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When were the images of Mars taken?A.In the middle of summer on Earth.B.In the middle of s

ummer on Mars.C.In the middle of summer on Earth's polar caps.D.In the middle of summer in the northern part of Mars.

提问人:网友jiangkehong 发布时间:2022-01-06
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更多“When were the images of Mars t…”相关的问题
第1题
When television first began to expand, very few of the people who had become famous as rad
io commentators were able to be effective on television. Some of the difficulties they experienced when were trying to【31】themselves to the new medium were technical. when working on radio, for example, they had become【32】to seeing on behalf of the listener. This【33】of seeing for others means that the commentator has to be very good at talking. Above all, he has to be able to【34】a continuous sequence of visual images which【35】meaning to the sounds which the listener hears. In the【36】of television, however, the commentator sees everything with the viewer.

His role, therefore, is completely different. He is there to make【37】that the viewer does not miss some point of interest, to help him focus on particular things, and to.【38】the images on the television screen. Unlike his radio colleague, he must know the 【39】of silence and how to use it at those moments【40】the pictures speak for themselves.

(31)

A.turm

B.adapt

C.alter

D.modify

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第2题
When television first began to expand, very few of the people who had become famous as rad
io commentators were able to be effective on television. Some of the difficulties they experienced when were trying to【B1】themselves to the new medium were technical. When working on radio, for example, they had become【B2】to seeing on behalf of the listener. This【B3】of seeing for others means that the commentator has to be very good at talking. Above all, he has to be able to【B4】a continuous sequence of visual images which【B5】meaning to the sounds which the listener hears. In the【B6】of television, however, the commentator sees everything with the viewer.

His role, therefore, is completely different. He is there to make【B7】that the viewer does not miss some point of interest, to help him focus on particular things, and to【B8】the images on the television screen. Unlike his radio colleague, he must know the【B9】of silence and how to use it at those moments【B10】the pictures speak for themselves.

【B1】

A.turn

B.adapt

C.alter

D.modify

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第3题
NASA is releasing several images taken by the Hubble Space Telescope, which is the closest
yet look at the red planet. Altogether there are four images, which show the entire planet. Each view shows the planet as it completes one quarter of its daily rotation. In these views the north polar cap is turned toward the Earth and is clearly visible at the top of each picture. The images, were taken in the middle of the Martian northern summer, when the polar cap was at its smallest size. During this season the sun shines continuously on the polar cap. Previous spacecraft observations have shown that this summertime polar cap is composed of water ice, just like Earth's polar caps. The Hubble Telescope pictures reveal that great changes have occurred on the surface of Mars in the past 20 years. The Martian surface is ever changing. Some regions that were dark 20 years ago are now bright red; some areas that were bright red are now dark. Winds move sand and dust from region to region, often in huge dust storms. Over long timescales many of the larger bright and dark markings remain stable, but smaller details come and go as they are covered and then uncovered by sand and dust.How is the image of the north polar cap of Mars?A.Vague. B.Clear.C.Cannot be seen. D.Barely visible.

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第4题
When television first began to expand, very few of the people who had become famous as rad
io commentators【31】 effective on television. Some of the difficulties they experienced when they were trying to【32】themselves to the new medium【33】 When working【34】 radio for example, they had become【35】 to seeing on behalf of the listener. This art of seeing for others means that the commentator had to be very good at taling.【36】 all he has to be able to create a continuous sequence of visual images which add meaning to the sounds which the listener hears. In the case of television, however, the commentator sees everything with the viewer. His role,【37】is completely different. He is there to make sure that the viewer does not miss some point of interest, to help him focus on particular things, and 【38】 the images on the television screen. Unlike his radio colleague, he【39】 know the value of silence and how to use it at those moments【40】 the pictures speak for themselves.

(31)

A.were able to be equally

B.were able to be equal

C.were able being equally

D.were able to be equal

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第5题
Honesty is the best policy, as the English saying goes. Unfortunately, honesty often deser
ts us when no one is watching, British psychologists reported last week.

Researchers at UK's Newcastle University set up an experiment in their psychology department's coffee room. They set a kettle, with tea, coffee and milk on the counter and hung up a sign listing the prices for drinks. People helping themselves to a cup of drink were supposed to put a few cents in the box nearby. The scientists hung a poster above the money box, and it changed each week between images of gazing eyes and pictures of flowers. The researchers found that staff paid 2.76 times more for their drinks when the image of the eyes was hung. "Frankly we were shocked by the size of the effect," said Gilbert Roberts, one of the researchers.

Eyes are known to be a powerful perceptual (感官的) signal for humans. "Even though the eyes were not real, they still seemed to make people behave more honestly," said Melissa Bateson, a behavioral biologist and leader of the study.

Researchers believe the effect sheds light on our evolutionary past. It may arise from behavioral features that developed when early humans formed social groups to strengthen their chances of survival For social groups to work, individuals had to co-operate, rather than act selfishly. "There's an argument that if nobody is watching us, it is in our interests to behave selfishly. But when we're being watched we should behave better. So people see us as co-operative and behave the same way towards us," Bateson said.

The new finding indicates that people have a striking response to eyes. That might be because eyes and faces send a strong biological signal we have evolved to respond to. The finding could be put to practical use, too. For example, images of eyes could increase ticket sales on public transport and improve supervision systems to prevent antisocial behavior.

The experiment conducted in Newcastle University shows that ______.

A.people enjoy free drinks more than paid ones

B.most people are dishonest if nobody is watching

C.people like pictures of flowers more than pictures of eyes

D.people are more honest when watched by pictures of eyes

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第6题
根据下面内容,回答题: When another old cave is discovered in the south of France, it is no

根据下面内容,回答题:

When another old cave is discovered in the south of France, it is not usually news. Rather, it is an ordinary event. Such discoveries are so frequent these days that hardly anybody pays heed to them.

However,when the Lascaux cave complex was discovered in 1940,the world was amazed.

Painted directly on its walls were hundreds of scenes showing how people lived thousands of years ago. The scenes show people hunting animals, such as bison or wild cats. Other images depict birds and, most noticeably, horses, which appear in more than 300 wall images, by far outnumbering all other animals.

Early artists drawing these animals accomplished a monumental and difficult task. They did not limit themselves to the easity accessible walls but carried their painting materials to spaces that required climbing steep walls or crawling into narrow passages in the Lascaux complex.

Unfortunately, the paintings have been exposed to the destructive action of water and temperature changes,which easily wear the images away. Because the Lascaux caves have many entrances, air movement has also damaged the images inside.

Although they are not out in the open air, where natural light would have destroyed them long ago,many of the images have deteriorated and are barely recognizable. To prevent further damage,the site was closed to tourists in 1963,23 years after it was discovered.

Based on the passage,what is probably true about the south of France? 查看材料

A.It is home to rare animals.

B.It has a large number of caves.

C.It is known for horse-racing events.

D.It has attracted many famous artists.

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第7题
Scientists have come up with a theory for why time flies when yon are having fun and drags
when you are bored.

Scans have shown that【62】of activity in the brain change depending on how we focus on a task. Concentrating on time passing, as we do when bored, will【63】brain activity which will make it seem as though the clock is ticking more【64】. The research, by the French Laboratory of Neurobiology and Cognition, is【65】in the magazine Science.

In the study, 12 volunteers watched an image while researchers【66】their brain activity using MRI (核磁共振成像) scans. Volunteers were given a variety of tasks. In one they were told to concentrate simply on the duration of an image, in【67】they were asked to focus on the color, and in a third they were asked to concentrate on both【68】and color. The results showed that a network of brain regions was【69】when more subjects were paid attention to duration.

It is thought that if the brain is busy focusing on many【70】of a task, then it has to spread its resources thinly, and pays less heed (注意) to time passing. Therefore, time passes without us really【71】it, and seems to go quickly.【72】, if the brain is not stimulated in this way, it concentrates its【73】energies on monitoring the passing of time. This may make time seem to【74】, but in fact it is probably a more accurate perception of reality.【75】, the researchers found that the more volunteers concentrated on the duration of the images, the more【76】were their estimates of its duration.

Lead researcher Dr. Jennifer Coull said many of the areas of the brain【77】in estimating time were the same that played a key role in controlling movement, and preparing for action. She said this【78】suggests that the brain may make【79】of time as intervals between movements, in much the same way【80】musicians mark time with his foot, or athletes【81】the sound of a starter's pistol.

(63)

A.norms

B.modes

C.patterns

D.styles

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第8题
Speed reading originated at the beginning of this century, when the publication explosi

on swamped readers with more than they could possibly handle at normal reading rates.Most early courses, however, were based on information from a rather unexpected source----the Royal Air Force.

During the First World War air force tacticians had found that, when flying, a number of pilots were unable to distinguish planes seen at a distance.In the life-and-death situation of air combat, this was obviously a serious disadvantage, and the tacticians set about finding a remedy.They developed a machine called a tachistoscope (视觉记忆测试镜),which flashes images for varying short spaces of time on a large screen.They started by flashing fairly large pictures of friendly and enemy aircraft at very slow exposures and then gradually shortened the exposure, while decreasing the size and changing the angle of the image seen.To their surprise, they found that, with training, the average person was able to distinguish almost specklike (斑点似的) representations of different planes when the images had been flashed on the screen for only one five-hundredth of a second.

Reasoning that, if the eyes could see at this incredible speed, reading speeds could obviously be dramatically improved, they decided to transfer this information to reading.Using exactly the same device, they first flashed one word in large type for as long as five seconds on a screen, gradually reducing the size of the word and shortening the length of each flash.Eventually they were flashing four words simultaneously on a screen for one five-hundredth of a second, and the subjects were still able to read them.

As a consequence of these findings, most speed reading courses have been based on this flash-card or tachistoscopic training (also known as still-screen training).

1.In the first paragraph, the writer implies but not directly states that ().

A.a bomb exploded in the publishing house

B.readers were completely at a loss by the publication explosion

C.it might be beyond the ability of readers to read at normal speed as before with so many printed materials came out

D.people could not handle reading at the beginning of this century

2.In line 1, Para.2, the word “tactician” is used to indicate one who is skilled in ().

A.military strategy

B.speed reading

C.driving

D.making machines

3.The reason for developing the tachistoscope is ().

A.to train air force tacticians

B.not mentioned in the text

C.that many air force pilots failed to identify distant planes

D.the fact that many pilots had poor eyesight

4.Which of the following is NOT true according to the passage?

A.The tachistoscope is the equipment with which pilots were trained to distinguish aircrafts rapidly.

B.The tachistoscope was invented by a number of pilots.

C.The tachistoscope could be used to train speed reading.

D.The tachistoscope can flash pictures on a screen.

5.What is the author trying to tell us in this text?

A.How the tachistoscope was invented.

B.The development of speed reading.

C.The training of air force tacticians.

D.A story about the First World War.

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第9题
I have just come home after viewing some astonishing works of art that were recently disco
vered in Church Hole cave in Nottinghamshire. They are not drawings, as one would expect, but etchings, and they depict a huge range of wild animals. The artists who created them lived around 13,000 years ago, and the images are remarkable on a variety of counts. First of all, their sheer number is staggering, there are ninety all told. Moreover, fifty-eight of them are on the ceiling. This is extremely rare in cave art, according to a leading expert, Dr Wilbur Samson of Central Midlands University. Wall pictures are the norm, he says, "But more importantly, the Church Hole etchings are an incredible artistic achievement. They can hold their own in comparison with the best found in continental Europe." I am not a student of the subject, so I have to take his word for it. However, you do not have to be an expert to appreciate their beauty.

In fact, it is the wider significance of the etchings that is likely to attract most attention in academic circles, since they radically alter our view of life in Britain during this epoch. It had previously been thought that ice-age hunters in this country were isolated from people in more central areas of Europe, but the Church Hole images prove that ancient Britons were part of a culture that had spread right across the continent. And they were at least as sophisticated culturally as their counterparts on the mainland.

An initial survey of the site last year failed to reveal the presence of the etchings. The reason lies in the expectations of the researchers. They had been looking for the usual type of cave drawing or painting, which shows up best under direct light. Consequently, they used powerful torches, shining them straight onto the rock face. However, the Church Hole images are modifications of the rock itself, and show up best when seen from a certain angle in the natural light of early morning. Having been fortunate to see them at this hour, I can only say that I was deeply—and unexpectedly—moved. While most cave art often seems to have been created in a shadowy past very remote from us, these somehow convey the impression that they were made yesterday.

Dr Samson feels that the lighting factor provides important information about the likely function of these works of art. "I think the artists knew very well that the etchings would hardly be visible except early in the morning. We can therefore deduce that the chamber was used for rituals involving animal worship, and that they were conducted just after dawn as a preliminary to the day's hunting."

To which I can only add that I felt deeply privileged to have been able to view Church Hole. It is a site of tremendous importance culturally and is part of the heritage, not only of this country, but the world as a whole.

According to the passage, the images in Church Hole cave are______.

A.unique examples of ceiling art

B.particularly beautiful cave paintings

C.superior in quality to other cave art in Britain

D.aesthetically exceptional

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