大学英语六级真题集训之完型填空篇.doc

1 Most people who travel long distances complain of jetlag (喷气飞行时差反应). Jetlag makes business travelers less productive and more prone __61__ making mistakes. It is actually caused by __62__ of your “body clock”-a small cluster of brain cells that controls the timing of biological __63__. The body clock is designed for a __64__ rhythm of daylight and darkness, so that it is thrown out of balance when it __65__ daylight and darkness at the wrong times in a new time zone. The __66__ of jetlag often persist for days __67__ the internal body clock slowly adjusts to the new time zone Now a new anti-jetlag system is __68__ that is based on proven __69__ pioneering scientific research. Dr. Martin Moore-Ede has __70__ a practical strategy to adjust the body clock much sooner to the new time zone __71__ controlled exposure to bright light, The time zone shift is easy to accomplish and eliminates __72__ of the discomfort of jetlag. A successful time zone shift depends on knowing the exact time to either __73__ or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule __74__ light exposure depends a great deal on __75__ travel plans. Data on a specific flight itinerary (旅行路线) and the individual’s sleep __76__ are used to produce a Trip Guide with __77__ on exactly when to be exposed to bright light. When the Trip Guide calls __78__ bright light you should spend time outdoors if possible. If it is dark out-side, or the weather is bad, __79__ you are on an aeroplane, you can use a special light device to provide the necessary light __80__ for a range of activities such as reading, watching TV or working.  61. A) for B) from C) to D) of（）  2 In the United States, the first day nursery, was opened in 1854. Nurseries were established in various areas during the __61__ half of the 19th century; most of __62__ were charitable. Both in Europe and in the U.S., the day nursery movement received great __63__ during the First World War