulate many others to emit light, amplifying it to much higher powers.

The first to succeed was Charles H. Townes, then at Columbia University in New York. Instead of working with light, however, he worked with microwaves, which have a much longer wavelength, and built a device he called a "maser" for Microwave Amplification by the Stimulated Emission of Radiation. Although he thought of the key idea in 1951, the first maser was not completed until a couple of years. Before long, many other physicists were building masers and trying to discover how to produce stimulated emission at even shorter wavelengths.

The key concepts emerged about 1957. Townes and Artyur Schawlow, then at Bell Telephone Laboratories, wrote a long paper outlining the conditions needed to amplify stimulated emission of visible light waves. At about the same time, similar ideas crystallized in the mind of Gordon Gould, then a 37-year-old graduate student at Columbia, who wrote them down in a series of notebooks. Townes and Schawlow published their ideas in a scientific journal, Physical Review Letter, but Gould filed a patent application. Three decades later, people still argue about who deserves the credit For the concept of the laser.

The word "it" (line 5, para 1) refers to______.

A．light bulb

B．energy

C．molecule

D．atom

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第6题

将下列英语段落译成汉语：Two metal surfaces rubbing together cause friction and heat; bu

t if they are separated by a thin film of oil, the friction and heat are reduced. No machine would work for long if it were not properly lubricated. The oil used for this purpose must be of the correct thickness; if it is too thin it will not give sufficient lubrication, and if it is too thick it will not reach all parts that must be lubricated.

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第7题

According to the passage, when small children were asked to observe water pours from a sho

rt stout glass into a tall thin one, they found ______.

A．the quantity of the water unchanged

B．the color of the water changed

C．the quantity of the water changed

D．the quantity of the water became more

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第8题

Weight Worries May Start Early for Slim WomenThere is a range of reasons why thin women th

Weight Worries May Start Early for Slim Women

There is a range of reasons why thin women think they're too heavy, but the distorted body image may often have its roots in childhood, the results of a new study suggest.

Researchers found that among more than 2400 thin women they surveyed, nearly 10 percent thought they were too heavy. (46)

According to the study authors, led by Dr. Susanne Kruger Kjaer of the Danish Cancer Society Copenhagen, " society's ideal" female body is moving toward an underweight physique (体格). (47)

To investigate body image among thin women, the researchers gave questionnaires (调查表)to 2, 443 women ages 27 to 38 whose body mass index was at the low end of normal. (48)

Overall, almost 10 percent of the women thought they were too heavy. Those who reported certain "severe life events" in childhood or adolescence, such as having a parent become ill or having their educational hopes dashed (使破灭) , were more likely than others to have a distorted body image. (49)

In contrast, traumatic (使人不快的)events in adulthood, such as serious illness or significant marital problems, were not related to poor body image, the researchers report. (50)

A. The same was true for women who started having sex or drinking alcohol when they were younger than 15 years old.

B. Experiences in childhood, including having an ill parent, or starting to drink or have sex at a particularly young age, were among the risk factors for having a distorted body image.

C. "Our results indicate that the risk of being dissatisfied with (one's) own body weight may be established early in life. "Kjaer and her colleagues write.

D. Research suggests that many normal-weight women wish to weigh less.

E. If worries have altered your appetite or weight, it will help to talk to someone about it.

F. The women were asked about factors ranging from childhood experiences to current exercise habits.

(46)

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第9题

We found that bar at last. I didn' t have to ask again, for there it was in big red neon l

etters ovet the window--Star Bar. There were some iron tables outside with plastic chairs around them. A few people sat around, looking at a portable television set that someone had brought out of the bar. They were all in thin summer dresses or short shirts; even at that late hour it was stifling. Two thin dogs lay under one of the tables with their tongues out, and some of the women were fanning them- selves unenthusiastically (无精打彩地) with magazines.

"He' s not here," I said, after a quick look around. The television was speaking out an advertisement for a detergent(洗衣粉), and the people sitting round had their eyes glued to the picture of a woman proudly showing how white her husband' s underwear was after having been washed. They took no notice of us at all.

"Well, what did you expect？" replied Fergus, yawning (打呵欠)." It's only half past nine, and he said he would be here at nine. You ought to know Graig by this time. He' 11 turn up some- time after ten."

The writer and his friend

A．had never been to that bar before

B．did not know if they had come to the right place

C．asked somebody the name of the bar

D．had little difficulty in finding the bar

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第10题

Pulling heavy suitcases all day in the summer is hard work, especially when you are a thin

14 year-old. That was me in 1940 -- the youngest and smallest baggage boy at New York City's Pennsylvania Railway Station.

After just a few days on the job, I began noticing that the other fellows were overcharging passengers. I'd like to join them, thinking," Everyone else is doing it."

When I got home that night, I told my father what I wanted to do. "You give an honest day's work," he said, looking at me straight in my eyes. "They are paying you. If they want to do that, you let them do that."

I followed my father's advice for the rest of that summer and have lived by his words ever since.

Of all my jobs I've had, it was my experience at Pennsylvania Railway Station that struck with me. Now I teach my players to have respect for other people and their possessions. Being a member of a team is a totally shared experience. If one person steals, it destroys trust and hurts everyone. I can put up with many things, but not with the people who steals. If one of my players was caught stealing, he’d be gone.

Whether you are on a sports team. in an office or a member of a family, if you can't trust one another, there's going to be trouble.

What can be inferred about the baggage boys？

A．They could earn much, but they must work hard.

B．Many of them earned their money in a dishonest way.

C．They were all from poor families.

D．They were all thin, young boys.

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