2. 外语
  3. Millions of people travel by plane every single day. If you’re planning on being one of them soon, you might not be looking forw

Millions of people travel by plane every single day. If you’re planning on being one of them soon, you might not be looking forw

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问题    Millions of people travel by plane every single day. If you’re planning on being one of them soon, you might not be looking forward to the【C1】______feeling air travel often leaves you with.
   Besides the airport crowds and stress, traveling at a high altitude has real effects on the body. Although the pressure of the cabin is【C2】______to prevent altitude sickness, you could still【C3】______sleepiness or a headache. The lower oxygen pressure found in an aircraft cabin is【C4】______to that at 6,000-8,000 feet of altitude. A drop in oxygen pressure can cause headaches in certain【C5】______. To help prevent headaches, drink plenty of water, and avoid alcohol and coffee.
   Airplane food might not really be as tasteless as you【C6】______thought. The air you breathe in a plane dries out your mouth and nose, which can affect your sense of taste. Perception of sweet and salty foods dropped by almost 30 percent in a simulation of air travel. However, you can make your taste buds active again by drinking water. A dry mouth may【C7】______taste sensitivity, but taste is restored by drinking fluids.
   Although in-flight infections【C8】______in dry environments like airplanes, your risk of getting sick from an airplane is actually low because of the air【C9】______used. Unless you’re sitting next to someone who is coughing or sneezing, you shouldn’t worry too much about getting sick. However, bacteria have been shown to live on cabin surfaces, so wash your hands【C10】______.
   A) adjusted F) frequently K) reduce
   B) channels G) individuals L) renovated
   C) equivalent H) originally M) smooth
   D) experience I) particular N) thrive
   E) filters J) primarily O) unpleasant
【C5】
选项
答案G
解析 [语法判断]空格前是形容词certain，因此应填入名词。[语义判断]空格所在句指出，氧气压的下降会导致______头疼。由常识可知，肯定是飞机上的乘客感到头疼，因此空格处应填入含有“人，乘客”意义的名词，故本题答案为individuals。
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大学英语四级

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