首页
登录
职称英语
Throughout history man has had to accept the fact that all living things mus
Throughout history man has had to accept the fact that all living things mus
游客
2023-07-28
62
管理
问题
Throughout history man has had to accept the fact that all living things must die, but people now live longer than they 【C1】______. Yet, all living things still show the【C2】______of aging, which will eventually【C3】______death.
Aging is not a disease, but as a person passes maturity, the cells of the body and the【C4】______they form do not function as well as they【C5】______in childhood and adolescence (青春期), The body provides less【C6】______against disease and is more inclined【C7】______accident.
A number of related causes may【C8】______aging. Some cells of the body have a fairly long life, but they are not【C9】______when they die. As a person ages,【C10】______of brain cells and muscle cells decreases.【C11】______body cells die and are replaced by new cells. In an aging person the【C12】______cells may not be as viable (能生存的)or as capable【C13】______growth as those of a young person.
Another【C14】______in aging may be changes within the cells【C15】______. Some of the protein chemicals in cells are known【C16】______with age and become less elastic. This is why the skin of the old people wrinkles and【C17】______. This is also the reason old people【C18】______in height. There may be other more important chemical changes in the cells. Some complex cell chemicals, such as DNA and RNA, store and【C19】______information that the cells need. Aging may affect this【C20】______and change the information-carrying molecules so that they do not transmit the information as well. [br] 【C15】
选项
A、for themselves
B、by themselves
C、themselves
D、on their own
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2875454.html
相关试题推荐
Peoplecanbeaddictedtodifferentthings—e.g.,alcohol,drugs,certainfo
Peoplecanbeaddictedtodifferentthings—e.g.,alcohol,drugs,certainfo
Peoplecanbeaddictedtodifferentthings—e.g.,alcohol,drugs,certainfo
Peoplecanbeaddictedtodifferentthings—e.g.,alcohol,drugs,certainfo
Thefactthatblindpeoplecan"see"thingsusingotherpartsoftheirbodie
Thefactthatblindpeoplecan"see"thingsusingotherpartsoftheirbodie
[originaltext]A:Hello,Michael.Howarethingsgoing?B:Verywell,thanks.Ca
[originaltext]A:Hello,Michael.Howarethingsgoing?B:Verywell,thanks.Ca
[originaltext]A:Hello,Michael.Howarethingsgoing?B:Verywell,thanks.Ca
Thehistoryofmodernwaterpollutiongoes【C1】______toFebruary20,1931,
随机试题
BackinthecarefreedaysoftheNoughtiesboom,Britain’syoungstersweres
TheWorldHealthOrganizationiscallingforurgentinternationalactionto
某工程分为3个子项目,总合同价5000万美元,其中子项目l合同价为2200万美元
Photoshop中,下列关于背景层的描述正确的是()。A.背景层可以设臵图层蒙
左边给定的是纸盒外表面的展开图,右边哪一项能由它折叠而成?请把它找出来。 A.
大跨度建筑的空间结构体系中,()是一种类似于筒壳的薄壁空间体系。A.悬索结
下列关于社会策划模式的表述,错误的是( )。A.社会策划模式强调运用理性原则处理
说明企业人力资源战略规划的概念。
某企业采用单对象流水线的生产组织方式进行产品装配,流水线采用两班制的生产方式,产
标本涂片镜检时,见圆形或卵圆形菌体,革兰染色阳性,从菌体上有芽管伸出,但不与菌体
最新回复
(
0
)