Flying is the safest way to travel-or is it?Some doctors think the aeroplane is a dangerous place.especially for the old and the unhealthy．Although the aeroplane is the pressurized.there is less oxyg 题目和参考答案——青夏教育精英家教网—

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9．Flying is the safest way to travel…or is it？Some doctors think the aeroplane is a dangerous place，especially for the old and the unhealthy．
Although the aeroplane is the pressurized，there is less oxygen than on the ground．Anyone with heart disease or a lung problem notices the difference much sooner．Even the healthy people find it difficult to concentrate after hours of breathing less oxygen than usual．So anyone who has had a heart attack should not fly for at least two weeks after the attack．
Because of changes of pressure，pregnant women shouldn't take a flight lasting four hours after their thirty-fifth week or a short flight after 36weeks．People with bad colds will probably get earache during take-off and landing．
Even if you feel well when you get on the plane，you will possibly feel ill when you get off．Sitting on the plane for hours-especially in economy class where there isn't very much leg room-gives anyone aches and pains．Most of the air you breathe is recycled so you will possibly catch a cold or flu from one of the other passengers．
Flying also causes dehydration．Everyone needs to drink more in the air，but you shouldn't drink alcohol because it makes you even more thirsty．
The most common problem is jet lag．But there isn't much you can do to prevent it．You should change to your new time zones as soon as possible and you shouldn't sleep if it's still daylight．
Crowded airport，long queues and delays cause stress and high blood pressure．So，be careful!Flying is the safest way to travel，but is it the healthiest？

63．What does the underlined word"dehydration"mean？B
A．胃胀 B．脱水 C．腹痛 D．偏头痛
64．We can conclude from the passage thatC．
A．There is enough space for every passenger on a flight in economy class
B．Pregnant women shouldn't take a flight because it does harm to their babies
C．Passengers with heart disease on a flight feel pressured sooner than healthy people
D．People will feel ill when the aeroplane takes off
65．When sitting on the plane，which of the following symptoms do you possibly have？A
①breathe uneasily ②have earache ③feel stressed ④feel thirsty ⑤cause high blood pressure
A．①②④B．②③⑤C．①②⑤D．②③④
66．The passage is probably taken fromC．
A．a newspaper B．a guide book C．a science magazine D．a story book．

分析本文属于说明文阅读，作者通过这篇文章主要向我们描述了飞行虽然是最安全的旅行方式，但不是最健康的，病人不适合飞行，健康人在长时间飞行中也会感到不适．

解答 63．B．词义猜测题．根据第四段"Flying also causes dehydration．Everyone needs to drink more in the air"飞行也会导致脱水，每个人都需要在空气中多喝水；可知意为脱水；故选B．
64．C．细节理解题．根据第二段：Anyone with heart disease or a lung problem notices the difference much sooner可知航班上患有心脏病的乘客比健康人更早感到压力；故选C．
65．A．细节理解题．根据第二段第三段可知坐在飞机上，你可能有呼吸不畅，耳痛，口渴等症状；故选A．
66．C．主旨大意题．通读全文，可知文章主要讲飞行虽然是最安全的旅行方式，但不是最健康的，病人不适合飞行，健康人在长时间飞行中也会感到不适；可知文章来自科学杂志；故选C．

点评考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．

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