首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies
A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies
admin
2017-02-01
51
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.
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://kaotiyun.com/show/RKF7777K
0
大学英语六级
相关试题推荐
A、Itsreformindesign.B、Itstargetatyoungpeople.C、Itsimaginativedesignandinexpensive.D、Itspracticaldesignandaffor
Foryears,scientistshavebeenstudyinghowmusicaffectsthebrainanditsfunctions.Classicalmusic,【B1】______songsbyMoza
Inthe1980s,homeschoolingmadeacomebackintheU.S.whenreligiouslyconservativeparentsconvincedstatestoapproveandgi
A、Massproduction.B、Medicalcare.C、Safetymeasures.D、Laborpractices.D
A、HewouldliketotakeFrontStreet.B、Theradioannouncerisalwaystellinglies.C、ThetrafficinFrontStreetmaybebusy.D
A、Peoplearedrivingcarswithelectricity.B、Scientistsareproducingcleanerenergies.C、Factoriesareinstallingsmoke-cleani
A、Helikedwritingwhenhewasachild.B、HeenjoyedreadingstoriesinReader’sDigest.C、HeusedtobeaneditorofReader’sD
A、TravelinginSouthAfricatoseekmedicalhelp.B、PromotingawarenessandpreventionofAIDS.C、Visitingclientsandsigningc
A、Waitandseehowshefeelsin24hours.B、Gohomeimmediatelyandtakesomemedicine.C、Returntothegrocerystoretopickup
A、Hewantedtherailroadtobedeveloped.B、Hewantedtohaveamorepowerfulsteamengine.C、Hewantedtoownthelandnearthe
随机试题
胆小管()
影响国际资本流动的短期因素包括______、________、__________。
某女,40岁,患“子宫肌瘤”入院,准备在硬膜外麻醉下行“子宫全切除术”。
肝经风热者易出现
根据《建筑工程施工专业分包合同(示范文本)》(GF-2003-0213),承包人应在收到分包工程竣工结算报告及结算资料后()日内结算工程结算价款。
王某在甲银行开立了一个按Ⅱ类户管理的个人银行账户,王某可以通过该账户办理的事项有()。
近日,沈阳市总工会向媒体证实,经层层选举、推荐、申报,小沈阳成为该市获表彰的、艺术传播领域仅有的两名“五一劳动奖章”获得者之一。对此网友议论纷纷。国内一家知名网站的调查显示。有70%多的网民不赞成明星入选劳模。其实原因很简单,评选劳模毕竟不是选秀。体育和演
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
根据以下文字材料回答问题。2009年,中国农业生产在国家继续加大支农政策力度的作用下,克服不利气候条件的影响,实现了稳步的增长。据国家统计局公布的统计数据显示,2009年第一产业增加值35477亿元(包括农林牧渔服务业),比上年实际增长
已知a:b=c:d,试证:ab+cd是a2+c2和b2+d2的比例中项.
最新回复
(
0
)