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33、2006年辽宁省十一市课改实验区 A strange thing happens to nearlyeverybody at night. They 61the lights pull up the covers and close their eyes.After they sleep for six or seven 62 ,they wake up again. It sounds very strange, doesnt it? Sleep puzzles（使困惑）science all the time. 63and doctors would like to talk about why one cant fallasleep. They are not so sure 64causes sleep. You will sleep the best both65 you are in good healthand when you dont eat too much or too little. No worries and a comfortableplace to sleep are 66 , too. They adviseagainst two in one bed. Strange things67 during sleep. Forexample, you often move during your sleep. You would feel68 if you didnt move. Youalso 69 . Part of yourbrain（大脑）is still 70when you dream. Dont worry if you dream. Some greatstories and poems were finished while their writers weredreaming. 61. A. turn onB.turn offC. turn up D. turn down 62. A. secondsB.hoursC. days D. months 63. A. Scientists B. Nurses C. ArtistsD.Inventors 64. A. whyB.howC. which D. what 65. A. afterB.whenC. before D. until 66. A. pleasedB.possibleC. important D. funny 67. A. happenB.happensC. happened D. happening 68. A. hungryB.tiredC. relaxed D. worried | 
