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
52
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.
【C16】
选项
A、change
B、changing
C、to change
D、being changed
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/T8j7777K
0
大学英语四级
相关试题推荐
A、Dogsarenowtreatedaspartofafamily.B、Dogsstillperformallthedutiestheyusedtodo.C、Peoplenowkeepdogsforthe
WhenmenreturnedfromWorldWarIIandthepostwar"babyboom"began,Americansbegantomoveingreatnumberstothe【B1】______
ScientistsWeighOptionsforRebuildingNewOrleansAsexpertsponderhowbesttorebuildthedevastated(毁坏)city,onequesti
Researchershaveestablishedthatwhenpeoplearementallyengaged,biochemicalchangesoccurinthebrainthatallowittoact
A、Schooladministrativemeeting.B、Studentsrepresentativemeetings.C、Meetingsoftheboard.D、Throughaweeklymeetingconsist
A、Becauseherfriendaskedhertobuyone.B、Becauseshewantedtobuyone.C、Becauseshewantedtogiveitasagifttoherfri
Singaporeiswellknownasamulti-racial,multi-culturalandmulti-religiousnation.Andthis【C1】______isgraduallybecoming
RobertSpring,a19thcenturyforger(伪造者),wassogoodathisprofessionthathewasabletomakehislivingfor15yearsbyse
A、Skirtandsweater.B、Sweaterandbasketballshoes.C、Glovesanddress.D、Dressandfootballshoes.B
A、TheTimes.B、Newsweek.C、BeijingWeekly.D、ChinaDaily.B
随机试题
在下列叙述中,脂褐素的本质是
简述外汇的作用。
ProblemsCausedbyUsingComputersLonghoursatthescreencancause【C1】________(ache)eyes,【C2】________(blur)visionan
设x=f(exsiny,x2+y2),其中f(u,v)可微,求
Hisfellowworkerssawhimfalldownandbloodcameoutfromtheopen______.
腹直肌()
头针穴线之顶颞前斜线是
Gd-DTPA的不良反应可包括
关于企业所得税收入确认时间的说法,正确的有()。
当x→0+时,下列无穷小中,阶数最高的是().
最新回复
(
0
)