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
Life Span About a century ago, the average life span for Americans was about 50 years. /Today, the typical American lives fo
Life Span About a century ago, the average life span for Americans was about 50 years. /Today, the typical American lives fo
admin
2018-04-04
53
问题
选项
答案
Life Span About a century ago, the average life span for Americans was about 50 years. /Today, the typical American lives for around seventy-eight years. /What accounts for such increased longevity? /Between 1900 and 1950, inventions such as refrigeration and sewage treatment meant that/young people were able to survive longer. /Moreover, medical breakthroughs helped contain diseases/such as some fatal ones that killed many children. /These advances helped increase the average life span. /This means that future medical breakthroughs will result in even longer average life span.
解析
转载请注明原文地址:https://kaotiyun.com/show/RTxK777K
0
专业英语四级
相关试题推荐
Thousandsofpeopleturnedoutintothestreetsto______againstthelocalauthorities’decisiontobuildahighwayacrossthef
Hisplaniscarefullypreparedandfullofdetails,soitisavery______one.
Thegovernment______thatallwhowantedtoliveandworkinthiscountrymustholdthepassport.
WillE-booksReplaceTraditionalBooks?WiththedevelopmentofITtechnology,e-booksgetmoreandmorepopular.Somepeopl
A、Driedfish.B、Russiandelicacies.C、Noodles.D、Meat.D本题考查细节。由句(4)可知,男士称火车途中会停站几次,每个站台上都可以买到当地人售卖的食物,包括鱼干和其他种类的俄罗斯小吃,还有可以用开水加热
A、Mentaldiseases.B、Sleepproblems.C、Highbloodpressure.D、Heartproblems.A本题考查细节。由句(2—1)和(2—2)可知,不活动的人可能会有睡眠问题或者容易得感冒,并且缺乏锻
AmericanChildrenRaisingToAmericans,thegoalofparentsistohelpchildrenstandontheirowntwofeet./Frominfancy,
LifeSpanAboutacenturyago,theaveragelifespanforAmericanswasabout50years./Today,thetypicalAmericanlivesfo
A、Ituseslotsofgasbuthasalotoffun.B、Itistooexpensivetobuy.C、Itistypicalforroadtrips.D、Itisbigenoughto
A、Hehastocontributemuchmoremoneythanbefore.B、Hehastochipinformorecolleaguesthanbefore.C、Hedoesn’tknowthep
随机试题
塞补方法使用的塞头材料和铸件材料应()。
主要来自于建筑材料的室内污染物是
李某,女,30岁,咯血反复发作1个月,血色鲜红,呛咳气急,痰少质黏色黄,午后潮热,盗汗,两颧潮红,消瘦,舌红绛少津,苔薄黄,脉细数。诊断为()。
某土石坝坝高70m,坝基为砂砾石,其厚度为8.0m,该坝对渗漏量损失要求较高,根据《碾压式土石坝设计规范》DL/T5395—2007,以下哪种渗流控制形式最合适?
某县地税稽查局接到群众举报称某酒店有偷税行为,稽查局立案后于20×5年5月20日派两名稽查员对该酒店实施了检查,稽查员在出示税务检查证和税务检查通知书后,对该酒店的账簿及记账凭证进行了核查;同时经市地税局局长批准,对案件涉嫌人员的储蓄存款进行了查询。查实该
违反《旅行社条例》的规定,旅行社未经旅游者同意在旅游合同约定之外提供其他有偿服务的,由旅游行政管理部门责令改正,处2万元以上5万元以下的罚款。()
目前,很多汽车的驾驶室里装有一个叫GPS接收器的装置。GPS接收器通过接收卫星发射的信号,实现对车辆的精确定位并导航。卫星向GPS接收器传送信息依靠的是:
以下关于路由器的路由表说法正确的是()。Ⅰ路由表包含目的网络和到达该目的网络的完整路径Ⅱ路由表必须包含子网掩码Ⅲ目的网络和到达该目的网络路径上的下一个路由器的IP地址Ⅳ目的网络和到达该目的网络路径上的下一个路
Marie:Yourlittleboyhasdoneagoodjobatschool.Eva:_____
Grandfatherhadsustainedabrokenbackwhileworkinginthemines.______,hespenttherestofhislifeinawheelchair.
最新回复
(
0
)