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  3. Most people who travel long distance complain of jet-lag. Jet-lag makes business travelers less productive and more prone 【21】_

Most people who travel long distance complain of jet-lag. Jet-lag makes business travelers less productive and more prone 【21】_

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问题      Most people who travel long distance complain of jet-lag. Jet-lag makes business travelers less productive and more prone  【21】______   making mistakes.  It is actually caused by  【22】______   of your "body clock" a small cluster of brain cells that controls the timing of biological  【23】______   . The body clock is designed for a  【24】______   rhythm of daylight and darkness, so that it is thrown out of balance when it  【25】______   daylight and darkness at the "wrong" times in a new time zone. The  【26】______   of jet-lag often persist for days  【27】______   the internal body clock slowly adjusts to the new time zone.
     Now a new anti-jet-lag system is  【28】______   that is based on proven  【29】______   pioneering scientific research. Dr. Martin Moore-Ede had  【30】______   a practical strategy to adjust the body clock much sooner to the new time zone  【31】______   controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates  【32】______   of the discomfort of jet-lag.
     A successful time zone shift depends on knowing the exact times to either  【33】______   or avoid bright light.  Exposure to light at the wrong time can actually make jet-lag worse. The proper schedule  【34】______   light exposure depends a great deal on  【35】______   travel plans.
     Data on a specific flight itinerary and the individual’s sleep  【36】______   are used to produce a Trip Guide with  【37】______   on exactly when to be exposed to bright light.
     When the Trip Guide calls  【38】______   bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad,  【39】______   you are on an aeroplane, you can use a special light device to provide the necessary light  【40】______   for a range of activities such as reading, watching TV or working.
【35】
选项 A、specific
B、complicated
C、unique
D、peculiar
答案A
解析 从上下文可知，此处需填入一个和individual“个人的”相似的形容词。compulicated意为“复杂的”，与原文毫无关系；unique表示“独一无二的，无双的”，侧重于事物鲜明并有别于其他事物的个体特征；peculiar表示“特别的，独具的”，侧重于“奇怪的，怪异的”，带有贬义；specific可以用来表示“特定的，具体的”，用在此处最贴切，此外还可表示“详细的，明确的，特定的”。
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