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A lot of experiments conducted by the UK government prove that the appearance of ______.

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发布时间：2020-10-31

更多“A lot of experiments conducted by the UK government prove that the appearance of ______.”相关的问题

第1题

听力原文：No one knows exactly why we sleep. But scientists have learned a lot about how we

听力原文： No one knows exactly why we sleep. But scientists have learned a lot about how we sleep, From sleep experiments, scientists have learned that there are four different stages of sleep.

When you first fall asleep, your heart starts to beat more slowly and your breathing slows down. If something wakes you, you might not think that you had been asleep. Some people call this kind of sleep dozing. Scientists call it Stage One sleep. Next, if you are not awakened, you drift into a deeper sleep. Your pulse and breathing become even slower than they were during Stage One sleep. But you can still be awakened quite easily. If you take a cat nap, you probably will not get any further than this stage of sleep, which is called Stage Two.

If you sleep longer than about twenty minutes, you go into the third stage of sleep. Your body is very relaxed. It would take a loud noise to wake you up.

You have probably heard of people who walk in their sleep. No one knows what makes people sleepwalk. But a person can sleepwalk only during Stage Four. This is the deepest kind of sleep. If someone wakes you up during stage four, you might feel very confused. It might take you a few minutes to get used to being awake.

(36)

A．Reasons for People's Sleeping.

B．Four Stages of Sleep.

C．Reasons for sleepwalking.

D．A Sleep Experiment.

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第2题

Passage OneHow much living space does a person need？ What happens when his space requireme

Passage One

How much living space does a person need？ What happens when his space requirements are not adequately met？ Sociologists and psychologists are conducting experiments on rats to try to determine the effect of overcrowded conditions on man. Recent studies have shown that the behavior. of rats is greatly affected by space. If rats have adequate living space, they eat well, sleep well, and reproduce well. However, if their living conditions become too crowded, their behavior. patterns and even their health perceptibly change. They cannot sleep or eat well, and signs of fear and tension become obvious. The more crowded they are, the more they tend to bite each other and even kill each other. Thus for rats, population and violence are directly related. Is this a natural law for human society as well？ Is adequate space not only desirable, but also essential for human survival？

This passage is mainly about ______.

A.living space and behavior

B.population and living conditions

C.interesting experiments on rats

D.a natural law for human society

What is the purpose of the experiments described in the passage？A.To determine how much living space a rat needs.

B.To see what happens when rats live in a limited space.

C.To know the likely effects of inadequate living space on human beings.

D.To find out the relationship between population and living conditions.

The passage suggests that overcrowded conditions ______.A.are directly related with population

B.may cause an increase in violence

C.may lead to high birth rate

D.may bring about pollution problems

How would rats behave when their living conditions become too crowded？A.They eat a lot and become friendly to others.

B.They sleep little and act quite peacefully.

C.They eat little but sleep soundly.

D.They become nervous and tend to be war-like.

请帮忙给出每个问题的正确答案和分析，谢谢！

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第3题

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

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第4题

听力原文：Dr. Allen Hersh designs smells for businesses. He says that it doesn't take a who

听力原文： Dr. Allen Hersh designs smells for businesses. He says that it doesn't take a whole lot of smell to affect you. (29) Store owners can lure you to the candy aisle, even if you don't realize you are smelling candy. This idea scares a lot of people. Groups that protect the rights of shoppers are upset.

They say the stores are using a kind of brainwashing which they call "smell-washing". "It's pretty dishonest," says Mark Silbergeld. He runs an organization that checks out products for consumers. The scientists hired to design the scents disagree. (30) "There's soft background music. There's special lighting. There're all sorts of bells being used," says Dr. Hersh, "why not smells？" "One reason why not," says Silbergeld, "is that some people are allergic to certain scents pumped into products or stores."

But there is a whole other side to this debate, "do the smells really work？" So far, there is little proof one way or the other. But Dr. Hersh has run some interesting experiments. In one of Hersh's experiments, 31 volunteers were led into a shoe store that smells slightly like flowers. Later, another group shopped in the same store, but with no flower odor. (31) Dr. Hersh found that 84% of the shoppers were more likely to buy the shoes in the flower-scented room, but Hersh found out something even stranger. "Whether the volunteers like the flower scent or not didn't matter," Hersh says, "Some reported that they hated the smell, but they still were more likely to buy the shoes in the scented room."

Questions:

Why are some people against the use of smells to attract customers？

What is Dr. Hersh's attitude to the use of smells for business？

What did Hersh's experiment show？

(30)

A．Customers may get addicted to the smell.

B．Customers may be misled by the smells.

C．It hides the defects of certain goods.

D．It gives rise to unfair competition.

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第5题

The results of the experiments were ______ and they will have to be done again.A．comprehen