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
公务员
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
2013-04-25
72
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(成熟期), the cells of the body and the 【C4】______they form do not function as well as they【C5】______in childhood and teenage years. The body provides less【C6】______against disease and is more【C7】______to have 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 workable 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(有弹性的). This is why the skin of old people wrinkles(皱纹) and【C17】______. This is also the reason why 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.
【C1】
选项
A、would
B、be used to
C、used to
D、used
答案
C
解析
根据句意,但是人们现在比过去寿命高。used to表示“过去经常做……”,暗示现在并不如此,此处指过去的情况,正好与句意相符。would可表示“过去经常”,但不含“今昔对比”之意。注意该词组与be used to的区别,后者意为“习惯于……”,to为介词。D项之所以不对,是因为在以下词组中,当不定式省略时,通常要保留不定式符号to,如used to,be going to,mean to,ought to,try to,plan to等。
转载请注明原文地址:https://kaotiyun.com/show/Q7hq777K
本试题收录于:
小学英语题库教师公开招聘分类
0
小学英语
教师公开招聘
相关试题推荐
阅读下面的材料,根据要求写作。美国著名作家和教育家爱默生曾精辟地指出:“教育成功的秘密在于尊重学生。”谁掌握了这把钥匙,谁将获得教育上巨大的成功。要求:用规范的现代汉语写作,不要脱离材料内容或含义,立意自定,题目自拟,观点明确,分析具体,条理清
阅读下文,按要求完成问题。南州六月荔枝丹贾祖璋⑴幼年时只知道荔枝干的壳和肉都是棕褐色的。上了小学。老师讲授白居易的《荔枝图序》,读到“壳如红缯,膜如紫绡,瓤肉莹白如冰雪,浆液甘酸如醴酪”,实在无法理解,荔枝哪里会是红色的!荔枝
①一幅地图,一张照片,一个动作,如果要通过电报或电话让对方了解,那是太不容易了。即便你有很强的表达能力,也很难说得清、道得周全。如果有这样一种通信方式,它能把写在纸上的字,以及活动的或静止的画面、景物从千里之外传送到你的面前,那你不就成了“千里眼”了吗?图
Wangling,amiddleschoolgirl,feltangrywithherparentsaftergettingaboy’sphonecall."Aclassmatecalledmetodiscuss
Oneofthemostremarkablethingsaboutthehumanmindisourabilitytoimaginethefuture.Inour【B1】wecanseewhathasnoty
Koreanculture(韩国文化)isreallyexcitingrightnow.TheKoreanWaveissweepingAsiancountriesincludingChina.Youngpeoplear
Pleaselookupthenewwordsinad_____.
Allmorningasshewaitedforthemedicalreportfromthedoctor,hernervousness
Thefirstrobotswereinventedinthe1920s.RobotshaveappearedinmanyAmericanfilms.Insomefilms,theyarestronger,fast
Mr.Kingdidn’tknow______yesterdayevening.
随机试题
石方开挖中,常用的爆破方法有()等。
阻碍军事行动罪侵犯的对象是()
颏舌肌
圆锥动力触探的“超前”和“滞后”效应,常发生在下列()种界面上。
下列描述中,适于描述开放式基金的有______个,适于描述封闭式基金的有______个。()①基金的资金规模具有可变性②在证券交易所按市价买卖③现金分红、再投资分红④受益凭证可赎回⑤单位资产净值每周至少
关于冻结单位存款的利息计算,以下说法正确的是()。
在某温度下,反应4HCl(g)+O2(g)==2H2O(g)+2Cl2(g)的Kc=1.60,若在一密闭容器里,加入的各物质的浓度分别为1.00mol·L-1HCl、0.40mol·L-1O2、1.00mol·L-1H2O、1.00mol·L-1C
请仔细阅读下列材料,并根据作答要求作文。春运期间我和好友幸运地订到了回家的火车票,上车后却发现一位老人坐在我们的位子上,好友示意我先坐老人旁边的位子,却没有请老人让出座位,我坐下后发现老人右脚有一点不方便,才了解好友不请他让出座位的原因。
纳米是()
当代中国农民处在从传统农耕文明向现代城市文明过渡的复杂环境中,正经历比以往任何时期都更为深刻的心灵_____。农村剧要寻求突破,就应主动探寻变革时代农民的复杂性,努力_____出具有心灵多样性的新农民形象。填入画横线部分最恰当的一项是:
最新回复
(
0
)