2. 外语
  3. Most people who travel long distance complain of jetlag. Jetlag makes business travelers less productive and more prone【C1】_____

Most people who travel long distance complain of jetlag. Jetlag makes business travelers less productive and more prone【C1】_____

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问题     Most people who travel long distance complain of jetlag. Jetlag makes business travelers less productive and more prone【C1】______making mistakes. It is actually caused by【C2】______of your "body clock" —a small cluster of brain cells that controls the timing of biological【C3】______. The body clock is designed for a【C4】______rhythm of daylight and darkness, so that it is thrown out of balance when it【C5】______daylight and darkness at the "wrong" times in a new time zone. The【C6】______of jetlag often persist for days【C7】______the internal body clock slowly adjusts to the new time zone.
    Now a new anti-jetlag system is【C8】______that is based on proven【C9】______pioneering scientific research. Dr. Martin Mooreede had【C10】______a practical strategy to adjust the body clock much sooner to the new time zone【C11】______controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates【C12】______of the discomfort of jetlag.
    A successful time zone shift depends on knowing the exact times to either【C13】______or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule【C14】______light exposure depends a great deal on【C15】______travel plans.
【C3】
选项 A、actions
B、functions
C、behavior
D、reflection
答案B
解析 本句意为：“生物钟是指控制生理功能时间的脑细胞群。”A项actions意为“行为，行动”，通常指具体的“作为”。B项functions可以指人体，或者是机器的“运转，发挥功效”。C项behavior意为“举止，行为”，侧重于人们行事的方式。D项reflection意为“反射，沉思”，显然和本句意思不符。
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