Today we hear me me about the imptance of getting enoughsleep—about eight hours a night. Sleep can help heal give energy toboth the body the brain. ____1____ It seems almost certain that the thirdof our lives that we spend asleep has a great effect on the two-thirds that weare awake. Sleep affects our emotions, memy, focus, behavi.
Studies show that people in developed countries spend less timeasleep me time at wk commuting. Dr. Karine Spiegel, at theUniversity of Chicago, has found that the average length of sleep has gone downfrom nine hours a night in 1910 to seven--a-half hours a night today.However, our bodies cannot function well without enough sleep. ____2____Accding to Canadian scientist Dr. Stanley Cen, every hour of lost sleep at nightcauses us to lose one I.Q. point the next day. F example, when someone getsonly five six hours of sleep each night f a week, the person’s I.Q. couldgo down 15 points me. ____3____
Most sleep experts say that humans need at least eight hours ofsleep every day, but it should be in two stages: a long sleep at night ashter nap in the afternoon. Some companies help their employees follow thisadvice. ____4____ They say this makes the wkers much me efficient.
To study sleep deprivation (not getting enough sleep), scientistsuse a test called the Multiple Sleep Latency Test (MSLT). During the test, aperson stays in a darkened, quiet room during the daytime. Scientists believethat a sleep-deprived person will fall asleep quickly. If it takes ten minutes longer to fall asleep, the person is probably getting enough sleep.
Scientists have also found that the time of year seems to affect howmuch sleep we need. ____5____ However, in the summer, people sometimes sleep aslittle as six hours, without having any problems.
詞匯：
emotion n. 情緒
commuting n. 乘公交車上下班，通勤
I.Q. n. 智商(全稱為intelligent quotient)
deprivation n. 剝奪，匱乏
Sleep Latency Test n. 睡眠潛伏期
注釋：
1.have/has an effect on... 對……有效果的
2.go down from... to...從………降至……
練習：
AThey allow them to “power nap” in the afternoon, if only f 20 minutes.
BLosing just one two hours of sleep a night, over a long period oftime, can cause serious health problems.
CPeople usually sleep longer in the winter, sometimes as much as 14hours a night.
DPeople in power are me intelligent because they take naps.
EMedical experts now believe that sleep is even me imptant fhealth than diet exercise.
FThat’s why, without enough sleep, a nmally intelligent person may startto have difficulty doing daily tasks.
答案與題解：
1.E 本題的做題線索為其之前的一句話，即“睡眠能有助于恢復補充身體和大腦的能量”，其描述的是睡眠的功能，選項E說的也是睡眠的功能，與前文形成補充說明。
2.B 該選項對睡眠減少的后果進行了描述，與前一句中“在缺少足夠睡眠的情況下，我們的身體無法正常運作”形成呼應，是一個結果性的解釋，雖然選項F也是對睡眠不足人群后果的解釋，但是選項F在此不符合上面一句話的語境，其主要是在描述睡眠和智商直接的關系，在下文才有所提及，故答案為選項
3.F 從第三段最后一句話看出，選項F描述的是睡眠和智商之間的聯(lián)系，其做題線索和上一題一樣，都是對前面一句話的結果性補充描寫。
4.A 該題的做題線索也是對其前一句的話的補充說明，前文中提到了一些公司在睡眠方面對其員工進行了幫助，該選項則簡短介紹了這些公司都采取了哪些具體方案。
5.C 本題的做題線索為上下文搭配，在最后一段的第一句中明顯提及了睡眠和一年中的不同時期有關，后面最后一句話又講到了夏季的睡眠時間，那么從中可以判斷出，這里描述的應該是另外一種季節(jié)的睡眠時間，從而與段首觀點句呼應并與下句形成對比，而選項C描述的便是冬季的睡眠時間，故符合要求。
Studies show that people in developed countries spend less timeasleep me time at wk commuting. Dr. Karine Spiegel, at theUniversity of Chicago, has found that the average length of sleep has gone downfrom nine hours a night in 1910 to seven--a-half hours a night today.However, our bodies cannot function well without enough sleep. ____2____Accding to Canadian scientist Dr. Stanley Cen, every hour of lost sleep at nightcauses us to lose one I.Q. point the next day. F example, when someone getsonly five six hours of sleep each night f a week, the person’s I.Q. couldgo down 15 points me. ____3____
Most sleep experts say that humans need at least eight hours ofsleep every day, but it should be in two stages: a long sleep at night ashter nap in the afternoon. Some companies help their employees follow thisadvice. ____4____ They say this makes the wkers much me efficient.
To study sleep deprivation (not getting enough sleep), scientistsuse a test called the Multiple Sleep Latency Test (MSLT). During the test, aperson stays in a darkened, quiet room during the daytime. Scientists believethat a sleep-deprived person will fall asleep quickly. If it takes ten minutes longer to fall asleep, the person is probably getting enough sleep.
Scientists have also found that the time of year seems to affect howmuch sleep we need. ____5____ However, in the summer, people sometimes sleep aslittle as six hours, without having any problems.
詞匯：
emotion n. 情緒
commuting n. 乘公交車上下班，通勤
I.Q. n. 智商(全稱為intelligent quotient)
deprivation n. 剝奪，匱乏
Sleep Latency Test n. 睡眠潛伏期
注釋：
1.have/has an effect on... 對……有效果的
2.go down from... to...從………降至……
練習：
AThey allow them to “power nap” in the afternoon, if only f 20 minutes.
BLosing just one two hours of sleep a night, over a long period oftime, can cause serious health problems.
CPeople usually sleep longer in the winter, sometimes as much as 14hours a night.
DPeople in power are me intelligent because they take naps.
EMedical experts now believe that sleep is even me imptant fhealth than diet exercise.
FThat’s why, without enough sleep, a nmally intelligent person may startto have difficulty doing daily tasks.
答案與題解：
1.E 本題的做題線索為其之前的一句話，即“睡眠能有助于恢復補充身體和大腦的能量”，其描述的是睡眠的功能，選項E說的也是睡眠的功能，與前文形成補充說明。
2.B 該選項對睡眠減少的后果進行了描述，與前一句中“在缺少足夠睡眠的情況下，我們的身體無法正常運作”形成呼應，是一個結果性的解釋，雖然選項F也是對睡眠不足人群后果的解釋，但是選項F在此不符合上面一句話的語境，其主要是在描述睡眠和智商直接的關系，在下文才有所提及，故答案為選項
3.F 從第三段最后一句話看出，選項F描述的是睡眠和智商之間的聯(lián)系，其做題線索和上一題一樣，都是對前面一句話的結果性補充描寫。
4.A 該題的做題線索也是對其前一句的話的補充說明，前文中提到了一些公司在睡眠方面對其員工進行了幫助，該選項則簡短介紹了這些公司都采取了哪些具體方案。
5.C 本題的做題線索為上下文搭配，在最后一段的第一句中明顯提及了睡眠和一年中的不同時期有關，后面最后一句話又講到了夏季的睡眠時間，那么從中可以判斷出，這里描述的應該是另外一種季節(jié)的睡眠時間，從而與段首觀點句呼應并與下句形成對比，而選項C描述的便是冬季的睡眠時間，故符合要求。