2. 外语
  3. A. while B. dark C. devised D. whereas E. specific F. agreeable G. regular H. stimu

A. while B. dark C. devised D. whereas E. specific F. agreeable G. regular H. stimu

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问题     A. while        B. dark           C. devised        D. whereas        E. specific
    F. agreeable    G. regular        H. stimulus       I. disruption     J. attain
    K. seek         L. instructions   M. spur           N. formal         O. available
    Most people who travel long distances complain of jetlag. Jetlag makes business travelers less productive and more prone to making mistakes. It is actually caused by【C1】________ of your "body clock"—a small cluster of brain cells that controls the timing of biological functions. The body clock is designed for a【C2】________ rhythm of daylight and darkness, so that it is thrown out of balance when it encounters daylight and darkness at the wrong times in a new time zone.
    The symptoms of jetlag often persist for days【C3】________ the internal body clock slowly adjusts to the new time zone. Now a new anti-jetlag system is【C4】________ that is based on proven extensive pioneering scientific research.
    Dr. Martin Moore-Ede has【C5】________ a practical strategy to adjust the body clock much sooner to the new time zone through controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates most of the discomfort of jetlag. A successful time zone shift depends on knowing the exact time to either【C6】________ or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule for light exposure depends a great deal on【C7】________ travel plans. Data on a specific flight itinerary and the individual’s sleep pattern are used to produce a Trip Guide with 【C8】________ on exactly when to be exposed to bright light. When the Trip Guide calls for bright light you should spend time outdoors if possible. If it is【C9】________  outside, or the weather is bad, or you are on an aeroplane, you can use a special light device to provide the necessary light【C10】________ for a range of activities such as reading, watching TV or working.
【C2】
选项
答案G
解析 空格应填入形容词修饰rhythm。根据下一句的thrown out of balance(失去平衡)，at the wrong times in a new time zone(在新的时区，错误的时间里)，得知生物钟在新的时区和错误的时间会失衡，反过来理解，生物钟是“昼夜节律有规律运作的”，regular“有规律的”符合这个意思。
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