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<3>Do you often burn the midnight oil simply to play Facebook games or watch short films on YouTube? A poll of one thousand teenagers conducted by the Sleep Council shows that many teenagers today are damaging their health by not getting enough sleep and by falling asleep with electronic devices on. According to the poll, gadgets in bedrooms, such as computers and TVs, are fuelling poor qualityjunk sleep.” Nearly all the teenagers surveyed have a phone, music system, or TV in their bedroom, and two thirds have all three and more. Moreover, a quarter of the teenagers surveyed often fall asleep watching TV, listening to music or with other equipment still running. Their sleep quality is affected by the non-stop noise from these electronic devices. As a consequence, they usually only get between four and six hours of sleep, which is much less than the eight hours most experts recommend. This may explain why many of them often feel tired during the day. Ironically, only ten percent of the teenagers surveyed place much importance on getting a good night’s sleep. This is an incredibly worrying trend. Sleep is important for both physical and mental functioning and well-being. Previous studies have suggested that sleep deprivation can lead to hormonal changes which tell the body to eat sugary or starchy food to provide an energy boost. Hence, people who do not get enough sleep have a much higher risk of obesity. Moreover, they tend to have bad moods and poor concentration. In some cases, lack of sleep may even interfere with the proper development of the brain.
 Teenagers need to be taught that sleep is important for their health. They should realize that when they sleep more, their body spends more time in what is known as “deep sleep,” which is when the brain refreshes itself. But it seems advising teenagers to get enough sleep is simply easier said than done.

【題組】54.What can be inferred from this passage?
(A) The more a person sleeps, the less deep sleep he will have, because his brain is busy refreshing itself.
(B) Textbooks with lessons that teach teenagers the importance of sleep may not be as effective as expected.
(C) Starchy food provides an energy boost and helps people who do not have enough sleep lower the risk of obesity.
(D) Hormonal changes caused by sleep deprivation help reduce the effects of non-stop noise from electronic devices.
編輯私有筆記
答案:B
難度:困難
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