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A、The importance of sleep to a healthy life. B、Reasons for Americans’ decline in sleep. C、Some tips to improve the quality of sl
A、The importance of sleep to a healthy life. B、Reasons for Americans’ decline in sleep. C、Some tips to improve the quality of sl
admin
2022-07-13
27
问题
The massive decline in sleep happened so slowly and quietly that few seemed to notice the trend. Was it because of the growing attraction of the Internet, video games and endless TV channels? Never disconnecting from work? No matter how it happened, millions of Americans are putting their health, quality of life and even length of life in danger.
New evidence shows why getting enough sleep is a top priority.
Some 40% of Americans get less than seven hours of shut-eye on weeknights.
"The link between sleep and health, and bad sleep and disease is becoming clearer and clearer," says Lawrence Epstein, a sleep expert at Harvard University.
For example, sleep duration has declined from some eight hours in the 1950s to seven in recent years.
At the same time, high blood pressure has become an increasing problem.
Blood pressure and heart rate are typically at their lowest levels during sleep. People who sleep less tend to have higher blood pressure, heart attack, diabetes, weight gain and other problems.
Sleeping better may help fight off illness. "When people are sleep-deprived, there are higher levels of stress hormones in their bodies, which can decrease immune function," says Doctor Felice of Northwestern University in Chicago. A university of Chicago study shows people who sleep well live longer. So say good night sooner and it may help you stay active and vital to a ripe old age.
16. What is the speaker mainly talking about?
17. What do we learn from the talk about today’s Americans?
18. What does the speaker say will happen to people who lack sleep?
选项
A、The importance of sleep to a healthy life.
B、Reasons for Americans’ decline in sleep.
C、Some tips to improve the quality of sleep.
D、Diseases associated with lack of sleep.
答案
A
解析
综合理解题。短文首先说明了睡眠时间减少问题,并列举了睡眠时间减少的原因,接着提到新证据说明为何足够的睡眠非常重要,并用两位教授的话和芝加哥一所大学的研究论证了这一点。由此可知,短文的主要内容是睡眠对于健康生活的重要作用。
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0
大学英语四级
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