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
Transplant surgeons work miracles. They take organs from one body and integrate them into another, granting the lucky recipient
Transplant surgeons work miracles. They take organs from one body and integrate them into another, granting the lucky recipient
admin
2010-05-26
60
问题
Transplant surgeons work miracles. They take organs from one body and integrate them into another, granting the lucky recipient a longer, better life. Sadly, every year thousands of other people are less fortunate, dying while they wait for suitable organs to be found. The terrible constraint on organ transplantation is that every life extended depends on the death of someone young enough and healthy enough to have organs worth transplanting. Such donors are few. The waiting lists are long, and getting longer.
Freedom from this constraint is the dream of every transplant surgeon. So far attempts to make artificial organs have been disappointing: Nature is hard to mimic. Hence the renewed interest in trying to use organs from animals.
Doctors in India have just announced that they have successfully transplanted a heart from a pig into a person. Pressure to increase the number of such "xenotransplants" (异种移植) seem to be growing. In Europe and America, herds of pigs are being specially bred and genetically engineered for organ donation. During 1996 at least two big reports on the subject—one in Europe and one in America were published. They agreed that xenotransplantation was permissible on ethical grounds, and cautiously recommended they be allowed.
The ethics of xenotransplantation are relatively unworrying. People already kill pigs both for food and for sport; killing them to save a human life seems, if anything, easier to justify. However, the science of xenotransplantation is much less straightforward.
Import an organ from one animal to another and you may bring with it any number of infectious diseases. That much is well known. However, coping with this danger is not merely a matter of screening for obvious ills such as parasites. Many diseases that could harm humans may be both undetectable and harmless in their natural hosts. Diseases that have been dormant for years may suddenly become active if they find themselves in a new environment, such as a human recipient’s body. After that, they may start to infect other people.
The danger of transplanting animal organs into humans is that______.
选项
A、it is considered ethically wrong
B、it may bring diseases into human bodies
C、it brings parasites into human bodies
D、it does more harm than good to humans
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/WMV7777K
0
大学英语四级
相关试题推荐
Bombaywasn’ttheidealplacetogetsick--notwhenmydoctor,family’andfriendswerehalfaworldaway.Iwasalone,quite
A、Becausetheirparentswantthemtosharethefamilyburden.B、Becausetheirparentsaretoostrictwith.themintheireducati
A、Thecottageistoobigforher.B、Sheisnotrichenoughtopayallthebills.C、ShegetsannoyedwithDavid.D、Nofamilyisn
FantasyFlight:ChiakiMukai,Japan’sFirstFemaleAstronautRaisedbyaworkingmotherinGunmaPrefecture,aplaceknownf
With950millionpeople,IndiarankssecondtoChinaamongthemostpopulouscountries.ButsinceChina【C1】______afamilyplan
With950millionpeople,IndiarankssecondtoChinaamongthemostpopulouscountries.ButsinceChina【C1】______afamilyplan
BoxingmatcheswereverypopularinEnglandtwohundredyearsago.Inthosedays,boxersfoughtwithbare【B1】______forprizemo
A、Marketing.B、Traveling.C、Computers.D、Customers.A
Todayitisperfectlynaturalforustoshakehandswhenwegreetsomeone,orsaygood-bye.Butlikesomanyotherthingswedo
A、Tocatnothing.B、Toworkhard.C、Tohavesurgery.D、Tocostalotofmoney.C
随机试题
取某药物1滴,加氯仿10ml,振摇,使溶解,取出2滴,加氯仿2ml与25%.三氯化锑的氯仿溶液0.5ml,即显蓝色,渐变成紫红色。该药物是
2015年6月,刘璋向顾谐借款50万元用来炒股,借期1个月,结果恰遇股市动荡,刘璋到期不能还款。经查明,刘璋为某普通合伙企业的合伙人,持有44%的合伙份额。对此,下列哪些说法是正确的?(2015年卷三第71题)
下列关于混凝土工程计量与支付的说法正确的是()。
民航自动气象观测设备各探测传感器安装在()。
用现金流贴现模型计算股票内在价值时,当计算的内在收益率小于必要收益率时,可以考虑购买这种股票。()
发行人运行不足3年的,应披露( )。
某企业生产的甲产品价目表上每件售价320元,若客户购买100件(含100件)以上可得到每件20元的商业折扣。2004年11月10日,某客户购买甲商品200件,协议规定的现金折扣条件为2/10,1/20,n/30,该企业于同年11月18日收到该笔款项,则应给
下列选项中,应以投放危险物质罪定罪处罚的有()(2012年一专一第45题)
已知学生的记录由学号和学习成绩构成,N名学生的数据已存入a结构体数组中。请编写函数fun,该函数的功能是:找出成绩最低的学生记录,通过形参返回主函数(规定只有一个最低分)。已给出函数的首部,请完成该函数。注意:部分源程序在文件PROG1.C中。
在“student”表中,“姓名”字段的字段大小为10,则在此列输入数据时,最多可输入的汉字数和英文字符数分别是()。
最新回复
(
0
)