题目内容
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The noise around was terrible, but I had to______it.
A．keep away from
B．keep up with
C．live with
D．live on
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更多“The noise around was terrible,…”相关的问题
A.put up with
B.keep up with
C.come up with
D.catch up with
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.
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
"Not so," say scientists Dr. Darley and Dr. Fatane. They' ve found the reasons why people don' t act. According to them, a person has to go through two steps before he can help. First he has to notice there is an emergency.
Suppose you see u middle-aged man fall onto the ground. Is he having a heart attack, or some other physical trouble？ Or is he simply about to sleep off a drunk？ So it' s not always easy to tell if you are faced with a real emergency.
Second and more important, the person faced with an emergency must feel himself responsible. He must feel that he must help.
The researchers found that a lot depends on how many people are around. They asked college students to come in to be "tested". Some came alone, some with one or two others, and some in large groups. When they came in, either alone, in pairs, or in groups, a lady went into the next room. Soon the students heard a scream, the noise of something falling and a cry for help. All of this had been prerecorded on a tape-recorder.
Eight out of ten of the students taking the test alone acted to help. Of the students in pairs, only two out of ten helped. Of the students in groups, none helped,
In other words, in a group, Americans often fail to act. They feel that others will act. They, themselves, needn' t. They do not feel any direct responsibility.
Why didn't the thirty-two people act to help Kitty according to the passage？
A．Because they were afraid to be killed.
B．Because they were cruel in their hearts.
C．Because they thought others would help.
D．Because they didn't notice the emergency,
(非英语类学生必做)
I arrived in the United States 【61】 February 6, 1986, but I remember my first day here very 【62】 My friend was waiting for me when my 【63】 landed at Kennedy Airport at three o'clock in the afternoon. The weather was very 【64】 and it was snowing, but I was 【65】 excited to mind. From the airport, my friend and I 【66】 a taxi to my hotel. On the way, I saw the skyline of Manhattan for the first time and I stared in 【67】 at the famous World Trade Center, the tallest building in the world. My friend helped me 【68】 at the hotel and then left because he had to go 【69】 to work. He promised to return the next day.
Shortly after he left, I went to a 【70】 near the hotel to get something to eat. As I couldn't speak 【71】of English, I couldn't tell the 【72】 what I wanted. I was very upset and started to make some gestures, but the waiter didn't 【73】 me. Finally, I ordered the same thing the man at the next table was eating. After dinner, I started to walk along Broad way 【74】 I came to Times Square with its movie theatres, neon lights, and huge crowds of people. I did not feel tired, so I 【75】 walking around the city. I wanted to see everything on my first day. I knew it was 【76】 , but I wanted to try.
When I returned to the hotel, I was exhausted, but I 【77】 sleep because I kept hearing the fire and police sirens during the night. I lay 【78】 and thought about New York. It was a very big and 【79】 city with many tall buildings and big cars, and full of noise and busy people. I also decided right then that I had to learn to speak 【80】 .
(66)
A．in
B．at
C．on
D．for
What is most noise pollution damage concerned with？
A．Objects.
B．Intensity.
C．Rate.
D．Frequency.
According to the passage, an active noise-cancellation system______.
A．contains noise rather than negates it
B．eliminates noise rather than muffles it
C．deflects noise rather than baffles it
D．holds noise hack rather than stifles it
