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    6．Imagine the first days in a new time zone．Slow to respond to the（28）change，your body clock is confused．You're sleepy all day，but when it's time for bed，you can hardly fall asleep．Obviously you are（29）suffering fromjet lag（时差反应）．
    Travelers have traditionally fought this（30）problemwith sleeping pills or alcohol．There are actually healthier ways that can work just as （31）effectively．
    For example，the moment you get on the airplane，start （32）adjustingyour biological block to the destination's time．If it's daytime in your destination，try to stay（33）awake．Walking around the cabin（客舱） can be of help．When it's nighttime，try to sleep．In that case，eat before the flight，（34）oran empty stomach will prevent you from sleeping．These tips will help you start a new （35）cycleof sleep and wakefulness．

    28．A．flightB．changeC．demandD．climate
    29．A．suffering fromB．working onC．looking intoD．leading to
    30．A．dangerB．problemC．wasteD．fear
    31．A．brieflyB．slowlyC．suddenlyD．effectively
    32．A．checkingB．sendingC．adjustingD．stopping
    33．A．awakeB．aloneC．hungryD．calm
    34．A．thoughB．soC．wholeD．or
    35．A．understandingB．cycleC．researchD．trend．

    分析 本文是说明文，主要讲述了在旅行途中如何调节你的生物钟，上飞机前，开始调整你的生物钟到你的目的地的时间．如果你白天到目的地，试着要保持清醒，晚上试着去睡觉．在乘飞机之前要用餐，否则空腹会让你睡不着觉．这些建议有助于你开始一个新的睡眠和清醒的周期．

    解答 28．B    考查名词辨析        根据下文的"jetlag（时差反应）"可知，在旅行时要适应时差，因此选change表示"变化"，故选B．
    29．A    考查动词辨析        根据上文的"hardly fallasleep"可知，人们常常不能顺利地倒时差会导致时差反应，"suffer from   遭受…"，故选A．
    30． B    考查名词辨析       根据语境可知，一般旅行的人常常用安眠药或酒对付这种状况，"problem"指的是上文提到的不能入睡的难题，故选B．
    31． D    考查副词辨析       根据语境可知，作者在下文中给读者提出了有效的建议．justas effectively表示"同样有效地"，故选D．
    32． C    考查动词辨析      根据句中的"daytime"可知，上飞机前，开始调整你的生物钟到你的目的地的时间．"adjust…to…把…调整到…"，故选C．
    33． A    考查动词辨析      根据语境可知，如果你白天到目的地，试着要保持清醒，"stay awake保持清醒"，故选A．
    34． D    考查连词辨析      根据语境可知，在乘飞机之前要用餐，否则空腹会让你睡不着觉．这是一个"祈使句+and/or+陈述句"的句式，祈使句"eatbefore the flight"和"an empty stomach"是相反的，所以用or，故选D．
    35． D    考查连词辨析     根据语境可知，这些建议有助于你开始一个新的睡眠和清醒的周期．cycle表示"循环，周期"，故选D．

    点评 解答细节理解题时，一个常用的方法就是运用定位法，即根据题干和选项中的关键词从原文中找到相关的句子，与选项进行比较从而确定答案；推理判断题 既要求学生透过文章表面文字信息推测文章隐含意思，又要求学生对作者的态度、意图及文章细节的发展作正确的推理判断，力求从作者的角度去考虑，不要固守自己的看法或观点．

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