四级It is impossible that a single shot of education, administered in childhood and early adulthood, will be able to support a sustained, 60-year career.

在童年和成年早期实施的一次教育不可能支持一个持续60年的职业生涯。

2019年6月四级真题（第一套）阅读 Section B

四级It is impossible that a single shot of education, administered in childhood and early adulthood,will be able to support a sustained, 60-year career.

在童年和成年早期实施的一次教育不可能支持一个持续60年的职业生涯。

2019年6月四级真题（第一套）阅读 Section B

六级And to get at the contents of a single iPhone, the government says it needs a court order and Apple's help to write new code; in earlier versions of the iPhone, ones that were created before Apple found religion on 热衷于 privacy, the Fbi might have been abl

政府表示，要获取一部iPhone的内容，需要法庭命令和苹果的帮助来编写新代码；在iPhone的早期版本中，这些版本是在苹果出现宗教信仰之前创建的热衷于 隐私，Fbi可能是abl

2017年12月六级真题（第三套）阅读 Section B

考研Until now, many sellers that have a physical presence in only a single state or a few states have been able to avoid charging sales taxes when they ship to addresses outside those states.

到目前为止，许多只在一个州或几个州有实体存在的卖家在将货物运送到这些州以外的地址时能够避免收取销售税。

2020年考研真题（英语一）翻译 Section Ⅲ

考研There are also stories about newly adoptive – and newly single – mom Sandra Bullock, as well as the usual “Jennifer Aniston is pregnant” news.

也有关于新领养——和新单身——母亲桑德拉·布洛克的故事，以及通常的“詹妮弗·安妮斯顿怀孕”新闻。

2011年考研阅读原文

六级According to Mark Saul, the director of competitions for the Mathematical Association of America, not a single African-American or Hispanic student—and only a handful of girls—has ever made it to the Math Olympiad team in its 50 years of existence.

据美国数学协会竞赛主管马克·索尔（Mark Saul）说，在数学奥林匹克队成立50年的时间里，没有一个非裔美国人或西班牙裔学生，只有少数女孩进入过该队。

2017年6月阅读原文

考研According to several studies concluding that parents are less happy than childless couples, single parents are the least happy of all.

根据几项研究得出的结论，父母比没有孩子的夫妇更不幸福，单亲父母是最不幸福的。

2011年考研阅读原文

考研As well as those chronic problems, the EU face an acute crisis in its economic core, the 16 countries that use the single currency.

除了这些长期存在的问题外，欧盟的经济核心——使用单一货币的16个国家——也面临着严重的危机。

2011年考研真题（英语二）阅读理解 Section Ⅱ

四级When good students turn in an essay, they dream of their instructor returning it to them in exactly the same condition, save for a single word added in the margin of the final page: Flawless.

当优秀的学生交上一篇文章时，他们梦想着他们的老师能以完全相同的条件把它交给他们，只在最后一页的页边加上一个词：完美无瑕。

2015年12月阅读原文

六级So what factors, at the community level, do predict if poor children will move up the economic ladder as adults? What explains, for instance, why the Salt Lake City metro area is one of the 100 largest metropolitan areas most likely to lift the fortunes of the poor and the Atlanta metro area is one of the least likely?Harvard economist Raj Chetty has pointed to economic and racial segregation, community density, the size of a community's middle class, the quality of schools, community religiosity, and family structure, which he calls the single strongest correlate of upward mobility.

那么，在社区层面上，有哪些因素可以预测贫困儿童是否会在成年后的经济阶梯上上升呢？例如，是什么解释了为什么盐湖城大都会区是最有可能给穷人带来财富的100个最大大都会区之一，而亚特兰大大都会区是最不可能的地区之一？哈佛大学经济学家Raj Chetty指出了经济和种族隔离、社区密度、社区中产阶级的规模，学校的质量、社区的宗教信仰和家庭结构，他称之为向上流动的唯一最强关联。

2015年12月阅读原文

六级These are likely to have more resources andmore knowledge about all aspects of advertising and advertising media than single company.

与单个公司相比，这些公司在广告和广告媒体的各个方面可能拥有更多的资源和更多的知识。

2015年12月听力原文

六级And on reflection, this is not surprising; the single word environment has so many dimensions, and there are so many other factors affecting wealth—such as the oil deposits—that teasing out a simple economy-environment relationship would be almost impossible.

反省一下，这并不奇怪；单词环境有如此多的维度，还有如此多的其他因素影响着财富，比如石油储量，因此挑出一个简单的经济-环境关系几乎是不可能的。

2016年6月阅读原文

四级They suggest this indicates that dogs aren’t sensing emotions from a single feature, but piecing together information from all facial features just as humans do.

他们认为，这表明狗并不是从单一特征中感知情感，而是像人类一样将所有面部特征的信息拼凑在一起。

2017年6月听力原文

考研In physics, one approach takes this impulse for unification to its extreme, and seeks a theory of everything-a single generative equation for all we see.

在物理学中，有一种方法将这种统一的冲动发挥到极致，并寻求一种万物理论——一种我们所看到的一切的单一生成方程。

2012年考研翻译原文

考研All but two pieces sold, fetching more than £70m, a record for a sale by a single artist.

除两件作品外，其余作品全部售出，成交金额超过7000万英镑，创下了一位艺术家的销售记录。

2010年考研真题（英语二）阅读理解 Section Ⅱ

六级And on reflection, this is not surprising; the single word" environment" has so many dimensions, and there are so many other factors affecting wealth—such as the oil deposits—that teasing out a simple economy-environment relationship would be almost impos

反省一下，这并不奇怪；“环境”一词有如此多的维度，还有如此多的其他因素影响着财富，比如石油储量，因此挑出一个简单的经济-环境关系几乎是不可能的

2016年6月六级真题（第三套）阅读 Section B

四级Some 14% of young adults lived alone, were a single parent or lived with one or more roommates.

约14%的年轻人独居、单亲或与一个或多个室友住在一起。

2019年6月四级真题（第二套）阅读 Section B

考研Google and microsoft are among companies that already have these "single sign-on" systems that make it possible for users to log in just once but use many different services.

谷歌和微软等公司已经拥有这些“单点登录”系统，用户只需登录一次即可使用多种不同的服务。

2011年考研真题（英语二）完形填空 Section Ⅰ

四级They're also only a single layer in what should ideally be a many-sided approach to securing your home, one that includes common sense things like sound locks and proper exterior lighting at night.

他们也只是一个单层，理想情况下应该是一个多方面的方法来保护你的家，一个包括常识的东西，如声音锁和适当的夜间外部照明。

2016年12月阅读原文

考研There are also stories about newly adoptive – and newly single – mom Sandra Bullock, as well as the usual "Jennifer Aniston is pregnant" news.

也有关于新领养——和新单身——母亲桑德拉·布洛克的故事，以及通常的“詹妮弗·安妮斯顿怀孕”新闻。

2011年考研真题（英语一）阅读理解 Section Ⅱ

六级Although many of the churches appear from the outside to be complex structures, they normally feature only a single storey but numerous different roof levels.

虽然许多教堂从外观上看是复杂的结构，但它们通常只有一层，但有许多不同的屋顶层。

2019年12月六级真题（第一套）听力 Section C

高考When a predator always eats huge numbers of a single prey, the two species are strongly linked; when a predator lives on various species, they are weakly linked.

当一个捕食者总是吃掉大量的单一猎物时，这两个物种是紧密相连的；当捕食者生活在不同的物种上时，它们之间的联系很弱。

2019年高考英语天津卷 阅读理解 阅读C 原文

六级Amid the current concerns about the federal deficit, reaching toward the stars seems a dispensable luxury—as if saving one-thousandth of a single year's budget would solve our problems.

在当前对联邦赤字的担忧中，接近明星似乎是一种可有可无的奢侈，似乎节省一年预算的千分之一就能解决我们的问题。

2013年12月阅读原文

高考On every single move you have to analyze a situation, process what your opponent is doing and evaluate the best move from among all your options.

在每一步行动中，你都必须分析形势，处理对手正在做的事情，并从你所有的选择中评估出最好的一步。

2018年高考英语全国卷I 完形填空 原文

考研Other anthropologists believed that cultural innovations, such as inventions, had a single origin and passed from society to society.

其他人类学家认为，文化创新，如发明，有一个单一的起源，并从一个社会传递到另一个社会。

2009年考研阅读原文

高考It meant any inexpensive newspaper; perhaps more importantly it meant newspapers that could be bought in single copies on the street.

它意味着任何便宜的报纸；也许更重要的是，这意味着可以在街上买到单张报纸。

2019年高考英语全国卷3 阅读理解 阅读C 原文

六级Apple argues that it is fighting to preserve a principle that most of us who are addicted to our smartphones can defend: Weaken a single iPhone so that its contents can be viewed by the American government and you risk weakening all iPhones for any govern

苹果公司辩称，它正在努力维护一个原则，这一原则是我们大多数沉迷于智能手机的人都可以捍卫的：削弱一台iPhone，这样它的内容就可以被美国政府看到，你就有可能以任何方式削弱所有iPhone

2017年12月六级真题（第三套）阅读 Section B

考研At its best, the European project is remarkably liberal: built around a single market of 27 rich and poor countries, its internal borders are far more open to goods, capital and labour than any comparable trading area.

在最好的情况下，欧洲项目是非常自由的：建立在一个由27个富国和穷国组成的单一市场上，其内部边界对商品、资本和劳动力的开放程度远远高于任何可比贸易区。

2011年考研真题（英语二）阅读理解 Section Ⅱ

高考So if we send out a robot with the single instruction of fetching coffee, it will have a strong desire to secure success by disabling its own off switch or even killing anyone who might interfere with its task.

因此，如果我们发送一个机器人，只需一条取咖啡的指令，它就会有强烈的愿望，通过关闭自己的关闭开关，甚至杀死任何可能干扰其任务的人来确保成功。

2017年高考英语北京卷 阅读理解 阅读D 原文

六级For example, in 1909 anyone who wanted to make a single copy of a literary work for personal use had to do so by hand.

例如，在1909年，任何人想要制作一本供个人使用的文学作品，都必须手工制作。

2014年6月听力原文

六级Manufacturing companies on average rely on more than 35 contract suppliers around the world to create a single product.

制造企业平均依赖全球35家以上的合同供应商来生产单一产品。

2015年12月六级真题（第二套）听力 Section C

六级This is an important aspect of what it means to be freelance (从事自由职业的) performer, who isn't regularly employed every single day working on projects.

这是自由职业者意义的一个重要方面(从事自由职业的) 表演者，不是每天都被雇佣从事项目工作。

2019年6月六级真题（第二套）阅读 Section C

高考At first the price of single copies was seldom a penny-usually two or three cents was charged-and some of the older well-known papers charged five or six cents.

一开始，单张报纸的价格很少是一便士，通常是2到3美分，一些较老的著名报纸要5到6美分。

2019年高考英语全国卷3 阅读理解 阅读C 原文

考研Says Korn/Ferry senior partner Dennis Carey:”I can’t think of a single search I’ve done where a board has not instructed me to look at sitting CEOs first.

光辉国际高级合伙人丹尼斯·凯里（Dennis Carey）说：“我想不出我做过哪一次搜索，董事会没有指示我先看看现任CEO。

2011年考研阅读原文

考研Unhappy parents rarely are provoked to wonder if they shouldn’t have had kids, but unhappy childless folks are bothered with the message that children are the single most important thing in the world: obviously their misery must be a direct result of the gaping baby-size holes in their lives.

不幸的父母很少会被激怒去怀疑他们是否应该生孩子，但不幸的无子女的人们却被这样一个信息所困扰：孩子是世界上最重要的东西：显然，他们的痛苦一定是他们生活中婴儿大小的巨大洞的直接结果。

2011年考研阅读原文

六级And yet, not a single interviewer has ever asked me about my educational background.

然而，没有一个面试官问过我的教育背景。

2018年6月六级真题（第三套）阅读 Section B

六级"In America there are large ants which can eat whole trees bare as a broom handle in a single night,"she wrote in the description.

她在描述中写道：“在美国，有一些大型蚂蚁可以在一夜之间把整棵树光溜溜地吃掉。”。

2018年12月六级真题（第二套）阅读 Section B

六级Andrea, Rick and Zac stayed in the basement department, sharing laundry and single bathroom with Michael, his wife and their two children.

安德里亚、里克和扎克住在地下室，与迈克尔、他的妻子和两个孩子共用洗衣房和单人浴室。

2012年12月听力原文

考研Of course, the image of parenthood that celebrity magazines like Us Weekly and People present is hugely unrealistic, especially when the parents are single mothers like Bullock.

当然，像《美国周刊》和《人物》这样的名人杂志所呈现的为人父母的形象是非常不现实的，尤其是当父母是布洛克这样的单身母亲时。

2011年考研阅读原文

考研A typical work, such as Seven Days, consists of a single beautiful black-and-white photograph taken on an epic walk, with the mileage and number of days taken listed beneath.

一部典型的作品，如《七天》，由一张在史诗般的步行中拍摄的美丽黑白照片组成，下面列出了拍摄的里程数和天数。

2014年考研真题（英语二）阅读理解 Section Ⅱ

四级Not really, because the police don't have time to police every single driver.

不太可能，因为警察没有时间对每一个司机进行监控。

2016年6月四级真题（第二套）听力 Section B

四级This is mainly because women are more likely than men to be single parents living with their children.

这主要是因为女性比男性更有可能成为与子女生活在一起的单亲家长。

2019年6月四级真题（第二套）阅读 Section B

高考Sorry, we have no rooms like that now, but we have a room with a single bed.

对不起，我们现在没有那样的房间，但我们有一间单人房。

2016年高考英语北京卷 听力 原文

高考It had been possiblebut not easyto buy single copies of newspapers before 1830, but this usually meant the reader had to go down to the printer's office to purchase a copy.

1830年以前，买一份报纸是可能的，但并不容易，但这通常意味着读者必须到印刷厂的办公室去买一份。

2019年高考英语全国卷3 阅读理解 阅读C 原文

高考These are volcanoes so explosive that they burst open in a single big crack, leaving behind a vast hole, the caldera.

这些火山爆发力如此之大，以至于它们在一条大裂缝中爆裂，留下一个巨大的洞，即火山口。

2019年高考英语江苏卷 阅读理解 阅读B 原文

高考Experts say Paris is right: for a sudden heart failure, the single best chance for survival is having someone nearby step in and do CPR quickly.

专家们说，巴黎是对的：对于突发性心力衰竭来说，最好的生存机会是让附近的人介入并快速进行心肺复苏。

2017年高考英语北京卷 阅读理解 阅读A 原文

考研Newton’s laws of motion and Darwinian evolution each bind a host of different phenomena into a single explicatory frame work.

牛顿运动定律和达尔文进化论都将一系列不同的现象结合到一个单一的解释框架中。

2012年考研翻译原文

四级No single online activity is to blame for excessive use, he said.

他说，过度使用不能归咎于任何一种网络活动。

2010年6月阅读原文

考研Today's farm laborers, while still predominantly born in Mexico, are more likely to be settled rather than migrating and more likely to be married than single.

今天的农场工人，虽然仍然主要出生在墨西哥，但更有可能定居而不是移民，更有可能结婚而不是单身。

2019年考研真题（英语二）阅读理解 Section Ⅱ

高考My little experiment to find joy in a single object worked for both of us.

我在一个物体上寻找快乐的小实验对我们俩都有效。

2018年高考英语全国卷3 阅读理解 阅读D 原文

六级She was the first to bring together insects and their habitats, including food they ate, into a single ecological composition.

她是第一个将昆虫和它们的栖息地，包括它们所吃的食物，整合成一个单一的生态组合的人。

2018年12月六级真题（第二套）阅读 Section B

六级Amid the current concerns about the federal deficit, reaching toward the stars seems a dispensable luxury—as if saving one-thousandth of a single year's budget would solve our problems

在当前对联邦赤字的担忧中，接近明星似乎是一种可有可无的奢侈，似乎节省一年预算的千分之一就能解决我们的问题

2013年12月阅读原文

六级The video camera that one single mother bought for a special occasion, for example, is not much fun now.

例如，一位单身母亲为特殊场合买的摄像机，现在已经没有多大乐趣了。

2016年12月听力原文

考研One reason for the persistence of this pyramid of production is that for the past half-century, much of the world's media culture has been defined by a single medium - television - and television is defined by downloading.

这种金字塔式的生产方式持续存在的一个原因是，在过去的半个世纪里，世界上的许多媒体文化都是由单一媒体——电视——定义的，而电视则是通过下载来定义的。

2012年考研阅读原文

考研Surveys can cover a single large settlement or entire landscapes.

勘测可以覆盖单个大型定居点或整个景观。

2014年考研阅读原文

高考The workshops all take the same form, focusing on a single play as a kind of case study, and using individual scenes as specific lessons.

研讨会都采取相同的形式，以单个剧本作为案例研究，并以单个场景作为具体课程。

2015年高考英语上海卷 阅读理解 阅读C 原文

四级They needn't pay a single cent for their power consumption on sunny days

在晴朗的日子里，他们不必为用电支付一分钱

2013年6月阅读原文

六级And they were more likely to have a criminal record and to be raising a child as a single parent on a very low income.

而且他们更有可能有犯罪记录，并且以极低的收入作为单亲抚养孩子。

2016年6月六级真题（第一套）听力 Section C

考研However, even though it's common, it's important to keep in mind that in a single moment of fatigue, you can say something to your child that you may regret for a long time.

然而，尽管这很常见，但重要的是要记住，在疲劳的一瞬间，你可以对你的孩子说一些你可能会后悔很久的话。

2020年考研真题（英语二）完形填空 Section Ⅰ

六级Harvard economist Raj Chetty has pointed to economic and racial segregation, community density, the size of a community's middle class, the quality of schools, community religiosity, and family structure, which he calls the "single strongest correlate of

哈佛大学经济学家拉吉·切蒂（Raj Chetty）指出了经济和种族隔离、社区密度、社区中产阶级规模、学校质量、社区宗教信仰和家庭结构，他称之为“单一最强大的相互关联”

2015年12月六级真题（第三套）阅读 Section C

六级The most common CubeSat is a 10cm cube, so small that a single CubeSat could easily be mistaken for a paperweight on your desk.

最常见的立方体是一个10厘米的立方体，非常小，以至于一个立方体很容易被误认为你桌上的镇纸。

2019年6月六级真题（第三套）阅读 Section B

六级On Jan 9, 2007, Steve Jobs formally announced Apple's "revolutionary mobile phone"—a device that combined the functionality of an iPod, phone and Internet communication into a single unit, navigated by touch.

2007年1月9日，史蒂夫·乔布斯（Steve Jobs）正式宣布推出苹果公司的“革命性手机”——一款集iPod、手机和互联网通信功能于一体的设备，通过触摸导航。

2018年12月六级真题（第一套）阅读 Section C

六级In the modem industrialised agricultural process—which developing nations are moving towards in order to increase future yields—energy usage in the making and application of fertilisers and pesticides represents the single biggest component.

在发展中国家为提高未来产量而走向的现代工业化农业进程中，化肥和农药的制造和应用中的能源使用是最大的组成部分。

2013年12月阅读原文

六级The robots have provided major benefits to farmers in various ways, from hunting and pulling weeds monitoring the condition of every single fruit.

这些机器人以各种方式为农民带来了巨大的好处，比如打猎和拔草，监测每一种水果的状况。

2018年12月六级真题（第三套）阅读 Section C

考研Yet most ancestry testing only considers a single lineage, either the Y chromosome inherited through men in a father’s line or mitochondrial DNA, which a passed down only from mothers.

然而，大多数的祖先测试只考虑一个单一的谱系，要么是Y染色体通过父亲系中的男性遗传，要么是线粒体DNA，后者仅由母亲遗传。

2009年考研阅读原文

四级They needn't pay a single cent for their power consumption on sunny days.

在阳光明媚的日子里，他们不必为用电支付一分钱。

2013年6月阅读原文

高考There are over 50 students in the course, and every single one wants the book.

这门课有50多名学生，每个人都想要这本书。

2017年高考英语全国卷2 听力 原文

四级It takes many hours to craft a single sign.

制作一个标志需要很多小时。

2018年6月四级真题（第一套）阅读 Section A

考研One reason for the persistence of this pyramid of production is that for the past half-century, much of the world's media culture has been defined by a single medium - television - and television is defined by downloading.

这种金字塔式的生产方式持续存在的一个原因是，在过去的半个世纪里，世界上的许多媒体文化都是由单一媒体——电视——定义的，而电视则是通过下载来定义的。

2012年考研真题（英语一）阅读理解 Section Ⅱ

考研One reason for the persistence of this pyramid of production is that for the past half-century, much of the world's media culture has been defined by a single medium—television—and television is defined by downloading.

这种生产金字塔持续存在的一个原因是，在过去的半个世纪里，世界上的许多媒体文化都是由单一媒体电视定义的，而电视是通过下载定义的。

2012年考研真题（英语一）阅读理解 Section Ⅱ

考研Markets have lost faith that the euro zone's economies, weaker or stronger, will one day converge thanks to the discipline of sharing a single currency, which denies uncompetitive members the quick fix of devaluation.

市场已经失去信心，认为欧元区的经济体，无论是弱是强，总有一天会趋同，这要归功于共享单一货币的原则，这使得没有竞争力的成员国无法快速解决贬值问题。

2011年考研真题（英语二）阅读理解 Section Ⅱ

考研Yet the debate about how to save Europe's single currency from disintegration is stuck.

然而，关于如何拯救欧洲单一货币不致解体的争论仍然存在。

2011年考研真题（英语二）阅读理解 Section Ⅱ

高考From that day on, Cathy kept swimming and didn't miss a single practice.

从那天起，凯西一直在游泳，没有错过任何一次练习。

2016年高考英语天津卷 完形填空 原文

高考Not a single day has been wasted, though I can never tell when knowing the population of Nepal might prove useful.

没有一天被浪费，尽管我永远也不知道什么时候知道尼泊尔的人口会被证明是有用的。

2015年高考英语福建卷 阅读理解 阅读B 原文

四级millions of people travel by plane every single day.

每天有数百万人乘飞机旅行。

2019年12月四级真题（第三套）阅读 Section A

考研In choosing a new home, Camille McClain's kids have single demand: a backyard.

在选择新家时，卡米尔·麦克莱恩的孩子们只有一个要求：后院。

2019年考研真题（英语二）阅读理解 Section Ⅱ

考研Unhappy parents rarely are provoked to wonder if they shouldn't have had kids, but unhappy childless folks are bothered with the message that children are the single most important thing in the world: obviously their misery must be a direct result of the

不幸的父母很少会被激怒去怀疑他们是否不应该生孩子，但是不幸的无子女的人们却被这样一个信息所困扰：孩子是世界上最重要的东西：显然，他们的痛苦一定是孩子的直接结果

2011年考研真题（英语一）阅读理解 Section Ⅱ

高考Ok, single room or double room?

好的，单人房还是双人房？

2015年高考英语湖北卷 听力 原文

六级Turning every single word into the target language would put too much strain on the interpreter and slow down the whole process too much.

把每一个单词都译成目标语言会给口译员带来太多的压力，也会大大减慢整个过程。

2016年6月六级真题（第一套）听力 Section A

考研Yet most ancestry testing only considers a single lineage, either the Y chromosome inherited through men in a father's line or mitochondrial DNA, which is a passed down only from mothers.

然而，大多数祖先测试只考虑单一血统，要么是父亲系中通过男性遗传的Y染色体，要么是仅由母亲遗传的线粒体DNA。

2009年考研真题（英语一）阅读理解 Section Ⅱ

六级He said not a single word during the entire flight

在整个飞行过程中，他一句话也没说

2011年6月听力原文

四级Aaron, for example,was single, and earns a very good salary

例如，亚伦是单身，收入很高

2012年12月听力原文

四级There is no single easy quick solution to the problem.

这个问题没有一个简单快速的解决办法。

2016年12月阅读原文

四级As much as I enjoy my own company, I no longer imagine I can get through a single day much less all my life completely on my own.

虽然我很喜欢和自己在一起，但我再也无法想象自己能独自度过一天，更不用说一辈子了。

2011年12月听力原文

六级As much as I enjoy my own company, I no longer imagine I can get through a single day much less all my life completely on my own

虽然我很喜欢自己的陪伴，但我不再想象自己能独自度过一天，更不用说一辈子了

2011年12月听力原文

六级He said not a single word during the entire flight.

在整个飞行过程中，他一句话也没说。

2011年6月听力原文

四级No single online activity is to blame for excessive use, he said

他说，过度使用不应归咎于单一的在线活动

2010年6月阅读原文

六级By 2008, the figure had fallen into the single 33 digits.

到2008年，这一数字已降至33位。

2016年12月六级真题（第二套）阅读 Section A

六级Harvard economist Raj Chetty has pointed to economic and racial segregation, community density, the size of a community’s middle class, the quality of schools, community religiosity, and family structure, which he calls the “single strongest correlate of upward mobility.

哈佛大学经济学家Raj Chetty指出了经济和种族隔离、社区密度、社区中产阶级的规模、学校的质量、社区宗教信仰和家庭结构，他称之为“向上流动的最强关联”。

2015年12月大学英语六级考试真题（一）

六级And to get at the contents of a single iPhone, the government says it needs a court order and Apple’s help to write new code; in earlier versions of the iPhone, ones that were created before Apple found religion on ( 热 衷 于 ) privacy, the may have been able to break into the device by itself.

为了了解一部iPhone的内容，政府表示需要法院命令和苹果的帮助来编写新代码；在早期版本的iPhone中，在苹果在（热 衷 于 ) 隐私

2017年12月英语六级考试真题（卷三）

六级“This is an important aspect of what it means to be a freelance (从事自由职业的) performer, who isn’t regularly employed every single day working on projects.

“这是自由职业者的一个重要方面(从事自由职业的) 表演者，不是每天都有固定的工作在项目上。

2019.6六级真题第二套

六级Some administrators maintain that drop-outs remain the single greatest problem in their schools.

一些管理人员坚持认为，辍学仍然是他们学校最大的问题。

2008年6月英语六级真题

六级25 years ago, Ray Anderson, a single parent with a one-year-old son witnessed a terrible accident which took place when the driver of a truck ran a red light and collided with the car of Sandra D. The impact of the collision killed Sandra instantly.

25年前，有一个一岁儿子的单亲家长雷·安德森目睹了一起可怕的事故，当时一辆卡车的司机闯红灯，与桑德拉·D的汽车相撞。碰撞的冲击力使桑德拉当场死亡。

2007年6月英语六级真题

六级“And most importantly, we’re not giving up a single comfort for our guests.

“最重要的是，我们不会为客人提供任何安慰。

2007年12月英语六级真题

六级this combination of older mothers and more single children could be contributing to the obesity epidemic.

这种年龄较大的母亲和更多的独生子女的结合可能会导致肥胖的流行。

2008年12月英语六级真题

六级“The main motivation behind adopting home working was to increase my own productivity, as a single mum to an 11ue011yearue011old,” says Hargreaves.

哈格里夫斯说：“作为一个11岁孩子的单身妈妈，我在家工作的主要动机是提高自己的生产力。”。

2009年12月英语六级真题

六级75 most US papers focus on a single city, The New York Times is among the few that can 76 national scope—as well as 16 bureaus in the New York area, it has 11 offices around the US and 77 26 bureaus elsewhere in the world.

75大多数美国报纸都专注于一个城市，《纽约时报》是少数能够覆盖76个国家的报纸之一，在纽约地区有16个分社，在美国各地有11个办事处，在世界其他地方有77个26个分社。

2010年12月英语六级真题

四级When a good reader is at work he does not look at letters, nor even at words, one by one however quickly; he takes in the meaning of two, three, or four words at a time, in a single moment.

当一个好的读者在工作时，他不会看字母，甚至不会看单词，无论多么快；他在一瞬间一次理解两个、三个或四个单词的意思。

1991年1月英语四级真题

四级When a good reader is at work he does not look at letters, nor even at words, one by one, however, he quickly takes in the meaning of two, three, or four words at a time, in a single moment.

当一个好的读者在工作时，他不会一个接一个地看字母，甚至不会看单词，然而，他很快就会在一瞬间理解两个、三个或四个单词的含义。

1991年1月英语四级真题

四级Can he escape a pollution that is now so thoroughly distributed throughout our world: We know that even single exposures to these chemicals, if the amount is large enough, can cause extremely severe poisoning.

他能逃脱现在如此彻底地分布在我们世界各地的污染吗

1995年6月大学英语四级(CET-4)真题