首页
登录
职称英语
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
游客
2024-02-19
16
管理
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. [br] 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
可定位在第2段第1句,文中指出:科学家一直在寻找一种方式来延长临床死亡的时间(a way to prolong the period of clinical death),从而在生物死亡前使有机体复活(so that theorganism can be revived before biological death occurs),继而用例子来证明这个观点,即科学家们用猴子Keta来做实验,并描述其过程及结论,选项C意为“延长临床死亡时间”,为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3465245.html
相关试题推荐
Themodernworldcouldnotoperatewithoutroads.Itisawayoflifewith
Themodernworldcouldnotoperatewithoutroads.Itisawayoflifewith
Themodernworldcouldnotoperatewithoutroads.Itisawayoflifewith
Themodernworldcouldnotoperatewithoutroads.Itisawayoflifewith
Themodernworldcouldnotoperatewithoutroads.Itisawayoflifewith
WhilescientistsaresearchingthecauseoftheColumbiadisaster,NASAism
WhilescientistsaresearchingthecauseoftheColumbiadisaster,NASAism
WhilescientistsaresearchingthecauseoftheColumbiadisaster,NASAism
WhilescientistsaresearchingthecauseoftheColumbiadisaster,NASAism
[originaltext]ArecentsurveyreleasedbytheModernLanguageAssociationo
随机试题
Computersareelectronicmachinesforprocessingdata.Dataarepiecesorit
SDH传输体制可将PDH三种数字系列及ATM信元映射到VC-4中。
热的传递方式有A.传导、辐射、对流 B.反射、折射、散射 C.辐射、散射、对
下列哪项描述符合小儿良性癫痫伴中央颞区棘波A.多在生后2~3岁起病 B.癫痫发
治疗虹膜睫状体炎的首要措施是A.全身用抗生素 B.散瞳 C.皮质类固醇 D
患者男,48岁。胸痛2小时,查体:血压100/60mmHg,双肺湿罗音,心电图示
(2020年真题)下列对商业银行久期缺口的描述,恰当的是()。A.通常情况下,
女童,5岁,右下第二乳磨牙咬合面深龋洞,腐质去净后洞底在牙本质浅层,治疗方法是A
自动喷水灭火系统的闭式喷头在安装前应进行( ).A.喷洒性能试验 B.强度性
竣工结算一般由( )编制。A.施工单位 B.监理单位 C.设计单位 D.
最新回复
(
0
)