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  3. Most people who travel long distances complain of jetlag. Jetlag makes bus

Most people who travel long distances complain of jetlag. Jetlag makes bus

游客2023-11-21  50
问题       Most people who travel long distances 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 re- search. Dr. Martin Moore-Ede has【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.
      Data on a specific light itinerary and the individual’s sleep【C16】______ are used to produce a Trip Guide with【C17】______ on exactly when to be exposed to bright light. When the Trip Guide calls【C18】______ bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad,【C19】______ you are on an aeroplane, you can use a special light device to provide the necessary light【C20】______ for a range of activities such as reading, watching TV or working. [br] 【C4】
选项 A、regular
B、formal
C、continual
D、circular
答案 A
解析 regular意为“有规律的，规则的；整齐的，匀称的；定期的，固定的；常规的，经常的”，例如：Harry has completely reformed now —he’s stopped taking drugs and got a regular job．哈利已洗心革面——他不再吸毒并且找了一份固定工作。formal作“正式的；礼仪上的；形式上的”讲，例如： The formal negotiation between the two governments will commence next mo
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