A: People who think they are sleeping enough are better off than those who don't.
B: Some people can remain vigorous with only 6.5 hours' sleep a night.
C: If they get 8.5 hours' sleep, people will be full of drive and ambition.
D: People's mental power suffers if they are in sleep deficit.
举一反三
- Two groups of people are compared in the third study. They are people______. A: with less than5 hours of sleep a night and with 7 to 9 hours of sleep B: who slept 4 hours a night and who slept 4 hours for 2 nights C: with less than 4 hours of sleep a night and with 7 to 9 hours of sleep D: with less than 5 hours of sleep a night and with 8 hours of sleep
- What is TRUE of human sleep A: Most people need less sleep when grow older. B: Most people need seven and a half hours of sleep every night. C: On average, people in the U. S. today sleep less per night than they used to. D: For most people, less than six hours of sleep on a typical work night is enough.
- 智慧职教: Judging from recent surveys, most experts in sleep behavior agree that there is virtually an epidemic (流行病) of sleepiness in the nation. “I can't think of a single study that hasn't found Americans getting less sleep than they ought to,” says Dr. David. Even people who think they are sleeping enough would probably be better off with more rest. The beginning of our sleep-deficit (睡眠不足) crisis can be traced to the invention of the light bulb a century ago. From diary entries and other personal accounts from the 18th and 19th centuries, sleep scientists have reached the conclusion that the average person used to sleep about 9.5 hours a night. “The best sleep habits once were forced on us, when we had nothing to do in the evening down on the farm, and it was dark.” By the 1950s and 1960s, that sleep schedule had been reduced dramatically, to between 7.5 and eight hours, and most people had to wake to an alarm clock. “People cheat on their sleep, and they don't even realize they're doing it,” says Dr. David. "They think they're okay because they can get by on 6.5hours, when they really need 7.5, eight or even more to feel ideally vigorous." Perhaps the most merciless robber of sleep, researchers say, is the complexity of the day. Whenever pressures from work, family, friends and community mount, many people consider sleep the least expensive item on his programme. “In our society, you're considered dynamic if you say you only need 5.5 hours' sleep. If you've got to get 8.5 hours, people think you lack drive and ambition." To determine the consequences of sleep deficit, researchers have put subjects through a set of psychological and performance tests requiring them, for instance, to add columns of numbers or recall a passage read to them only minutes earlier. "We've found that if you're in sleep deficit, performance suffers," says Dr. David. “Short-term memory is weakened, as are abilities to make decisions and to concentrate.”
- According to Dr. David, Americans ______. A: are ideally vigorous even under the pressure of life B: often neglect the consequences of sleep deficit C: do not know how to relax themselves properly D: can get by on 6.5 hours of sleep
- Why is the question of "how easily people can get used to working at night" not a mere academic question A: Because few people like to reverse the cycle of sleep aud wakefulness. B: Because sleep normally coincides with the hours of darkness. C: Because people are required to work at night in some fields of industry. D: Because shift work in industry requires people to change their sleeping habits.
内容
- 0
What evidence is<br/>not mentioned to show the link between sleep and health? () A: People who sleep<br/>less tend to have higher blood pressure, heart attack, diabetes,<br/>weight gain and other problems. B: Sleeping better<br/>may help fight off illness. C: People who sleep<br/>well live longer. D: People who lack<br/>sleep will have poor mind function.
- 1
What's this news about A: A new find that people who sleep less tend to be fat. B: A new find that people who sleep less tend to be thin. C: A new find that more sleep will result in obesity. D: A new find that women should sleep less.
- 2
Which of the following people, in the author's opinion, most likely have personalities opposite to each other A: The people sleeping on their stomachs and those sleeping on their backs. B: The people sleeping on their sides and those sleeping curled up. C: The people sleeping on their backs and those sleeping on their sides, D: The people sleeping curled up and those sleeping on their stomachs.
- 3
What are the advantages of music? There’re studies that suggest music can contribute to healing. People who listen to music get ________ than those who don’t.
- 4
There are various ways _______ people who suffer from insomnia can improve their sleep patterns.A. in that A: in which B: on which C: by what