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
职称考试
请阅读Passage 1,完成题: Modern scientists divide the process of dying into two sta...
请阅读Passage 1,完成题: Modern scientists divide the process of dying into two sta...
admin
2020-12-24
30
问题
请阅读Passage 1,完成题:
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__________.
查看材料
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://ti.zuoweng.com/ti/IBT8KKKQ
相关试题推荐
Passage2 Americanstodaydon′tplaceaveryhighvalueonintellect.Ourhe...
Passage2 Americanstodaydon′tplaceaveryhighvalueonintellect.Ourhe...
Passage2 Americanstodaydon′tplaceaveryhighvalueonintellect.Ourhe...
Passage2 Americansdon’tliketolosewars.Ofcourse,alotdependsonhowy...
Passage2 Ofallthecomponentsofagoodnight′ssleep,dreamsseemtobe...
Passage2 Ofallthecomponentsofagoodnight′ssleep,dreamsseemtobe...
Passage2 ForcenturiesinSpainandLatinAmerica,headinghomeforluncha...
Passage2 ForcenturiesinSpainandLatinAmerica,headinghomeforluncha...
Passage2 ForcenturiesinSpainandLatinAmerica,headinghomeforluncha...
Passage2 ForcenturiesinSpainandLatinAmerica,headinghomeforluncha...
随机试题
(81-82题共用题干) 男性,64岁,接受肾移植手术后2周出现尿量减少,体重
犬肾上腺皮质机能亢进在临诊上发生频率较高的症状是 A.肌肉无力萎缩 B.皮肤
在其他条件相同的情况下,下列指标中,越小越好的是()。
财政收支对货币供应量的最终影响,取决于()。
初孕妇,妊娠36周,无痛性阴道少量出血,无贫血外观,血压120/80mmHg,臀
A
多纵剖成两半,外表面紫红色或红棕色,有不规则的深皱纹;质坚硬,气微清香,味酸的中药是()A.豆蔻B.木瓜C.小茴香D.蛇床子E.槟榔
某实施监理的工程,合同工期15个月,总监理工程师批准的施工进度计划如图5-1所示。 工程实施过程中发生下列事件: 事件1:项目监理机构对A工作进行...
房地产估价应遵循合法原则,因此只有依法登记的房地产才能成为估价对象。()
下列属于劳动者权利的是().A:平等就业和选择就业B:完成用人单位规定的工作任务C:提高职业技能D:获得劳动安全卫生的保护E:休息休假