大学英语四级考试真题及答案【范例2篇】
大学英语四级考试真题涵盖听力、阅读、写作和翻译,考查学生综合英语能力,提供真实考试体验与参考答案。下面是勤劳的小编为大家分享的大学英语四级考试真题及答案范例,欢迎借鉴参考。
大学英语四级考试真题及答案 篇1
The stone age, The Iron Age. Entire epochs have been named for materials. So what to call the decades ahead? The choice will be tough. Welcome to the age of superstuff. Material science -- once the least sexy technology – is bursting with new, practical discoveries led by superconducting ceramicsthat may revolutionize electronics. But superconductors are just part of the picture: from house and cars to cook pots and artificial teeth, the world will someday be made of different stuff. Exotic plastics, glass and ceramics willshape the future just as surely as have genetic engineering and computer science.
The key to the new materials is researchers’ increasing ability to manipulate substances at the molecular level. Ceramics, for example, have long been limited by their brittleness. But by minimizing the microscopic imperfections that cause it, scientists are making far stronger ceramics that still retain such qualities as hardness and heat resistance. Ford Motor Co. now uses ceramic tools to cut steel. A firm called Kyocera has created a line of ceramic scissors and knives that stay sharp for years and never rust or corrode.
A similar transformation has overtaken plastics. High-strength polymers now form bridges, ice-skating rinks and helicopter rotors. And one new plastic that generates electricity when vibrated or pushed is used in electric guitars, touch sensors for robot hands and karate jacketsthat automatically record each punch and chop. Even plastic litter, which once threatened to permanently blot the landscape, has proved amenable to molecular tinkering. Several manufacturers now make biodegradable forms; some plastic six-pack rings for example, gradually decompose when exposed to sunlight. Researchers are developing ways to make plastics as recyclable as metal or glass. Besides, composites – plastic reinforced with fibers of graphite or other compounds – made the round-the-world flight of the voyager possible and have even been proved in combat: a helmet saved an infantryman’s life by deflecting two bullets in the Grenada invasion.
Some advanced materials are old standard with a new twist. The newest fiberoptic cable that carry telephone calls cross-country are made of glass so transparent that a piece of 100 miles thick is clearer than a standard window pane.
But new materials have no impact until they are made into products. And that transition could prove difficult, for switching requires lengthy research and investment. It can be said a firmer handle on how to move to commercialization will determine the success or failure of a country in the near future.
1. How many new materials are mentioned in this passage?
[A] Two
[B] Three
[C] Four
[D] Five
2. Why does the author mention genetic engineering and computer science?
[A] To compare them with the new materials.
[B] To show the significance of the new materials on the future world.
[C] To compare the new materials to them.
[D] To explain his view point.
3. Why is transition difficult?
[A] Because transition requires money and time.
[B] Because many manufacturers are unwilling to change their equipment.
[C] Because research on new materials is very difficult.
[D]Because it takes 10 years.
4. Where lies success of a country in the New Age of superstuff?
[A] It lies in research.
[B] It lies in investment.
[C] It lies in innovation.
[D] It lies in application.
Vocabulary
1. superstuff 超级材料
2. superconducting ceramic 超导陶瓷
3. exotic 神奇的
4. shape 塑造,成型
5. brittleness 脆性
6. polymer 聚合体
7. karate jacket 空手道外衣
8. touch sensor 触及传感器
9. each punch and chop 每一个击、打
10. blot 玷污,损害风景的东西
11. tinker 修补,调整
12. amendable 服从于,遵循的
13. biodegradable 能生物递减分解的
14. six-pack rings 放六个罐子的环状物
15. decompose 分解
16. recyclable 可循环(使用的)
17. infantryman 步兵
18. deflect 使偏斜,使转向
19. a new twist 一个新的观点,方法
难句译注
1. Material science – once the least sexy technology – is bursting with new, practicaldiscoveries led by superconducting ceramics that may revolutionize electronics.
【参考译文】材料科学,一度曾是最无吸引力(最不起眼)的技术,正以崭新的 ,以超导陶瓷为首的种种实用性发明绽开新颜。这种超导陶瓷可能会使电子技术彻底改变。
2. Some advanced materials are old standard with a new twist. The newest fiberopticcables that carry telephone calls cross-country are made of glass so transparent that a piece of100 miles thick is clearer than a standard window pane.
【参考译文】有些高级材料是带有新方法的老标准。最新全国电话的光纤电缆由玻璃制成。这种玻璃透明度极高,一片100英里厚的玻璃比一块标准的窗框玻璃还要清晰透明。
写作方法与文章大意
这是1篇介绍“超导材料”的论说文,采用一般到具体的分类写作手法。先指出未来时代的材料属于超导,然后再提出三种超导材料,再逐一说明。
答案详解
1. B 三种超导材料。答案再第一段最后一句“神奇的塑料、玻璃和陶瓷”。下面各段具体讲这三种材料。第二段讲陶瓷:“新材料之关键在于研究工作者不断提高在分子水平上处理物质的能力。举陶瓷为例,由于它的脆性,长期来应用范围有限。但是通过改善导致脆性的微小缺陷,科学家制造出一种保持原有硬度和抗热性,但坚实得多的陶瓷”。第三段讲塑料。“类似的转折发生在塑料上,高强度的塑料建成了桥梁、溜冰场、直升机的叶轮。一种震动或推动就能发电的`新型塑料用于电子吉他上,触及传感塑料用于机械手和空手道外衣上,它能自动记录每次击打。”后面谈及塑料垃圾可以处理,或者制造可分解还原的塑料制品。塑料内加入其他化合物加强性能。第四段讲有些高级材料由新的改变,最新的光纤电缆由玻璃制成,透明度极高,100英里厚的一块其清晰度比一块普通窗玻璃还高。
2. B 说明这种新材料对未来世界的意义。答案在第一段:“神奇的塑料、玻璃和陶瓷一定会象生物工程和计算机一样将改变世界。”A. 把它们和新材料相比较,这里不仅仅是比较,而是说明三者都具同样的作用--改变世界。 C. 把新材料比作它们。也不仅仅是比喻比拟。 与A一样没有说到核心电。D. 说明他的观点。太笼统。
3. A 转折需要钱和时间。见最后一段“可是新材料只有制成产品才有影响,而这个转折可能很困难,因为转折需要长期的研究和投资。可以这么说,在不久的将来,更牢牢地掌握如何把材料转变成商品将决定一个国家之成败。”B. 因为许多制造商不愿改变他们的设备。C. 因为新材料的研究非常困难。 D. 转折要华上十年时间。这三项文内没有涉及。
4. D 在超级材料时代已过之成功在于应用。A. 在于研究。B. 在于投资。C. 在于革新。这三项都是应用的部分前提。其中A和B文内提到,C项文内未涉及。
大学英语四级考试真题及答案 篇2
ignorant of the law is not accepted as an ________ for breaking the law.
A) excuse
B) intention
C) option
D) approval
two days, the army fired more than two hundred rockets and missiles at military ________ in the coastal city.
A) goals
B) aims
C) targets
D) destinations
is said in some parts of the world, goats, rather than cows, serve as a vital ________ of milk.
A) storage
B) source
C) reserve
D) resource
4.“This light is too ________ for me to read by. Don’t we have a brighter bulb some where”; said the elderly man.
A) mild
B) dim
C) minute
D) slight
have arranged to go to the cinema on Friday, but we can be ________ and go another day.
A) reliable
B) probable
C) feasible
D) flexible
给大家留一点作业,建议准备参加六月份考试的同学练习一下,主要是对以往节目内容的复习。
1)翻译:________(随着失业率的上升), workers who are 50 to 60 years old are usually the first to be laid off.
2)翻译:________(被电视上的超级巨星所鼓舞) , the young athletes trained hard and played intensely.
第一题:
excuse:v. 原谅,申辩,做为。的托辞;n. 致歉,理由
intention:n. 意图,目的,观念
option:n.意见,见解;主张;评价
approval: n. 赞成,承认
第二题:
goal:n. 目标,终点
aim:n. 目的,目标,瞄准,针对;vi. 目的在于,企图,瞄准,对准;把…瞄准,把…对准
target:n. 靶子,目标,(嘲笑、批评、轻蔑等的)对象,目标,拟达到的总数指标
destination:n. 目的地,终点,目的,目标
第三题:
vital:a. 重要的,充满活力的,生死攸关的
storage:n. 贮藏,存储,存储器
source:n. 根源,来源,出处n. 根源,来源,出处
reserve:n. 预备品,贮存,预备舍;v. 保留,预订,延期
resource:n. 资源,策略,机智
第四题:
mild:a. 温柔的,文雅的,轻微的,不重的,(烟、酒)味淡的
dim:a. 暗淡的,模糊的;v. 使。暗淡;
minute:微小的;琐细的;详细的;精密的
slight:a. 少许的,稍微的;vt. 轻视
第五题:
reliable:a. 可靠的,可信赖的
probable:a. 很可能的,大概会的,有希望的,有可能是真实的
feasible:a. 能实行的,可行的,适宜的
flexible:a.可弯曲的,易弯曲的;柔韧的;有弹性的;柔顺的,温顺的;可变通的;灵活的;易适应的
1.答案:A
参考译文:不懂法不能作为违法的借口
题目分析:本题是一个比较典型的非谓语动词的题目。其中句子的主语为Being ignorant of the law,是动名词作主语。这样的题目在翻译题目中是非常容易考到的
考点解析:本题考查意思比较类似的四个动词意思的辨析。excuse一词大家经常用到的是它的动词的意思,本题主要考查它的名词的意思。approval一词由动词approve转化而来,注意其词性是名词,而不是形容词。
2.答案:C
参考译文:两天内军队向该沿海城市的军事目标发射了两百多枚火箭和导弹
题目分析:本题题干的结构比较简单,是一个简单句。
考点解析:本题四个选项的词汇都表示目标的意思,据题考查的是对四个词汇所表达的意思的微小差别上。goal指人们心目中较为理想或遥远的目标,这类目标的完成需要投入大量时间和精力,但能否完成还不能确定。aim通常指做具体一件事的目的所在,或做该件事所想达到的结果。target的本意是靶子,引申为指标或攻击,言论的对象。destination是指人或物去往的目的'地。根据题意可知该目标是火箭和导弹攻击的目标,选targets最为合适。
3.答案:B
参考译文:据说在世界上别的国家,山羊是重要的奶源而非奶牛。
题目分析:本题题干的结构比较简单,但是有三个地方需要注意,首先,注意固定搭配it is said...表示据说。的意思。, rather than cows,是我们之前讲过的一个结构,插入结构。在这个插入结构中需要注意rather than这个词组,它是否定词组,也就是not的意思。在四六级阅读这种泛读性质的考题中,对一些比较细的词汇的理解对解题的正确与否有很大的关系。如果不知道rather than这个词的否定意思,就会把题目的意思弄反。
考点解析:由题目上下文的vital和of milk可知,所需填入的需是一个名词,所以对于B,C两项只需考虑它的名词意思。比较容易混淆的是source和resource,前者表示来源,后者表示资源不要弄混。
4.答案:B
参考译文:这样的的灯光下读书对我来说太暗了。我们好象在什么地方有瓦数大点的灯泡吧。
题目分析:本题结构简单,只需注意结构too...for do sth.即可。
考点解析:本题根据上下文Don’t we have a brighter bulb some where中的brighter可以确定需填入与其提寺相反的单词,即dim.
注意:
1)minute的形容词性的意思是我们不常见的,本题的提示部分给出了它的形容词词义,需要特别记一下。
2)mild一词的意思比较多,但是都是比较接近的意思,牢记。
5.答案:D
参考译文:我们上星期五准备要去看电影,但是或许我们可以看情况,改天再去。
题目分析:本题结构比较简单,是一个简单句。
考点解析:本题四个选项都是一ible结尾的形容词,但意思的差别还是比较大的根据题目的上下文,可以很容易的将答案选出。题目中由两个分句组成,第二个以but开头,表示与前半句是转折关系,而后半句中还有一个and将所选词和go another day连接在一起,两者是并列的关系,由此可知答案选flexible.
解题小技巧:我经常在题目中讲到的结合上下文是一种很好的解题技巧。对于一些句子中存在一些连解词,例如and,but,or等,根据其前后分句的逻辑关系,可以很快找到与所需填入的词汇有对应关系的词汇。这样的词叫作标志词。上下文给得越多,标志词也就会越多,题目的难度也就越低。这种方法最典型的应用就是完型填空,以及四级中的选词填空。其实这也是出题人索要考察大家的一种能力。有机会如果条件允许的话我可以用此方法帮大家分析1篇完型文章,不知大家觉得如何?
作业答案:
1)第五期的第二题,考查分词作伴随状语。
With the increasing unemployment rate
2)第六期第五题,考查分词短语作原因状语。
inspired by the superstars on television
请大家仔细体会两个句子的不同
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