单选题
下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断:如果该句提供的是正确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文中没有提及,请选择C。
{{B}}Sleep Problems Plague the Older Set{{/B}}
Older Americans often have difficulty getting a good night's rest. It's a huge quality-of-life problem, experts say, because contrary to popular belief, seniors require about the same amount of sleep as younger adults.
"Sleep problems and sleep disorders are not an inherent (固有的) part of aging," said Dr. Harrison G. Bloom, an associate clinical professor of geriatrics (老年病学) and medicine at the Mount Sinai School of Medicine in New York City. "It's pretty much of a myth that older people need less sleep than younger people."
Yet, in a study published recently in The American Journal of Medicine, researchers found that more than half of older Americans have problems getting the sleep they need.
Older people tend to have "sleep fragmentation," meaning they wake up more often during the night, said study author Dr. Julie Gammack, an assistant professor of medicine in the Division of Geriatric Medicine at St. Louis University.
They also seem to get less "REM" sleep, the type of sleep during which rapid eye movement occurs, Bloom added.
It's unclear what role these naturally occurring changes in sleep patterns have on a person's quality of life, Bloom said "What is important, though, is that older people often have actual sleep disorders and problems with sleep," he said.
And, experts say, there is usually more than one cause.
"Sleep trouble in older adults is typically associated with acute and chronic illnesses, including specific sleep disorders like sleep apnea (呼吸暂停) and restless leg syndrome that appear with greater frequency in older populations," said Michael V. Vitiello, a professor of psychiatry and behavioral sciences and associate director of the University of Washington's Northwest Geriatric Education Center.
Taking multiple medications, as many older people do, can also lead to fatigue and "hypersomnia," or being tired all the time, Bloom added.
Another big problem, he noted, is depression and anxiety. "Those are very commonly associated with sleep problems."
Despite the prevalence (流行) of sleep difficulties in older adults, many patients aren't getting the help they need As a result, problems like insomnia (失眠), restless leg syndrome and sleep apnea are underdiagnosed and undertreated, Bloom said.
单选题 Sleep problems can seriously affect one's quality of life.
【正确答案】 A
【答案解析】短文的第一段第二句说,睡眠问题是一个重大的生活质量问题。显然,睡不好觉,会严重影响一个人的生活质量。
单选题 It is true that older people need less sleep than younger people.
【正确答案】 B
【答案解析】短文的第一段第二句又说,老年人所需要的睡眠时间与年轻成年者没有什么区别。
单选题 Younger people in America seldom complain of sleep disorders.
【正确答案】 C
【答案解析】短文通篇谈的是老年人的睡眠问题,没有提及年轻人是否抱怨有睡眠障碍。
单选题 The number of older Americans with sleep problems is not small.
【正确答案】 A
【答案解析】短文的第三段说,研究者发现有超过半数的美国老年人有睡眠问题。
单选题 "Sleep fragmentation" refers to a marked lack of "REM" sleep.
【正确答案】 B
【答案解析】短文的第四段对sleep fragmentation进行了解释,它与REM sleep无关,指的是夜间经常醒来。
单选题 The causes of sleep problems in older people remain unidentified.
【正确答案】 B
【答案解析】短文的第八段对老年人睡眠问题的起因进行了分析,主要与各种急、慢性病相关。
单选题 Actions will soon be taken in America to better help people with Sleep problems.
【正确答案】 C
【答案解析】短文没有提及美国是否很快会采取行动帮助老年人解决睡眠问题。