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
考研
Artificial hearts have long been the stuff of science fiction. In "Robocop", snazzy cardiac devices are made by Yamaha and Jense
Artificial hearts have long been the stuff of science fiction. In "Robocop", snazzy cardiac devices are made by Yamaha and Jense
admin
2011-04-12
43
问题
Artificial hearts have long been the stuff of science fiction. In "Robocop", snazzy cardiac devices are made by Yamaha and Jensen, and in "
Star Trek
", Jean-Luc Picard, captain of the Enterprise, has one implanted in the year 2328. In the present day, however, their history has been more chequered. The first serious attempt to build one happened in the 1980s, when Jarvik-7, made by Robert Jarvik, a surgeon at the University of Utah, captured the world’s attention. But Jarvik-7 was a complicated affair that needed to be connected via tubes to machines outside the body. The patient could not go home, nor even turn around in bed. Various other designs have been tried since, but all were seen as temporary expedients intended to tide a patient over until the real thing became available from a human donor.
That may be about to change. This week, America’s Food and Drug Administration gave its approval to a new type of artificial heart made by Abiomed, a firm based near Boston. The agency granted a "humanitarian device exemption", a restricted form of approval that will allow doctors to implant the new device in people whose hearts are about to fail but who cannot, for reasons such as intolerance of the immunosuppressive drugs needed to stop rejection, receive a transplant. Such people have a life expectancy of less than a month, but a dozen similarly hopeless patients implanted with Abiomed’s heart survived for about five months.
Unlike Dr. Jarvik’s device, this newfangled bundle of titanium and polyurethane aims to set the patient free. An electric motor revolving up to 10,000 times a minute pushes an incompressible fluid around the Abiomed heart, and that fluid, in turn, pushes the blood—first to the lungs to be oxygenated, and then around the body. Power is supplied by an electric current generated in a pack outside the body. This induces current in the motor inside the heart. All diagnostics are done remotely, using radio signals. There are no tubes or wires coming out of the patient.
The charger is usually plugged into the mains, but if armed with a battery it can be carried around for hours in a vest or backpack, thus allowing the patient to roam freely. Most strikingly, the device’s internal battery can last half an hour before it needs recharging. That allows someone time to take a shower or even go for a quick swim without having to wear the charger.
Abiomed’s chairman, Michael Minogue, does not claim that his firm’s product will displace human transplants. Even so, the firm has big ambitions. It is already developing a new version that will be 30% smaller (meaning more women can use it) and will last for five years. That should be ready by 2008— 320 years earlier than the writers of "Star Trek" predicted.
It can be inferred from the second paragraph that______.
选项
A、the regulatory approval is limited with respect to the scope of application
B、the life expectancy will not be improved compared with that indicated by the current record
C、America’s Food and Drug Administration gave its approval to a new type of artificial heart
D、Doctors will implants the new device in patients whose hearts are about to fail
答案
A
解析
这是一道细节分析题,测试考生对原文中细微信息的准确识别与理解。本题的答案信息来源在第二段的第二、三句,尤其是第三句中的“a restricted form of approval”(一种局限性的准许形式),暗示“相关准许是在一定范围之内的准许,是一种受到某种限制的准许,并非绝对的准许”。由此可以推断本题的答案应该是选项A。考生在阅读时对原文中的修饰限定性词语要认真对待和理解。
转载请注明原文地址:https://kaotiyun.com/show/dFp4777K
0
考研英语一
相关试题推荐
AllAmericansareatleastvaguely(1)_____withthe(2)_____oftheAmericanIndian.CutbacksinfederalprogramsforIndiansh
Theauthor’spresentationofAtlantans’car-dependenceismeantWhichofthefollowingisNOTmentionedinthetext?
Wecanknowfromthefirstparagraphthat______.Accordingtothesecondparagraph,itcanbefoundbyresearchersthat______.
ItwasinevitablethatanyofPresidentGeorgeW.Bush’sfanshadtobeverydisappointedbyhisdecisiontoimplementhightari
Healthcareisanextraordinarilyobsoletesystem.Aprofessorofemergencymedicineatmajoruniversitysentmeareallyheartb
Bothcommonsenseandresearchsaymemorydeclinesovertime.Theaccuracyofrecallandrecognitionareattheirbestimmediate
Althoughthetotalpercentageofdailysmokersisfallinginmostcountries,anewinternationalstudyshowsthatsixpeopledie
IntheUnitedStates,______farmsfeed200millionAmericansplustheequivalentofanother160millionpeoplearoundtheworld,
Thecellphone,adevicewehavelivedwithformorethanadecade,offersagoodexampleofapopulartechnology’sunforeseensi
ManyparentswhowelcometheideaofturningofftheTVandspendingmoretimewiththefamilyarestillworriedthatwithoutTV
随机试题
关于轻钢龙骨罩面板施工工艺的说法,正确的有()。
坐位前屈时脊柱负荷是立位的
长度大于()的隧道应设置照明设施。
我国古代城市规划的特点有哪些?
请讲一件你在生活或学习中做得成功的事。当时是什么情况?你是怎么做的?有何体会?请讲得尽可能详细一些。【追问】最后结果是什么?别人怎么评价?你自己怎么评价?你从中获得到了什么经验,或得到了什么教训?
和平发展就意味着不是通过战争手段强大起来。但是,和平并不意味着不用军事手段。如果在和平发展的过程中没有军事手段来支撑,和平发展也就无从谈起,发展也就不会在和平中进行。如何利用军事手段促进与其他国家的合作,是中国和平发展过程中,一个十分重要的问题,我们也应该
科举制(南京大学2011年中国古代史复试真题)
Clothesplayacriticalpartintheconclusionswereachbyprovidingcluestowhopeopleare,whotheyarenot,andwhotheywo
Consumersdeprivedoftheinformationandadvicetheyneededwerequitesimply______everycheatinthemarketplace.
Whichofthefollowingbeststatesthemainideaofthepassage?Whichisthefollowingstatementsaboutthefirsttwodefiniti
最新回复
(
0
)