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, hut people now live longer than they used to.
Throughout history man has had to accept the fact that all living things must die, hut people now live longer than they used to.
admin
2010-07-24
70
问题
Throughout history man has had to accept the fact that all living things must die, hut people now live longer than they used to. Yet, all【C1】______things still show the effect of aging, which will eventually【C2】______death. The body and the【C3】______, they do not function as well as they【C4】______in childhood and adolescence(青春期). The body provides less【C5】______against disease and is more prone(易于……的)【C6】______accident.
A number of related causes may【C7】______to aging. Some cells of the body have a【C8】______long life, but they are not【C9】______when they die. As a person ages,【C10】______of brain cells and muscle cells decreases. Other body cells did and are replaced by new cells. In an aging person the【C11】______cells may not be as viable(能生存的)or as capable【C12】______growth as those of a young person.
Another factor in aging may be changes within the cells【C13】______Some of the protein chemicals in cells【C14】______known to change【C15】______age and become less elastic. This is why the skin of old people wrinkles and hangs loose. This is also the reason old people shrink in【C19】______. There may be other more important chemical changes in the cells. Some complex cell chemicals.【C17】______DNA and RNA, store and【C18】______information that the cells need. Aging may【C19】______this process and change the information carrying molecules【C20】______they do not transmit the information as well.
【C4】
选项
A、made
B、did
C、grew
D、had
答案
B
解析
此处本应用动词 function,但为了免得重复,用do替代,既然是in childhood and adolescence,所以用do的过去式did。
转载请注明原文地址:https://kaotiyun.com/show/meN7777K
0
大学英语四级
相关试题推荐
Americansocietyisnotnap-friendly.Infact,there’sevena【B1】______againstadmittingweneedsleep.Nobodywantstobecaugh
A、Herprofessordidnotlikeherstory:B、Shehadtroublefinishingherassignment.C、Shedidnotlikethetopicshehadchosen
A、Writingastory.B、Buyingabirthdaypresent.C、Ajewelrystorerobbery.D、Doingresearchforaclassassignment.A
A、Satisfied.B、Interested.C、Tired.D、Discouraged.D
Scarcely____________(她看见报纸上的广告)whenshebookedapackagetourwithBrightTravelService.
RecyclingOneofthemostimportantchangesinhowmodernsocietiesrespondtotheproblemsofwasteanditsdisposalisthe
OneofthemostexcitingchangesineducationintheUnitedStatestodayisthe【S1】______growthofdistanceeducationatthepos
ChildAbuseDefinitionofChildAbuseChildabuseisalsocalledcrueltytochildren,whichisthepurposefulinfliction
ChildAbuseDefinitionofChildAbuseChildabuseisalsocalledcrueltytochildren,whichisthepurposefulinfliction
Menseemtohavealwaystakeaninterestinmeteorites(陨星),but【C1】______theearlynineteenthcentury【C2】______theseobjectsco
随机试题
Thestorylinesofsilentdramasmayoftenhavebeen________,yetwithinthosebasicnarrativeoutlines,thetrueartistsamong
阅读《冯谖客孟尝君》中的一段文字,然后回答下列小题。长驱到齐,晨而求见。孟尝君怪其疾也,衣冠而见之,曰:“责毕收乎?来何疾也?”曰:“收毕矣。”“以何市而反?”冯谖曰:“君云‘视吾家所寡有者’。臣窃计,君宫中积珍宝,狗马实外厩,美人充下陈,君家所寡有者,
外科疾病按病因分类大致可分为
目前常用于免疫标记电镜技术的标记物主要有铁蛋白、荧光素和胶体金。()
对某4跨混凝土简支T梁桥进行技术状况评定,请依据JTG/TH21—2011回答以下问题:假定该桥上部承重构件、上部一般构件、支座的技术状况评分分别为55.00、75.00、65.00,权重值分别为0.70、0.18、0.12.则该桥上部结构技术状况评
新经济时代中价值创造的基础是( )。
社会保障基金来源于()。
不同的事物在开水中会出现不同的现象,胡萝卜会变软、鸡蛋会变硬、茶叶会使开水变成香气四溢的茶水。对此,请谈谈你的理解。
12,6,18,12,30,(),34。
自译
最新回复
(
0
)