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
考研
【F1】The concept of life expectancy at birth is well understood by most people: the average age in which babies bom today will di
【F1】The concept of life expectancy at birth is well understood by most people: the average age in which babies bom today will di
admin
2019-08-08
31
问题
【F1】
The concept of life expectancy at birth is well understood by most people: the average age in which babies bom today will die if death rates throughout their life course resemble those today.
We have known for decades that in the U.S., on average, women live longer than men; whites live longer than blacks; and the rich and well educated live longer than those with low socioeconomic status.
【F2】
What we are only recently beginning to understand, however, is that educational attainment is becoming the single most important social determinant of longevity in America.
The new research shows that college-educated white women are expected to live 9.3 years longer than their low-educated counterparts—those who have not completed high school—compared with only a 2.5-year difference in 1990.
Variation is perhaps the second most important measure in statistics—the first being the average— summarizing the extent to which observations are spread around the average. 【F3】
For example, we can observe two populations with identical life expectancy, but, from an individual perspective, the one with larger variation in life spans will have greater uncertainty in the age of death.
If life span variation is very small, most deaths are concentrated close to the average; if variation is large, some individuals will die prematurely, whereas others will survive to a very old age.
To put it concretely, if you had to bet on how long you will live, your best bet would depend more than anything else on your educational attainment. 【F4】
Although betting on how long we will live may seem like an odd endeavor, this is precisely what we do, whether implicitly or explicitly, when we make decisions throughout the course of our life.
Variation in life spans also affects the social and economic institutions planning for our old age, including the Social Security Administration and programs like Medicare. They too have to balance between contributions and benefits in an era of growing uncertainty about how long we will live. Perhaps more fundamental, the growing inequality in life spans—both in average and in variability—raises questions concerning distributive justice. 【F5】
For example, if those at the lower rungs of the socioeconomic ladder are less likely to survive to old age—and, importantly, face greater uncertainty about their chances of survival—should we institute a differential retirement age?
And what would such a scheme look like?
【F5】
选项
答案
例如,如果那些社会经济地位较低的人不太可能长寿,并且重要的是,当他们面临更大的生存抉择的不确定性时,我们是不是应该制定一个有差别的退休年龄规定?
解析
①本句为主从复合句。主句为主谓宾结构的疑问句;条件状语从句由and连接两个分句,均为主谓宾结构。②从句中,介词短语at the lower...ladder为后置定语,修饰主语those,说明这些是社会经济地位较低的人;are less like to意为“不太可能……”;破折号后and连接的句子与前一分句并列,主语为those;介词短语about their...survival为后置定语,修饰uncertainty,说明是有关生存抉择的不确定性。
转载请注明原文地址:https://kaotiyun.com/show/BF2Z777K
0
考研英语一
相关试题推荐
Organisedvolunteeringandworkexperiencehaslongbeenavitalcompaniontouniversitydegreecourses.Usuallyitisleftto【C
Thecountry’sinadequatementalhealthsystemgetsthemostattentionafterinstancesofmassviolencethatthenationhasseen
Scientistshavelongarguedovertherelativecontributionsofpracticeandnativetalenttothedevelopmentofeliteperformanc
Weoftentendtoassociatesmilingastheresultofapositiveeventormood.Butresearchdemonstratesthattheactofsmiling,
Robotshavebeenthestuffofsciencefictionforsolongthatitissurprisinglyhardtoseethemasthestuffofmanagementfa
Asawisemanoncesaid,weareallultimatelyalone.ButanincreasingnumberofEuropeansarechoosingtobesoataneverear
Companieshaveembarkedonwhatlookslikethebeginningsofare-runofthemergersandacquisitions(M&A)wavethatdefinedth
Humaningenuitywasinitiallydemonstratedin______.Accordingtothetext,whatisbeyondman’sabilitynowistodesignaro
Despitethescandalsoverleakede-mails,thescientificevidenceforglobalwarmingremainsstrong.Thequestion,then,istow
随机试题
CR的图像处理功能,不包括
败血症是指病原体侵人血液后()。
注浆施工中采用高压喷射注浆法的土类为()。
某生产型企业为增值税一般纳税人。2013年10月发生以下业务:(1)销售一批货物给某商场,取得不含税销售收入100万元,同时取得货物包装物押金10万元(单独记账)、优质费7.02万元;(2)本月企业初次购进增值税税控系统专用设备一套。取得增值税专用发票
下列交易事项中,会影响企业当期营业利润的有()。
根据税法规定,下列说法不正确的是()。
任何水溶液中都存在氢离子和氢氧根离子,它们是一对冤家,一个多了另一个就少。溶液的酸碱性由其中的氢离子决定,氢离子越多,酸性越强,pH值越低。在溶液中加入酸,氢离子浓度就增加,pH值就降低;加入碱,氢氧根离子跟氢离子结合变成了水,氢离子减少,pH值就升高。
The Rational Unified Process(RUP)is a software engineering process, which captures many of best practices in modem softwaredevel
In______,thewholetangledsagaisaclassiccaseofseriousallegationsfallingthroughthecracksbetweenfederal,stateand
Doeswalkingonthemoonmakelifebetterforpeopleonearth?Whyshouldwebespendinghugesumsontripstoouterspace?Such
最新回复
(
0
)