Question

16．A strange thing happens to nearly everybody at night．They turn off the lights，put up the covers and close their eyes．Six or seven hours later，they wake up again．Strange，isn't it？
Sleep puzzles science．Scientists and doctors would rather talk about why one can't fall asleep．They are not so sure what causes sleep．
The best conditions for sleep，they say，are good health and meal neither too big nor too small．No worries and a comfortable place to sleep in are important，too．They advise against two in one bed．
Strange things happen during sleep．For example，you move often．You would feel tired if you didn't．You also dream．Part of your brain is still awake when you dream．Dreaming happens when the memory and imagination parts of your brain are still awake．Experiments have shown that bad dreams may be caused by a stomachache．
Don't worry if you dream．Some great stories and poems were begun while the writers slept．
28．You would feel tired during sleep if youC．
A．move too often     
B．sleep on your back   
C．didn't move  
D．went to sleep late
29．Dreaming happens whenC．
A．you are in a deep sleep                    
B．y ou are not comfortable
C．part of our brain is still awake              
D．there's too much noise  in the room
30．The best title for this passage isB．
A．Why You Dream                    
B．The Strangeness of Sleep
C．What Happens During Sleep           
D．The Cause of Sleep．

Answer 1

分析 本文主要讲人为什么要睡觉？怎样才能睡得香呢？睡觉时为什么做梦呢？做梦要紧吗？

解答 28．C．细节理解题．由第3段第3句话You would feel tired if you didn't（move）可知如果在睡眠中你没有动你会感觉疲惫；故选C．
29．C．细节理解题．根据第四段Dreaming happens when the memory and imagination parts of your brain are still awake可知梦境总是发生在你的脑子还有部分清醒的时候；故选C．
30．B．主旨大意题．根据文章中的Sleep puzzles science和strange things happen during sleep可知本文主要讲了关于睡觉的一些内容，故答案选B．

点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．