首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Throughout history man has had to accept the fact that all living things must die, but people now live longer than they 【C1】____
Throughout history man has had to accept the fact that all living things must die, but people now live longer than they 【C1】____
admin
2010-04-12
61
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.
【C9】
选项
A、replaced
B、reborn
C、recovered
D、yielded
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/x8j7777K
0
大学英语四级
相关试题推荐
Asaclientrelationshipmanager,onehastoalwaysconsidertheneedsofthecustomers______(而不是自己的方便).
Researchershaveestablishedthatwhenpeoplearementallyengaged,biochemicalchangesoccurinthebrainthatallowittoact
Themodemsocietyhaswitnessedamazingdevelopmentinastrology.Inrecentyearsscientificinvestigationofcometshas【B1】___
A、Workinghardtowardone’sgoal.B、Lowself-esteem.C、Behavioralproblems.D、Eatingdisorder.A文中提到电影中的人物形象非常完美,成为青少年的梦想,但是这些却又
Singaporeiswellknownasamulti-racial,multi-culturalandmulti-religiousnation.Andthis【C1】______isgraduallybecoming
A、Hispants.B、Hiswallet.C、Hisboat.D、Hisfishingpole.D
Ifthereisanysinglefactorthatmakesforsuccessinliving,itistheabilitytoprofitbydefeat.EverysuccessIknowhas
Ifthereisanysinglefactorthatmakesforsuccessinliving,itistheabilitytoprofitbydefeat.EverysuccessIknowhas
Wemayallliketoconsiderourselvesfreespirits.Butastudyofthetracesleftby50,000cellphoneusersoverthreemonthsh
随机试题
行政行为撤销的条件有()。
患儿,5岁,持续发热4天,神志昏迷,颈项强直,四肢抽搐,喉间痰鸣,呼吸不利,口渴引饮,大便秘结,舌红绛苔黄,脉洪数。诊为流行性乙型脑炎,治疗首选方剂为()
环境影响预测中用到的环境质量参数可分为()两类。
根据国有资产管理法律制度的规定,国有企业实施改制时应当明确企业与职工的相关责任。下列有关国有企业改制时企业与职工关系问题的表述中,正确的有()。(2009年)
成语“心知肚明”的发明人可能从未思考过它的生物学含义。在食物安全性和有效性的判断上,心知肚明是_______的,当人吃了有害食物的时候,消化道微生物和肠道神经元会立即启动_______机制而使人上吐下泻,尽快尽多地将有害物质排出。填入画横线部分最恰当的一项
中国大陆及其沿海岛屿的领海以连接大陆岸上和沿海岸外缘岛屿上各基点之间的各直线为基线,从基线向外延伸()海里的水域是中国的领海。
西周时期的借贷契约称为()。(2009年单选34)
“人的依赖性关系”是()
新时代坚持和发展中国特色社会主义,根本动力仍然是()。
数据库系统的核心是
最新回复
(
0
)