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
2024-02-29
43
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/3491714.html
相关试题推荐
ExaminationshavealongerhistoryinChinathaninanyothercountry,yetitis
[originaltext]M:Hi,Sarah.What’sup?W:Oh,hi.Ijustgotoutofahistoryc
[originaltext]M:Hi,Sarah.What’sup?W:Oh,hi.Ijustgotoutofahistoryc
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
Thetermbiologicalclockisappliedtothemeans,whichlivingthings【
Thetermbiologicalclockisappliedtothemeans,whichlivingthings【
随机试题
What’stheprobablerelationshipbetweenthesetwospeakers?[br][originaltext
WhichmovieisanAmericanfantasyadventurefilmreleasedin2012,nominatedfo
PartⅡReadingComprehension(SkimmingandScanning)Directions:Inthispart,y
AmericanJazzMusicianLouisArmstrongArmstrongwasborn
患者女性,妊娠合并糖尿病,39周妊娠临产。产程观察中处理不正确的是A.血糖控制在
2020年1—4月份,规模以上煤炭开采和洗选业营业成本比石油和天然气开采业约
融资租赁合同中,出租人的义务包括()。A.及时支付货款 B.收取货款 C
外部培训开发机构包括()。A:全日制大中专院校 B:成人高等院校 C:地方政
(2013年真题)根据《建筑工程施工质量验收统一标准》(GB50300),建筑工
对库存现金清查时,下列表述不正确的是()。A、不能用不具法律效力的借条、收据
最新回复
(
0
)