六级To be good leaders, managers must pay close attention to their own values, abilities and strengths.

要成为优秀的领导者，管理者必须密切关注自己的价值观、能力和优势。

2011年12月阅读原文

四级On Sunday, the castle’s owner John Gordon, 76, was forced to move out his property after the River Dee swept away about 60 feet of land, leaving the castle dangerously close to the river, according to the Scottish Daily Record.

根据苏格兰每日记录，周日，城堡的主人约翰·戈登（John Gordon），76岁，在迪河冲走了大约60英尺的土地后，被迫搬走了他的财产，使城堡危险地靠近河流。

2016年12月听力原文

考研Besides helping you feel close and connected to people you care about, it turns out that hugs can bring a host of health benefits to your body and mind.

事实证明，拥抱除了能让你与你所关心的人保持亲密关系外，还能给你的身心带来许多健康益处。

2017年考研真题（英语一）完形填空 Section Ⅰ

高考One thing is for certain—Larry went above and beyond the call of duty by getting so close to the burning vehicle! His efforts most likely saved the woman's life.

有一件事是肯定的，拉里如此接近燃烧的汽车，超出了职责范围！他的努力很可能救了那个女人的命。

2016年高考英语全国卷1 完形填空 原文

四级We do our absolute best with a piece of writing, and come as close as we can to the ideal.

我们尽全力写一篇文章，尽可能接近理想。

2015年12月阅读原文

四级We do our absolute best with a piece of writing, and come as close as we can to the ideal.

我们尽全力写一篇文章，尽可能接近理想。

2015年12月四级真题（第二套）阅读 Section B

四级Already, by paying close attention to and interacting with the world and people around him, and without any school-type formal instruction, he has done a task far more difficult, complicated and abstract than anything he will be asked to do in school, or than any of his teachers has done for years.

通过密切关注并与周围的世界和人们互动，在没有任何学校式的正式教育的情况下，他已经完成了一项比学校要求他做的任何事情，或比他多年来的任何老师都要困难、复杂和抽象得多的任务。

2010年6月听力原文

四级Drug abuse is the use of a drug, legal or illegal, that hurts a person or someone close to him.

药物滥用是指使用合法或非法的药物，伤害一个人或他身边的人。

2015年12月四级真题（第二套）听力 Section C

六级virgin Galactic had, prior to this week's accident, seemed closest to starting regular flights.

在本周的事故发生之前，维珍银河似乎离开始定期航班最近。

2015年12月六级真题（第二套）阅读 Section C

六级Since there were few museums anywhere in Europe before the close of the eighteenth century, Grand Tourists often saw paintings and sculptures by gaining admission to private collections, and many were eager to acquire examples of Greco-Roman and Italian art for their own collections.

因为在十八世纪末之前，欧洲几乎没有博物馆，所以大游客经常通过私人收藏来观看绘画和雕塑，许多人渴望为自己的收藏获得希腊罗马和意大利艺术的实例。

2017年6月阅读原文

六级since there were few museums anywhere in Europe before the close of the eighteenth century, Grand Tourists often saw paintings and sculptures by gaining admission to private collections, and many were eager to acquire examples of Greco- Roman and Italian

因为在十八世纪末之前，欧洲几乎没有博物馆，所以大游客经常通过私人收藏的方式观看绘画和雕塑，许多人渴望获得希腊罗马和意大利的范例

2017年6月六级真题（第二套）阅读 Section C

六级They try to develop their skills through close supervision and organized activities, and teach children to question authority figures and navigate elite institutions.

他们试图通过密切的监督和有组织的活动来发展自己的技能，并教孩子们质疑权威人物和管理精英机构。

2017年6月阅读原文

六级Still, there's a huge disconnect between the way we currently train scientists and the actual employment opportunities available for them, and an urgent need for dramatic improvements in training programs to help close the gap

尽管如此，我们目前培训科学家的方式与他们的实际就业机会之间仍然存在巨大的脱节，迫切需要大幅改进培训计划，以帮助缩小差距

2013年12月阅读原文

六级In ponds closest to the colony, the result showed there were far more pollutants than the ponds less affected by the birds.

结果表明，在离蜂群最近的池塘中，污染物远远多于受鸟类影响较小的池塘。

2016年12月听力原文

四级A 16th century castle in Scotland is close to collapsing after lumps of soil were washed away by floods, threatening its foundations.

苏格兰一座16世纪的城堡因洪水冲走了一块块泥土而濒临倒塌，威胁到了它的地基。

2016年12月听力原文

四级Many of its 800 stores are likely to close following the company’s decision to call in administrators after an attempt to sell the business for a token £1 failed.

在试图以1英镑的代币出售该公司业务失败后，该公司决定聘请管理人员，此后，该公司800家店铺中的许多可能会关闭。

2015年12月听力原文

四级Many of its 800 stores are likely to close following the company's decision to call in administrators after an attempt to sell the business for a token £1 failed.

在试图以1英镑的代币出售该公司业务失败后，该公司决定聘请管理人员，此后，该公司800家店铺中的许多可能会关闭。

2015年12月四级真题（第一套）听力 Section A

四级On Sunday, the castle's owner John Gordon, 76, was forced to move out his property after the river Dee swept away about 60 feet of land, leaving the castle dangerously close to the river, according to the Scottish Daily Record.

根据苏格兰每日记录，周日，城堡的主人约翰·戈登（John Gordon），76岁，在迪河冲走了大约60英尺的土地后，被迫搬走了他的财产，使城堡危险地靠近河流。

2016年12月四级真题（第一套）听力 Section A

四级Thirty years after he imagined the city, Park's baby is close to 70 percent built, with 36.

在他想象这座城市的三十年后，帕克的孩子几乎70%都已经建成，36岁。

2019年12月四级真题（第一套）阅读 Section B

四级with this variety will come the end of the close association of age and stage.

随着这一变化，年龄和阶段的密切联系将结束。

2019年6月四级真题（第一套）阅读 Section B

考研Factors such as the place and period in which we are reading, our gender ethnicity, age and social class will encourage us towards certain interpretation but at the same time obscure or even close off others.

我们阅读的地点和时间、性别、种族、年龄和社会阶层等因素会鼓励我们进行某些解读，但同时也会模糊甚至封闭其他解读。

2015年考研阅读原文

考研At RoMan Manufacturing, a maker of electrical transformers and welding equipment that his father cofounded in 1980, Robert Roth keep a close eye on the age of his nearly 200 workers.

在罗曼制造公司（RoMan Manufacturing），罗伯特·罗斯（Robert Roth）密切关注着近200名工人的年龄。罗曼制造公司是他父亲在1980年共同创立的变压器和焊接设备制造商。

2017年考研真题（英语二）阅读理解 Section Ⅱ

六级All researches agree that close to 25 billion devices, things and sensors will be connected by 2020 which incidentally is also the moment that millennials are expected to make up 75 percent of our overall workforce, and the fully connected home will becom

所有研究都一致认为，到2020年，将有近250亿台设备、物品和传感器连接起来，顺便说一句，这也是千禧一代预计将占我们总劳动力的75%的时刻，而完全连接的家庭也将成为可能

2017年12月六级真题（第二套）阅读 Section C

考研finally, figures close to the France government have murmured, euro-zone members should agree to some fiscal and social harmonization: e.g., curbing competition in corporate-tax rates or labour costs.

最后，接近法国政府的人士私下表示，欧元区成员国应该同意某种财政和社会协调：例如，抑制公司税率或劳动力成本方面的竞争。

2011年考研真题（英语二）阅读理解 Section Ⅱ

六级In turn, feeling close to objects can alleviate loneliness.

反过来，靠近物体的感觉可以减轻孤独感。

2019年12月六级真题（第三套）阅读 Section A

高考Already well over 400 of the total of 6, 800 languages are close to extinction, with only a few elderly speakers left.

在总共6800种语言中，已经有超过400种濒临灭绝，只剩下少数老年人。

2018年高考英语全国卷I 阅读理解 阅读C 原文

六级The retailer also announced the locations of 36 stores it will close in early 2016.

该零售商还宣布了将于2016年初关闭的36家门店的位置。

2017年6月阅读原文

四级He knew my love for yoga and had seen a space close to where he lived that he thought might be good to serve as a yoga studio.

他知道我对瑜伽的热爱，并在他住的地方附近看到了一个空间，他认为作为一个瑜伽工作室可能会很好。

2017年6月阅读原文

高考On horseback it is possible to get quite close to elephants, giraffes and many other animals.

在马背上，可以非常接近大象、长颈鹿和许多其他动物。

2015年高考英语重庆卷 阅读理解 阅读D 原文

四级Obviously there are cultural differences, but if you were talking to another person and they came up close in your personal space, you wouldn't think that's the kind of thing a properly brought-up person would do.

很明显，文化差异是存在的，但是如果你和另一个人交谈时，他们在你的私人空间里走得很近，你不会认为一个正常成长的人会这样做。

2016年6月阅读原文

四级Some asked subjects about incidents where someone close to them一family or friend一had called them by another person's name.

一些人询问了受试者与他们亲近的人发生的事件一家人还是朋友一用另一个人的名字叫他们。

2019年6月四级真题（第一套）阅读 Section C

高考Looking back on your day, you will find it hard to deny that a horseback safari is as close as you will ever come to answering the call of the wild.

回首你的一天，你会发现很难否认，马背狩猎是你永远不会来回应野生的召唤。

2015年高考英语重庆卷 阅读理解 阅读D 原文

六级People who lack close friends have greater levels of anxiety and depression than people who are close to others.

缺乏亲密朋友的人比与他人关系密切的人焦虑和抑郁程度更高。

2010年6月听力原文

四级Already, by paying close attention to and interacting with the world and people around him, and without any school-type formal instruction, he has done a task far more difficult, complicated and abstract than anything he will be asked to do in school, or than any of his teachers has done for years

通过密切关注并与周围的世界和人们互动，在没有任何学校式的正式教育的情况下，他已经完成了一项比学校要求他做的任何事情，或比他多年来的任何老师都要困难、复杂和抽象得多的任务

2010年6月听力原文

考研It has not gotten anywhere close to that, and one big reason is sticker shock.

它还没有达到这一点，一个主要原因是贴纸冲击。

2017年考研阅读原文

六级The apartment is close to the campus.

公寓离校园很近。

2012年6月听力原文

六级Yet it is worth noting that even if Apple ultimately loses this case, it has plenty of technical means to close a backdoor over time.

但值得注意的是，即使苹果最终败诉，它也有很多技术手段来关闭后门。

2017年12月六级真题（第三套）阅读 Section B

考研But the article is actually quite optimistic, as it outlines a potential solution to this problem, suggesting that an approach can close 63 percent of the achievement gap between first-generation and other students.

但这篇文章实际上相当乐观，因为它概述了这个问题的潜在解决方案，表明一种方法可以缩小第一代学生和其他学生之间63%的成绩差距。

2015年考研真题（英语二）阅读理解 Section Ⅱ

高考The idea is that white coats are associated with scientists, who are in turn though to have close attention to detail.

这一想法是，白大褂与科学家联系在一起，而科学家反过来又密切关注细节。

2017年高考英语浙江卷（11月） 阅读理解 阅读B 原文

四级There are close to one million nerve fibres that connect the eyeball to the brain, as of yet it is impossible to attach them all in a new person.

有将近一百万条神经纤维将眼球和大脑连接起来，到目前为止，还不可能将它们全部连接到一个新人身上。

2011年6月听力原文

四级It deserves our closest attention

它值得我们密切关注

2011年6月阅读原文

六级Smart basketball players or skilled musicians need to pay close attention to the demands of high performance, to the challenges to be overcome.

聪明的篮球运动员或熟练的音乐家需要密切关注高性能的要求，以及需要克服的挑战。

2019年6月六级真题（第一套）听力 Section C

六级He positioned the table so that he could move close to the audience that's the strategic point in the speech.

他把桌子放好，这样他就可以靠近听众——这是演讲的战略要点。

2013年12月听力原文

高考Leave it open when you're available to talk and close it when you're not.

有空说话时让它开着，没空时关上。

2017年高考英语全国卷2 阅读理解 七选五 原文

六级Still, there's a huge disconnect between the way we currently train scientists and the actual employment opportunities available for them, and an urgent need for dramatic improvements in training programs to help close the gap.

尽管如此，我们目前培训科学家的方式与他们的实际就业机会之间仍然存在巨大的脱节，迫切需要大幅改进培训计划，以帮助缩小差距。

2013年12月阅读原文

六级Are people suffering from gadget overload? Are they exhausted by the consumer equivalent of the brain fatigue—information overload—that is caused by constant updates of devices and online media?As you are probably aware, the latest job markets news isn’t good: Unemployment is still more than 9 percent, and new job growth has fallen close to zero.

人们是否正遭受着电子设备过载的痛苦？他们是否因消费者的大脑疲劳而精疲力竭，这相当于设备和在线媒体的不断更新所导致的信息过载？正如你可能知道的，最新的就业市场消息并不好：失业率仍然超过9%，新的就业增长率已经接近于零。

2015年12月听力原文

六级As you are probably aware, the latest job markets news isn't good: Unemployment is still more than 9 percent, and new job growth has fallen close to zero.

正如你可能知道的，最新的就业市场消息并不好：失业率仍然超过9%，新的就业增长已经接近于零。

2015年12月六级真题（第二套）听力 Section C

高考However, the closest supply was over 1, 000 miles away, in anchorage.

然而，最近的供应地在1000多英里外的安克雷奇。

2016年高考英语北京卷 完形填空 原文

六级The bird Clark's nutcracker, for example, hides up to 100, 000 seeds per year, up to 30 kilometers away from the seed source, and has a very close symbiotic(共生的) relationship with several pine species, most 32 notably the whitebark pine.

例如，鸟类克拉克的胡桃夹子每年隐藏多达10万颗种子，距离种子源30公里，并且有非常密切的共生关系(共生的) 与几种松树物种的关系，最明显的是白皮松。

2016年12月六级真题（第一套）阅读 Section A

六级It has been the subject of your close scrutiny every morning since you were tall enough to see into the bathroom mirror.

它一直是你每天早上仔细检查的主题，因为你足够高，可以看到浴室的镜子。

2013年12月阅读原文

考研But if the district is essentially giving a pass to students who do not do their homework because of complicated family lives, it is going riskily close to the implication that standards need to be lowered for poor children.

但是，如果学区本质上是给那些因为复杂的家庭生活而不做家庭作业的学生颁发通行证，那么这就有可能接近于意味着需要降低贫困儿童的标准。

2012年考研真题（英语二）阅读理解 Section Ⅱ

考研This has created "a paradox" in that recruiting first-generation students, but then watching many of them fail, means that higher education has "continued to reproduce and widen, rather than close" an achievement gap based on social class, according to th

这造成了一个“悖论”，即招收第一代学生，但随后看着他们中的许多人失败，这意味着高等教育“继续复制和扩大，而不是缩小”基于社会阶层的成就差距

2015年考研真题（英语二）阅读理解 Section Ⅱ

高考Still others may simply enjoy being outdoors and close to plants.

还有一些人可能只是喜欢呆在户外，靠近植物。

2016年高考英语全国卷2 阅读理解 七选五 原文

高考Still, most of us volunteers breathe a sigh of relief when the season comes to a close.

然而，当季节结束时，我们大多数志愿者都松了一口气。

2019年高考英语全国卷2 阅读理解 阅读B 原文

六级It's located in a quiet building and it's close to bus lines

它位于一座安静的大楼里，靠近公交线路

2010年12月听力原文

六级It's located in a quiet building and it's close to bus lines.

它位于一座安静的大楼里，靠近公交线路。

2010年12月听力原文

考研Justice Anthony Kennedy,joined by Chief Justice John Roberts and the Court's liberals,ruled that the state flew too close to the federal sun.

安东尼·肯尼迪大法官、首席大法官约翰·罗伯茨和法院自由派人士裁定，该州离联邦太阳太近。

2013年考研阅读原文

六级The apartment is close to the campus

公寓离校园很近

2012年6月听力原文

高考Get up close to the monuments and memorials as you bike the sites of capital hill and the national mall.

骑自行车游览首都山和国家广场时，请靠近纪念碑和纪念馆。

2018年高考英语全国卷I 阅读理解 阅读A 原文

四级The closest that Herpin came to resting was to sit in a rocking chair and read a half dozen newspapers.

赫宾最接近休息的地方就是坐在摇椅上看六份报纸。

2014年6月听力原文

六级For the same reason, he placed the chairs close to each other and raised the temperature to a slightly uncomfortable level.

出于同样的原因，他把椅子靠得很近，把温度提高到一个稍微不舒服的水平。

2013年12月听力原文

考研Justice Anthony Kennedy,joined by Chief Justice John Roberts and the Courts liberals, ruled that the state flew too close to the federal sun.

安东尼·肯尼迪大法官、首席大法官约翰·罗伯茨和自由党法庭裁定，该州离联邦太阳太近。

2013年考研真题（英语一）阅读理解 Section Ⅱ

考研They cite past research by several authors to show that this is the gap that must be narrowed to close the achievement gap.

他们引用了几位作者过去的研究来表明，为了缩小成就差距，必须缩小这一差距。

2015年考研真题（英语二）阅读理解 Section Ⅱ

高考For the past two years, Gordon's students have been studying ways to kill bacteria in zero gravity, and they think they're close to a solution.

在过去的两年里，戈登的学生们一直在研究在零重力下杀死细菌的方法，他们认为他们已经接近解决方案了。

2019年高考英语全国卷2 阅读理解 阅读D 原文

高考Hoping that no one would notice that I was shaking inside, I threw my voice as far as it would reach: "Put your heads on the desks and close your eyes! We are going on a journey."

我希望没有人会注意到我在里面发抖，我把声音尽量放远：“把头放在桌子上，闭上眼睛！我们正在旅行。”

2015年高考英语湖南卷 完形填空 原文

高考I figured whoever lost the dog was probably just as close to it as I am to my dogs, says ehlers.

埃勒斯说：“我想无论是谁丢了这条狗，可能和我和我的狗一样接近。”。

2019年高考英语全国卷2 完形填空 原文

高考I think the supermarket is close now.

我想超市现在关门了。

2016年高考英语北京卷 听力 原文

高考Students are to close kitchen doors after cooking.

学生做饭后要关上厨房的门。

2015年高考英语天津卷 阅读理解 阅读A 选项

高考The fine selection of the major works was done in close collaboration with the museo nacional reina sofia in madrid, spain, and with contributions from other institutions like the salvador dali museum in st.

主要作品的精选工作是与西班牙马德里的国家雷纳索非亚博物馆密切合作完成的，并得到了其他机构的捐赠，如圣路易斯的萨尔瓦多达利博物馆。

2015年高考英语全国卷1 阅读理解 阅读C 原文

高考The movie is set in a small town where the only movie theater is preparing to close down.

这部电影以一个小镇为背景，那里唯一的电影院正准备关闭。

2017年高考英语全国卷3 阅读理解 阅读B 原文

高考The need to be close to nature.

亲近自然的需要。

2017年高考英语天津卷 阅读理解 阅读B 选项

高考The shops would soon close, and all the people would go home.

商店很快就会关门，所有的人都会回家。

2015年高考英语湖北卷 完形填空 原文

高考While, deep down, we know we can do it, our mind—or the minds of those close to us—usually says we can't.

然而，在内心深处，我们知道我们能做到，我们的思想或我们身边的人的思想通常说我们做不到。

2015年高考英语福建卷 阅读理解 阅读D 原文

四级In the Great Depression many unhappy couples close to stick together because

在大萧条时期，许多不幸福的夫妻因为婚姻关系而依偎在一起

2012年6月阅读原文

四级It deserves our closest attention.

它值得我们密切关注。

2011年6月阅读原文

四级It's southwest, so it isn't really very close to Amitsville at all and it's a long drive.

它位于西南部，所以它离阿米茨维尔一点也不近，而且车程很长。

2013年12月听力原文

四级They are quite close to each other

他们彼此非常接近

2013年12月听力原文

四级He likes to work in a company close to home.

他喜欢在离家近的公司工作。

2013年6月听力原文

四级Why do Japanese listeners sometimes close their eyes while listening to a speech?

为什么日本听众在听演讲时有时会闭上眼睛？

2011年12月听力原文

四级She could work close to her family.

她可以和家人一起工作。

2010年12月听力原文

四级finally, the FBI received a tip that the stolen document was located very close to Washington, D.C.

最后，联邦调查局收到一条消息，说被盗文件的位置非常靠近华盛顿特区。

2018年6月四级真题（第二套）阅读 Section C

四级The other surveys asked about times when subjects had themselves called someone close to them by the wrong name.

其他调查询问了受试者自己用错误的名字称呼身边人的情况。

2019年6月四级真题（第一套）阅读 Section C

四级They were very close together and there was a lot of noise and movements.

他们靠得很近，有很多噪音和动作。

2017年6月四级真题（第二套）听力 Section A

六级But one costs $50 a dose and the other close to $2,000.

但是一剂50美元，另一剂接近2000美元。

2015年12月阅读原文

六级Plus, we live in a culture that caters to the late-nighter, from 24-hour grocery stores to online shopping sites that never close.

此外，我们生活在一种迎合深夜的文化中，从24小时营业的杂货店到从不关门的在线购物网站。

2015年12月六级真题（第二套）阅读 Section A

六级Such initiatives close doors for many pupils.

这样的举措对许多学生来说都是闭门造车。

2019年12月六级真题（第三套）阅读 Section C

六级This is surprising when you consider the prevailing emphasis by scholars and trainers and managers on the importance of cultivating close interpersonal relationships at work.

当你考虑到学者、教练和管理者在工作中培养亲密人际关系的重要性时，这是令人惊讶的。

2019年6月六级真题（第三套）阅读 Section C

考研The cost of solar panels has dropped by 80 percent and the cost of wind turbines by close to one-third in the past eight years.

在过去八年中，太阳能电池板的成本下降了80%，风力涡轮机的成本下降了近三分之一。

2018年考研真题（英语二）阅读理解 Section Ⅱ

六级consciousness raising, and non-sexist child rearing would close the gender divide once and for all.

提高意识和无性别歧视的育儿方式将一劳永逸地弥合性别鸿沟。

2014年6月阅读原文

六级This increases the student-teacher ratio by a factor of close to a thousand.

这使师生比例增加了近千倍。

2014年6月大学英语六级考试真题（三）

六级Yet it’s worth noting that even if Apple ultimately loses this case, it has plenty of technical means to close a backdoor over time.

然而，值得注意的是，即使苹果最终输掉了这场官司，随着时间的推移，它也有足够的技术手段来关闭后门。

2017年12月英语六级考试真题（卷三）

六级Possibly the agencies in charge of drafting the decisions are too close to the industries they are supposed to regulate.

可能负责起草决定的机构与他们应该监管的行业过于接近。

2020年12月六级真题（第1套）

六级America’s most popular newspaper website today announced that the era of free online journalism is drawing to a close.

美国最受欢迎的报纸网站今天宣布，免费在线新闻时代即将结束。

2010年12月英语六级真题

四级After stopping you, he holds a small electronic device close to his face and speaks slowly into it, saying, in English: “Can you tell me where I can buy some sauerkraut?

拦住你后，他把一个小电子设备放在脸上，对着它慢慢地说，用英语说：“你能告诉我在哪里可以买到酸菜吗？”？

1990年1月英语四级真题

四级Therefore, the close relationship which the advertisers had with radio programs became the system for American TV.

因此，广告商与广播节目的密切关系成为美国电视的制度。

1991年1月英语四级真题

四级The world is known to us through many senses, not just hearing, smell, vision, and at close range, touch and taste.

我们通过许多感官了解这个世界，而不仅仅是听觉、嗅觉、视觉，还有近距离的触觉和味觉。

1992年1月大学英语四级(CET-4)真题

四级Some stay very close to the words on the page; others take off imaginatively from the words, interpreting, criticizing, analyzing and examining.

有些人非常接近页面上的文字；另一些人则从文字中想象起飞，进行解读、批评、分析和审视。

1994年1月大学英语四级(CET-4)真题

四级When children understand that the light of the lightning flashing reaches their eyes almost at the same moment, but the sound of the thunder takes about 5 seconds to travel just one mile, they can begin to time the interval between the flash and the crash to learn how close they were to the actual spark.

当孩子们明白闪电的光几乎在同一时刻到达他们的眼睛，但雷声只需5秒就可以传播一英里时，他们可以开始计时闪电和撞击之间的间隔，以了解他们离实际火花有多近。

1994年1月大学英语四级(CET-4)真题

四级Since being close to another person signals the possibility of interaction.

因为与另一个人亲近预示着互动的可能性。

1996年6月大学英语四级(CET-4)真题

四级This is perhaps the first generation of American youngsters (年轻人) who have never been close by during the birth of a baby and have never experienced the death of a family member.

这也许是美国第一代年轻人(年轻人) 他们在婴儿出生时从未靠近过，也从未经历过家庭成员的死亡。

1996年6月大学英语四级(CET-4)真题