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
职业资格
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
2015-04-27
97
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. Biological death occurs when changes in the organism lead to the disintegration 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 sleep. By slowing down the body’s metabolism, 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.
This passage focuses on______.
选项
A、the difference between biological and clinical death
B、the process of dying
C、prolonging the period of clinical death
D、the nature of clinical death
答案
C
解析
本文第一段介绍了死亡的两个过程—临床死亡和生物死亡,以及各自的特征。第二段讲述科学家在寻找方法尽量在生物死亡到来之前延长临床死亡,结果发现最好的办法就是冷冻法,以及冷冻法延长临床死亡的机理。第三段详细介绍了一个实验,讲述了冷冻法如何延长临床死亡以使机体恢复生机。由此可知全文的焦点是如何延长临床死亡,答案为C。
转载请注明原文地址:https://kaotiyun.com/show/kgCv777K
本试题收录于:
英语学科知识与教学能力题库教师资格分类
0
英语学科知识与教学能力
教师资格
相关试题推荐
WhichofthefollowingsetsofphoneticfeaturescharacterizestheEnglishphoneme?
MoveoverMethuselah.FuturegenerationscouldbelivingwellintotheirsecondcenturyandstilldoingSudoku,iflifeexpectan
______maybedefinedasanykindofengagingwiththelanguageonthepartofthelearners,usuallyundertheteacher’ssupervis
Inalisteningactivity,studentsareaskedtonotedownthetimeandplacesofevents.Theaimofthisactivityistodevelopt
______enoughtimeandmoney,theinvestigatorswouldhavebeenabletodiscovermoreevidenceinthiscase.
WhatpurposedoesNOTpost-listeningactivitiesserve?
Theprocessofperceivingothersisrarelytranslated(toourselvesorothers)intocold,objectiveterms."Shewas5feet8inc
Backintheolddays,whenIwasachild,wesataroundthefamilyroundtableatdinnertimeandexchangedourdailyexperience
—______hemanagedtogettheinformation?—Oh,afriendofhishelpedhim.
Whichofthefollowingpairsofwordsisnotaminimalpair?
随机试题
肠结核的好发部位是
心交感神经节后纤维释放的神经递质是
乳腺癌化疗病人最优先的护理诊断
下列各级数中发散的是()。
下列属于劳动教养人民警察队伍建设的主要内容的是()。
中国营造学杜
页式存储管理方案中,若地址用20位二进制表示,页内地址部分占8个二进制位,则最大允许进程有多少个页面?()
以下关于return语句的叙述中正确的是
DDT,themostpowerfulpesticidetheworldhadeverknown,exposednature’svulnerability.Unlikemostpesticides,whicheffecti
素质教育
最新回复
(
0
)