题目内容
（请给出正确答案）
What is most noise pollution damage concerned with？
A．Objects.
B．Intensity.
C．Rate.
D．Frequency.
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更多“What is most noise pollution d…”相关的问题
Cars–curse or craze？
Johnny Watson, 30
It is easy to criticize cars – they cause pollution and accidents, and so on. But what are alternatives？ Nobody wants to travel in a slow, smelly old bus when you can relax in the comfort of your own car. In most countries, the public transport system is inadequate, expensive and inefficient – and anyway, cities today are designed to meet drivers’ needs, with fast roads and car parks everywhere. The car industry also provides thousands of jobs. Roads are getting safer and more efficient every year, and cars are causing less pollution because of lead-free petrol and other technological improvement. What’s the problem？
Amanda Rees, 33
I am much happier now that I don’t have my car. I used to spend an hour stuck in a traffic jam each morning and that made me angry and irritable for the rest of the day. I was so stressed! The worst thing about cars, though, is the number of accidents. Did you know that somebody dies in a road accident in Britain every two and a half hours？ Another thing I hate is the way that road building is destroying the countryside. Finally, I would love to live without that constant traffic noise coming through the window. In fact, I think it’s the noise that bothers me most.
1、What does Johnny think of cars？ ()
A、They cause pollution and accidents
B、They are slow and smelly
C、They are comfortable
2、Which is not the reason why Johnny supports cars？()
A、The public transport system in most countries is not good enough
B、Road building is destroying the countryside
C、Roads are much safer and more efficient now
3、Did Amanda use to have a car？()
A、Yes， she did
B、No， she didn’t
C、It doesn’t mention
4、What bothers Amanda most？()
A、What bothers Amanda most
B、The destroying of the countryside
C、The constant traffic noise
5、How serious is the road accident in Britain？()
A、Someone dies every 2 hours
B、Someone dies every 2.5 hours
C、Someone dies every 0.5 hours
Scientists, for several years, have been studying how noise affects people and animals. They are surprised by what they have learned. Peace and quiet are becoming harder to find. Noise pollution is a threat that should be looked at carefully.
There is a saying that it is so noisy that you can't hear yourself think. Doctors who study noise believe that we must sometimes hear ourselves think. If we don't, we may have headaches, other aches and pains, or even worse mental problems.
Noise adds more tension (紧张) to a society that already faces enough stress.
But noise is not a new problem. In ancient Rome, people complained so much about noise that government stopped chariots (四轮马车) from moving through the streets at night!
Ways of making less noise are now being tested. There are even laws controlling noise. We cannot return to the "good old days" of peace and quiet. But we can reduce noise--if we shout loudly enough about it.
Why are scientists surprised by the findings in their noise study？
A．Because the world is becoming more and more noisy.
B．Because they have learned that noise is also a kind of pollution.
C．Because noise is an unwanted waste for human beings.
D．Because people knew little about noise before.
Psychologists now believe that noise has a considerable effect on people's attitudes and behavior. Experiments have proved that in noisy situations(even temporary ones), people would have more anger and less cooperation; In more permanent noisy situations, many people cannot work hard, and they suffer from severe anxiety as well as other psychological problems. Some researchers, who study various aspects of effect of noise in people's mental life, maintain that noise, either temporary noise or permanent noise, often destroy creativity and activity by disturbing people's emotion and make them more easily annoyed and hard to cooperate.
However, psychologists distinguish between "sound" and "noise". "Sound" is measured physically in decibels(分贝). "Noise" cannot be measured in the same way because it refers to the psychological effect of sound and its level of "intensity" depends on the situation. Thus, for passengers at an airport who expect to hear airplanes taking off and landing, there may be a lot of sound, but not much noise(that is, they are not bothered by the noise). By contrast, if you are at a concert and two people behind you are whispering, you feel they are talking noisily even if there is not much sound. You notice the noise because it affects you psychologically.
Both sound and noise can have negative effects, but what is most important is if the person has control over the sound. People walking down the street with earphones, listening to music that they enjoy, are receiving a lot of decibels of sound, but they are probably happy hearing sounds which they control. On the other hand, people in the street without earphones must tolerate a lot of noise which they have no control over. It is noise pollution that we need to control in order to help people live more happily.
According to the passage, people （） .
A.can not complete his work in a noisy situation
B.will suffer from complete deafness because of noise pollution
C.can be psychologically affected by working in very noisy factories
D.may cooperate well in a noisy surrounding
Yet what technology has done, other technology is now starting to undo, using computer power to zap those ear-splitting noises into silence. Previously silence seekers had little recourse except to stay inside, close the windows, and plug their ears. Remedies like these are quaintly termed "passive" systems, because they place physical barriers against the unwanted sound. Now computer technology is producing a far more effective "active" system, which doesn't just contain, deflect, or mask the noise but annihilates it electronically.
The system works by countering the offending noise with "anti-noise", a some what sinister sounding term that calls to mind antimatter, black holes, and other Popular Science mindbenders but that actually refers to something quite simple. Just as a wave on a pond is flattened when it merges with a trough that is its exact opposite (or mirror image), so can a sound wave by meeting its opposite.
This general theory of sound cancellation has been around since the 1930s. In the fifties and sixties it made or a kind of magic trick among laboratory acousticians playing around with the first clunky mainframe. computers. The advent of low-cost, high-power microprocessors has made active noise-cancellation systems a commercial possibility, and a handful of small electronics firms in the United States and abroad are bringing the first ones onto the silence market.
Silence buffs might be hoping that the noise-canceling apparatus will take the shape of the 44 Magnum wielded by Dirty Harry, but in fact active sound control is not quite that active. The system might more properly he described as reactive in that it responds to sound waves already headed toward human ears. In the configuration that is usual for such systems microphones detect the noise signal and send it to the system's microprocessor, which almost instantly models it and creates its inverse for loudspeakers to fire at the original. Because the two sounds occupy' the same range of frequencies and tones, the inverse sounds exactly tike the noise it is meant to eliminate: the anti-noise canceling Beethoven's Fifth Symphony is heard as Beethoven's Fifth. The only difference is that every positive pressure produced on the air by the orchestra is matched by a negative pressure produced by the computer, and thereby silencing the sound. The system is most effective as a kind of muffler, in which microphones, microprocessor, and loudspeaker are all in a unit encasing the device, that produces the sound, stifling it at its source. But it can work as a headset, too, negating the sound at the last moment before it disturbs one's peace of mind.
The writer holds that_______.
A．modern technology has disturbed the quiet life of the people
B．modem technology has made people indifferent to noise pollution
C．modern technology has made the present world quieter than before
D．modern technology has failed to solve the problem of noise pollution
Where is the noise pollution most serious according to the passage？
A．In streets.
B．In airports.
C．In subway stations.
D．In concerts.
Road accidents, for example, happen frequently after a family quarrel and we all know people who are accident-prone, so often at odds with themselves and the world that they seem to cause accidents for themselves and others.
By definition, an accident is something you cannot predict or avoid, and the idea which used to be current, that the majority of road accidents are caused by a minority of criminally careless drivers, is not supported by insurance statistics. These show that most accidents involve ordinary motorists in a moment of carelessness or thoughtlessness.
It is not always clear, either, what sort of conditions make people more likely to have an accident. For instance, the law requires all factories to take safety precautions and most companies have safety committees to make sure the regulations are observed, but still, every day in Britain, some fifty thousand men and women are absent from work due to an accident. These accidents are largely the result of human error or misjudgment—noise and fatigue, boredom or worry are possible factors which contribute to this. Doctors who work in factories have found that those who drink too much, usually people who have a high anxiety level, run three times the normal risk of accidents at work.
This passage might be taken from
A．a text book
B．a science fiction
C．a popular magazine
D．a report of a manufacturer
A.have prepared
B.are preparing
C.prepare
D.will prepare
A．a noisy quarrel
B．a very loud noise
C．a neat line of things side by side
D．a journey in a boat
