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
2024-04-09
1
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/3547879.html
相关试题推荐
[originaltext]W:We’veallheardthesayingLaughteristhebestmedicine.How
[originaltext]IstudiedtobeanurseinEnglandandfinallycametotheUn
[originaltext]IstudiedtobeanurseinEnglandandfinallycametotheUn
[originaltext]IstudiedtobeanurseinEnglandandfinallycametotheUn
Ahappymarriageapparentlyisgoodmedicine,buthostilespousesmay【B1】___
Ahappymarriageapparentlyisgoodmedicine,buthostilespousesmay【B1】___
Ahappymarriageapparentlyisgoodmedicine,buthostilespousesmay【B1】___
[originaltext]W:We’veallheardthesaying"Laughteristhebestmedicine."Ho
[originaltext]W:We’veallheardthesaying"Laughteristhebestmedicine."Ho
[originaltext]W:We’veallheardthesaying"Laughteristhebestmedicine."Ho
随机试题
______wastoreturntoschool.A、ThatreallyinterestedhimB、Whatreallyintere
TheUnitedStatesDepartmentofEducationsaystherearemorethan2,400Ame
有抗震要求的长矩形多层砌体房屋,应优先采用()。Ⅰ.横墙承重;Ⅱ.纵墙承重;
红外探测法有效预报距离宜在()以内。A.30m B.50m C.80m
手术敷料高压蒸气灭菌的要求是A.121℃,20分钟 B.121℃~126℃,2
运输项目投资决策的基础工作是( )。 A.衡量经济成本 B.衡量系统
某班学生做完早操回到教室,忽然有人发出“哎哟”的叫声,老师发现原来有人在班干部的
“布拉格之春”的出现集中说明了()A.人民群众关心、支持改革 B.东欧国家力图
当承包单位未能按合同规定的工期完成合同范围内的工作时对其的处罚是( )。A.拒
应用建设工程项目管理信息系统的主要意义包括()。 A.可方便地形成各
最新回复
(
0
)