首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
金融经济
Modern scientists divide the process of dying into two stages--clinical or te...
Modern scientists divide the process of dying into two stages--clinical or te...
admin
2020-12-24
35
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.
The best statement of the main idea of this passage is that _____
选项
A.scientists have found a way to prolong the period of clinical death
B.biological death occurs when vital organs have suffered perumnent damage
C.modern scientists divide the process of dying into clinical and biological death
D.cooling delays the processes leading to biological death
答案
A
解析
A项“科学家已找到延长临床死亡的办法”最能够体现全文主旨。
转载请注明原文地址:https://ti.zuoweng.com/ti/byR8KKKQ
相关试题推荐
Anewbookletexplainingtheprocessofcourseselectionalongwithcounselin...
ItisreportedthatsomescientistsintheUnitedStateshavefoundanew___...
Whenthecopyingprocessis__________,asmall"Done"windowappearsonth...A.
Modernscientistsdividetheprocessofdyingintotwostages--clinicalorte...
Modernscientistsdividetheprocessofdyingintotwostages--clinicalorte...
WhatisNOTmentionedasapartofthechocolateproductionprocessinValbonne?
RobertThompsoninvestsinastock________willpaydividendsof$3.00atth...
[完型填空] Manypeoplewouldagreethatstressisamajorprobleminmodern...
[完型填空] Manypeoplewouldagreethatstressisamajorprobleminmodern...
Modernlifeisimpossiblewithouttraveling.Thefastestwayoftravelingis...
随机试题
颞肌的止点是
下列诗句所描写的景致,属于同一个城市的是()。
(2014年)下列有关安全文明费的说法中,正确的有()
2:3:1含钠液下列哪项是错误的
旅游保险的主要险种不包括()。 A.旅行社责任保险 B.旅游意外保险
《国民旅游休闲纲要》提出到2020年要基本建成与()相适应的现代国民旅游休闲体系。A.社会发展B.经济发展C.小康社会D.和谐社会
“己欲立而立仁,己欲达而达人”告诉教师,对待同事和学生要做到() A.相互尊重与体谅B.相互竞争与合作 C.相互交流与沟通D.相互团结与友爱
依据《中华人民共和国预防未成年人犯罪法》,下列属于“不良行为”的是( )。A.小强将管制刀具带在书包里以保护自己B.小明经常强迫低年级同学买东西给他吃C.
下列四句话中,“大概”一词的用法和其他三句不同的是()。 a.他把情况做了个大概的分析 b.这件事我记不太清楚,只是有个大概的印象 c.大概到了半...
在企业开发新产品的各种组织形式中,创业小组主要负责()。A:新产品开发的总体设想B:确定计划项目C:实施具体的开发过程D:反馈与改进