Question

14．Why is it so difficult to fall asleep when you are overtired？There is no one answer that applies to every individual．But many people fail to note the difference between fatigue，physical tiredness and sleepiness，the inability to stay awake．It's possible to feel"tired"physically and still be unable to fall asleep，because while your body may be exhausted，you don't feel sleepy．To fall asleep，you need enough time to relax，even if you feel fatigued．It's not so easy to simply"turn off"．According to Carl E．Hunt，director of the National Center on Sleep Disorders Research in Bethesda，Maryland，most people do not allow themselves relaxed．
Lack of sleep complicates matters even more．Experts say adults need at least 7 to 8 hours of sleep a night to function properly．When you get less sleep than that on consecutive （連續(xù)） nights，you begin to be burdened by"sleep debt"．As sleep debt increases （and functionality decreases），your body experiences a stress response and begins to release adrenaline （腎上腺素）．Now a bad cycle has been created：You experience the feeling of being more and more tired，but your body is increasingly stimulated．"Power sleeping"for more hours on weekends is only a temporary solution．"There is no substitute for getting a good night's sleep on a regular basis，"says Hunt．
Most of us，however，don't get the sleep we need．According to the 2002 National Sleep Foundation，Americans sleep an average of 6.9 hours per night during the week，and 58 percent of adults experience sleeplessness a few nights a week or more．

33．The writer intends to tell usD．
A．Americans don't get enough sleep
B．what benefits we can get from enough sleep   
C．lack of sleep has a bad effect on our body  
D．why it's difficult for overtired people to fall asleep  
34．Which of the following is NOT caused by lack of sleep？C
A．Power sleeping．                        
B．Sleep debt．
C．Lack of adrenaline．                    
D．Function badly．
35．From the passage we can draw a conclusion that lack of sleepD．
A．is so common that it isn't worth paying attention to
B．doesn't matter for it can be solved by"Power sleeping
C．can make it easy to fall asleep when one is overtired
D．may make it difficult to fall asleep when one is overtired．

Answer 1

分析 本文屬于說明文閱讀，作者通過這篇文章主要向我們描述了為何你勞累過度卻又如此難以入睡的原因，大多數(shù)人都沒有給自己充分的舒緩時(shí)間，長期的睡眠不足紊亂了身體機(jī)能，容易導(dǎo)致疲憊時(shí)難以入睡，因此我們一定要養(yǎng)成每晚有規(guī)律的安睡的習(xí)慣．

解答 33．D．推理判斷題．根據(jù)文章第一段"Why is it so difficult to fall asleep when you are overtired？There is no one answer that applies to every individual"，可知作者的主要目的是告訴我們?yōu)楹螛O度疲憊的人難以入睡的原因；故選D．
34．C．細(xì)節(jié)理解題．根據(jù)文章第二段"you begin to be burdened by"sleep debt"．As sleep debt increases （and functionality decreases），your body experiences a stress response and begins to release adrenaline （腎上腺素）""Power sleeping"for more hours on weekends is only a temporary solution"，可知睡眠不足會(huì)導(dǎo)致睡眠債，腎上腺素增多，長睡不醒等，故選C．
35．D．推理判斷題．根據(jù)最后一段"Americans sleep an average of 6.9 hours per night during the week，and 58 percent of adults experience sleeplessness a few nights a week or more"，可推測(cè)睡眠不足有可能導(dǎo)致失眠現(xiàn)象；故選D．

點(diǎn)評(píng) 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力，做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句，和題干進(jìn)行比較，再做出正確的選擇．在做推理判斷題不要以個(gè)人的主觀想象代替文章的事實(shí)，要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷．