首页
登录
职称英语
A study published in the New England Journal of Medicine estimated that ther
A study published in the New England Journal of Medicine estimated that ther
游客
2024-04-03
31
管理
问题
A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies on U.S. flights every day. Most of them are not grave; fainting, dizziness and hyperventilation(换气过度)are the most frequent complaints. But 13% of them—roughly four a day—are serious enough to require a pilot to change course. The most common of the serious emergencies include heart trouble(46%), strokes and other neurological problems(18%), and difficult breathing(6%).
Let’s face it: plane riders are stressful. For starters, cabin pressures at high altitudes are set at roughly what they would be if you lived at 5,000 to 8,000 feet above sea level. Most people can tolerate these pressures pretty easily, but passengers with heart disease may experience chest pains as a result of the reduced amount of oxygen flowing through their blood. Low pressure can also cause the air in body cavities to expand—as much as 30%. Again, most people won’t notice anything beyond mild stomach cramping. But if you’ve recently had an operation, your wound could open. And if a medical device has been implanted in your body—a splint, a tracheotomy(气管切开术)tube or a catheter(导管)—it could expand and cause injury.
Another common in-flight problem is deep venous thrombosis(深静脉血栓)—the so-called economy-class syndrome. When you sit too long in a cramped position, the blood in our legs tends to clot. Most people just get sore calves. But blood clots, left untreated, could travel to the lungs, causing breathing difficulties and even death. Such clots are readily prevented by keeping blood flowing; walk and stretch your legs when possible.
Whatever you do, don’t panic. Things are looking up on the in-flight-emergency front. Doctors who come to passengers’ aid used to worry about getting sued; their fears have lifted somewhat since the 1998 Aviation Medical Assistance Act gave them "good Samaritan" protection. And thanks to more recent legislation, flights with at least one attendant are starting to install emergency medical kits with automated defibrillators(电击去颤器)to treat heart attacks.
Are you still wondering if you are healthy enough to fly? If you can walk 150 ft. or climb a flight of stairs without getting winded, you’ll probably do just fine. Having a doctor close by doesn’t hurt, either. [br] The phrase "getting winded"(Line 2, Para. 5)is closest in meaning to ______.
选项
A、falling over
B、being out of breath
C、spraining the ankle
D、moving in a curving line
答案
B
解析
末段第2句指出了测试身体是否足够健康去乘坐飞机的方法,结合全文中提到的飞机中气压低、含氧量低的特点,可以推断getting winded应指“喘气”,即选项B。
转载请注明原文地址:https://tihaiku.com/zcyy/3539642.html
相关试题推荐
[originaltext]The2016NobelPeacePrizeformedicinehasbeenawardedtoa
[originaltext]The2016NobelPeacePrizeformedicinehasbeenawardedtoa
[originaltext]The2016NobelPeacePrizeformedicinehasbeenawardedtoa
中医(TraditionalChineseMedicine)是中华文化不可分割的一部分,为振兴华夏做出了巨大的贡献。如今,中医和西医(western
AstudypublishedintheNewEnglandJournalofMedicineestimatedthatther
AstudypublishedintheNewEnglandJournalofMedicineestimatedthatther
IwenttoaCatholicboysschoolinBlackpoolintheNorthofEngland.Inmy
IwenttoaCatholicboysschoolinBlackpoolintheNorthofEngland.Inmy
IwenttoaCatholicboysschoolinBlackpoolintheNorthofEngland.Inmy
IwenttoaCatholicboysschoolinBlackpoolintheNorthofEngland.Inmy
随机试题
[originaltext]W:WhydoesLindahavetospendsomuchtimeinthelibrary?M:T
占有重要地位occupyavitalplace;playallimportantpart
Don’tworryaboutyourchild,histemperatureisonlyslightlyabove______.A、av
下列关于建设用地使用权的的说法,正确的是( )。A.权利主体具有任意性 B.
Aprojectisa[temporary]()ofunique,co
试回答涂层理化性能试验的问题。(4)试验用试剂有()。A.NaOH(化学纯)
关于乳腺癌的发病特点,正确的是()。A.25岁前多发 B.营养不良会增加发病
“不合宜者,渐渐澌灭,其合宜者,得以永存,此谓天道自然之理。但其说与耶稣之旨相反
鼠害的防治的主要方法有()。A:防鼠B:化学灭鼠C:器械灭鼠D:生物灭鼠
A.疖 B.痈 C.丹毒 D.急性蜂窝织炎 E.脓肿由溶血性链球菌引起的
最新回复
(
0
)