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
Modern scientists divide the process of dying into two stages-clinical or temporary death and biological death. Clinical death o
Modern scientists divide the process of dying into two stages-clinical or temporary death and biological death. Clinical death o
admin
2012-08-10
38
问题
Modern scientists divide the process of dying into two stages-clinical or temporary death and biological death. Clinical death occurs when the vital organs, such as the heart or lungs, have ceased to function, but have not suffered permanent damage. The organism can still be revived (复活). Biological death occurs when changes in the organism lead to the disintegration (解体) of vital cells and tissues. Death is then irreversible and final.
Scientists have been seeking a way to prolong the period of clinical death so that the organism can be revived before biological death occurs. The best method developed so far involves cooling of the organism, combined with narcotic(麻醉的) sleep. By slowing down the body’s metabolism(新陈代谢), cooling delays the processes leading to biological death.
To illustrate how this works, scientists performed an experiment on a six-year-old female monkey called Keta. The scientists put Keta to sleep with a narcotic. Then they surrounded her body with ice-bags and began checking her body temperature. When it had dropped to 28 degrees the scientists began draining blood from its body. The monkey’s blood pressure decreased and an hour later both the heart and breathing stopped; clinical death set in. For twenty minutes Keta remained in this state. Her temperature dropped to 22 degrees. At this point the scientists pumped blood into its body in the direction of the heart and started artificial breathing. After two minutes the monkey’s heart became active once more. After fifteen minutes, spontaneous breathing began, and after four hours Keta opened her eyes and lifted her head. After six hours, when the scientists tried to give her a penicillin injection, Keta seized the syringe and ran with it around the room. Her behavior differed little from that of a healthy animal.
The best statement of the main idea of this passage is that______.
选项
A、modern scientists divide the process of dying into clinical and biological death
B、biological death occurs when vital organs have suffered permanent damage
C、scientists have found a way to prolong the period of clinical death
D、cooling delays the processes leading to biological death
答案
C
解析
可定位在整篇文章,第1段解释了两种不同死亡阶段——临床死亡和生物死亡,第2段强调科学家们一直在寻找(have been seeking)一种方式来延长临床死亡的时间,通过冷却有机体和麻醉睡眠可实现,第3段描述对猴子Keta的具体实验过程,并在段首说明科学家们做此实验的目的是为了“illustrate how this works(举例说明上述结论是如何产生的)”,故正确选项为C,意为“科学家们已经找到一种方式来延长临床死亡时间”。
转载请注明原文地址:https://kaotiyun.com/show/U357777K
0
大学英语四级
相关试题推荐
Theentertainmentprofession,orshowbusiness,attractsmanyyoungpeople.【B1】______,onlyveryfewcanhopetobecomefamousa
A、Threetypesofnoisethatcanmakecommunicationdifficult.B、Themeaningofexternalnoise.C、Theeffectofcigarettesmoke.
A、Theunsmilingfaces.B、Thesun.C、Theresidents.D、Theweather.D题目询问女士好像不喜欢伦敦的什么。关键是听到女士说“太阳从不露笑脸,天总是灰蒙蒙的”,可判断选项D(天气)正确。
AndrewCarnegie,knownastheKingofSteel,builtthesteelindustryintheUnitedStates,and,intheprocess,becameoneoft
Themodernworldcouldnotoperatewithoutroads.Itisawayoflifewithalmosteveryfamilyinthewesternworldowningan
Askedtonametheirfavoritecity,manyAmericanswouldselectSanFrancisco.SanFranciscobeganasa【S1】______Spanishoutpost
Boy,tourismreallyisabigbusinessthesedays.It’s【B1】______.Itinvolveshotels,transportation,restaurants,shops,andth
A、Howthemanfeelsaboutthenews.B、Whetherthemanhasthemoney.C、Ifthemanwilllosehisjob.D、Whenthemanwillleave.
Withthedebateonlydaysaway,bothpresidentialcampaignssoughttoreinforcenegativeimagesoftheir______.
A、Worried.B、Cheerful.C、Confident.D、Angry.A根据女士提到的anightmare(一场噩梦)以及couldn’tfigureouttheanswer(想不出答案)可推断出,女士很担心她的期末考试,故答
随机试题
Evenifyouareagoodhigh-jumper,youcanjumponlyaboutsevenfeetofftheground.Youcannotjumpanyhigherbecausetheea
阅读材料,回答问题。材料1从2014年起,国家将每年10月17日设立为“扶贫日”。10月17日也是国际消除贫困日。1992年12月,联合国通过了将10月17日设为国际消除贫困日的决议,旨在促进全世界尤其是发展中国家的减贫意识。改革开放
He______hishomeworkyesterday,sohecouldn’tjoinusinouting.
使用谷氨酰胺的类似物作抗代谢物,不能阻断核酸代谢的哪些环节
自诉案件在下列哪些情形下,人民法院应当说服自诉人撤回起诉或者裁定不予受理?
城市总体规划阶段的城市设计是研究城市总体空间形体环境的布局工作;在修建性详细规划阶段的城市设计是研究()的具体项目的空间形体环境的定位工作。
某工程实行总承包,则关于其工程文件的移交,下列做法中,符合国家有关规定的有()
寄销的具体操作方式有()。
当企业需要对大量的、复杂的岗位进行薪酬调查时应考虑选择()的方式。
(多选)以下说法正确的是()。
最新回复
(
0
)