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
Just seven years ago, the Jarvik-7 artificial heart was being cheered as the model of human creativeness. The sight of Barney Cl
Just seven years ago, the Jarvik-7 artificial heart was being cheered as the model of human creativeness. The sight of Barney Cl
admin
2012-12-26
71
问题
Just seven years ago, the Jarvik-7 artificial heart was being cheered as the model of human creativeness. The sight of Barney Clark—alive and conscious after trading his diseased heart for a metal-and-plastic pump— convinced the press, the public and many doctors that the future had arrived. It hadn’t. After monitoring production of the Jarvik-7, and reviewing its effects on the 150 or so patients (most of whom got the device as a temporary measure) the U.S. Food and Drug Administration concluded that the machine was doing more to endanger lives than to save them. Last week the agency cancelled its earlier approval, effectively banning (禁止) the device.
The recall may hurt Symbion Inc., maker of the Jarvik-7, but it won’t end the request for an artificial heart. One problem with the banned model is that the tubes connecting it to an external power source created a passage for infection. Inventors are now working on new devices that would be fully placed, along with a tiny power pack, in the patient’s chest. The first sample products aren’t expected for another 10 of 20 years. But some people are already worrying that they’ll work—and that America’s overextended health-care programs will lose a precious $2.5 billion to $5 billion a year providing them for a relatively few dying patients. If such expenditures (开支) cut into funding for more basic care, the net effect could actually be a decline in the nation’s health.
The new models of artificial hearts are expected______.
选项
A、to have a working life of 10 or 20 years
B、to be set fully in the patient’s chest
C、to be equipped with an external power source
D、to create a new passage for infection
答案
B
解析
文章中第2段第3句提到,这种新仪器可以完全置于患者的胸腔内,B与之相符,故选B。A在文中并未提及;C、D说的对象是Jarvik-7,故也排除。
转载请注明原文地址:https://kaotiyun.com/show/14w7777K
0
大学英语四级
相关试题推荐
Internetuseappearstocauseadeclineinpsychologicalwell-being,accordingtoresearchatCarnegieMellonUniversity.Evenp
A、Themanshouldstopplayingtennis.B、Themanshouldtakeupanewhobby.C、Themanshouldsticktowhathe’sdoing.D、Theman
Whenyouhavetomeetsomeonefromadifferentculture,beprepared.Ifyouunderstandculturaldifferences,you’llbeabetter
Whenyouhavetomeetsomeonefromadifferentculture,beprepared.Ifyouunderstandculturaldifferences,you’llbeabetter
Gettingagoodnight’ssleephaslongbeenknowntoconsolidatetheday’smemories,movingthemfromshort-termstorageintolon
NewGraduationMath=SuccessforCommunityCollegesTheconceptofcommunitycollegesintheUnitedStatesdevelopedinthe
Atabriefingheldyesterdaytooutlineplansforanundergroundrepository(贮藏处)forhigh-activitynuclearwasteintheUnited
A、Makefulluseofthelibrary.B、Keepwriting.C、Askquestionswithoutshame.D、Discusswitheachother.A推理判断题。短文最后提到,为达到上文中提到
PeopleintheUScannowcarryanartificialintelligence(AI)aroundintheirpocket,whereitwaitspatientlytobetoldwhat
ArtificialIntelligence(AI)Weoftendon’tnoticeit,butartificialintelligence(AI)isallaroundus.Itispresentinc
随机试题
非特异性投射系统的功能是
用两种不同剂量的电离辐射照射小白鼠,第一种剂量照射25只,在照射后14天内死亡4只;第二种剂量照射18只,同时期内死亡5只。想知道这两种剂量对小白鼠致死作用是否相同,可选用的适当方法是()
A、食滞胃脘B、胃阴虚C、肝脾不调D、肝胃不和E、胃阳虚呕吐吞酸,胸胁胀满,嗳气频作,脘闷食少。其证候是
可减少支气管哮喘发作次数的药物是
法人信贷业务的流程主要有()。
甲快递公司使用“赫尔墨斯”商标已有5年,但一直未申请注册。乙快递公司最近也开始使用“赫尔墨斯”商标并拟将其申请注册。根据商标法律制度的规定,下列表述中,正确的是()。
下列关于企业全面风险管理的说法,错误的是()。
教师对学生的期望有时会或明或暗地传递给学生,并对其产生影响,这种效应是()。
在地方自治制警政管理体制中,警察受地方政府领导,中央政府只起监督作用。( )
有一个工厂共有大、小两个车间,每个车间各有三分之一的工人是熟练工,已知大、小两个车间人数原本相差90人。如果将两个车间里的熟练工对调,则大、小两个车间的人数比变为8:7。那么这个工厂一共有多少工人?
最新回复
(
0
)