Part IV Cloze (15 minutes)
As a physician who travels quite a lot, I spend a lot of time on planes listening for that dreaded “Is there a doctor on board?” announcement. I’ve been __71__ only once—for a woman who had merely fainted. But the __72__ made me quite curious about how __73__ this kind of thing happens I wondered what I would do if __74__ with a real midair medical emergency-with out access __75__ a hospital staff and the usual emergency equipment. So __76__ the New England Journal of Medicine last week __77__ a study about in –flight medical events. I read it __78__ interest.
The study estimated that there are a(n) __79__ of 30 in-flight medical emergencies on U.S. flights every day. Most of them are not __80__; fainting and dizziness are the most frequent complaints. __81__ 13% of them –roughly four a day—are serious enough to __82__ a pilot to change course. The most common of the serious emergencies __83__ heart trouble, strokes, and difficulty breathing.
Let’s face it: plane rides are __84__. For starters, cabin pressures at high altitudes are set at roughly __85__ they would be if you lived at 5,000 to 8,000 feet above sea level. Most people can tolerate these pressures pretty __86__, but passengers with heart disease __87__ experience chest pains as result of the reduced amount of oxygen flowing through their blood. __88__ common in-flight problem is deep venous thrombosis—the so-called economy class syndrome (综合症).__89__ happens, don’t panic. Things are getting better on the in-flight-emergency front. Thanks to more recent legislation, flights with at __90__ one attendant are starting to install emergency medical kits to treat heart attacks.
. 【題組】82.
(A) require
(B) inspire
(C) engage
(D) command
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