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
46
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
根据下列材料设计教学片段:(1)《普通高中历史课程标准(实验)》规定:了解近代以来人们物质生活和社会习俗变化的史实.探讨影响其变化的因素。(2)课文摘录鸦片战争以后,西方列强在中国通商口岸设厂、开店、办银行,还舶来一些洋货,西方文化逐步渗透到国民生活
WhichofthefollowingmaterialsisNOTappropriateforateachertouseinlisteningpractice?
根据提供的信息和语言素材设计教学方案,用英文作答。设计任务:请阅读下面学生信息和语言素材,设计一节英语读写课教学方案。教案没有固定格式,但须包含下列要点:teachingobjectivesteachingcon
WhenateacherteachesyounglearnersEnglishpronunciation,heshould______.
______forthefactthatshebrokeherleg,shemighthavepassedtheexam.
AIDSissaid______thenumber-onekillerofbothmenandwomenoverthepastfewyearsinthatregion.
______arenotaminimalpairinEnglish.
Youcan’tpredicteverything.Oftenthingsdon’t______asyouexpect.
Studentsareofferedwithopportunitiestointegratewhattheylearnedfromthetextintotheirexistingknowledgeandcommunica
WhathappenedtoMr.Zhu?Hespokein______voiceintoday’sclassthatIcouldhearalmostnothing.
随机试题
多形渗出性红斑属于A.感染性疾病B.传染性疾病C.变态反应性疾病D.遗传性疾病E.自身免疫性疾病
A.1:1B.2:lC.3:1D.5:1E.7:1麦门冬汤中麦门冬和半夏的比例为
连翘与女贞子的共同点有
相关部门破获了一起非法生产治疗仪的案件。这种名为“SE-纳米波治疗仪”的所谓医疗器械,对外宣传时吹嘘称该仪器包含通便排毒、消脂减肥、创口愈合等功效,甚至还对10多种病有改善作用。但相关人员在检查后发现,“SE-纳米波治疗仪”没有进行医疗器械的注册,没有医疗
对会计档案的管理要做好()工作,重要的档案备双份,放不同的地方。
远期汇票使用的一般程序有()。
关于非全日制用工的说法,正确的是()。
()是学生学习活动中一种自觉能动的心理状态,是学生主动学习、积极思维、探索知识的内在动力。
警告是最轻的处罚、罚款是最常见的处罚、拘留是最严厉的处罚。行政拘留和刑事拘留是两个不同处罚。()
从所给四个选项中,选择最合适的一个填入问号处。使之呈现一定的规律性:
最新回复
(
0
)