大学英语快速阅读课件
大学英语快速阅读课件
大学英语四六级快速阅读冲刺技巧
快速阅读，就是在有限的时间内找到所需要的信息——既强调速度(Speed)又强调准确度(Accuracy)。根据大纲要求，快速阅读主要考察的技巧是查读(Scanning)和略读(Skimming)。因为熟练掌握这两种阅读方法，能够把阅读的目的更直接地投入到阅读的过程之中，从而更有效地提高阅读速度，同时提高阅读的准确度。因此，提高略读和查读的能力，有助于我们平时学习时快速查找资料或自己所需要的信息。 1) 略读步骤所谓略读，顾每思义是一种省略的读法。略读，能够让你以最快的速度阅读，选择性地遗漏某些细节内容，目的是获得文章的主旨大意。在回答主旨题目的时候，略读就能派上用场。不仅如此，进行略读有助于我们了解文章的大意、作者的观点，这样对我们做推论题也大有裨益。
这种选择性的阅读方法，特点是“省略细节找主旨”，注重对全文整体内容的把握。但是，这里需要强调，“省略细节”是选择性的省略。因为主旨也是可以从一些细节中透露出来的，所以有些细节是有助于我们掌握大意的。那么在略读的过程中，关键点就是更多地关注并抓住文章中这些标志性的词句，例如文章的标题、章节标题、斜体字、黑体字、每段的开头和结尾、以及文章中能够代表观点的句子。而其他的个别生词和介绍性质的语句(如说明时间、地点等的词汇)则可以略过。
总之，在采用略读方法的时候，往往能够帮助我们确定：文章的主题
和作者的观点(属于主旨题)，文章的结构和作者的风格(属于推论题)。而在略读时，可以遵循以下步骤：
a。快速阅读文章第一、二段，抓住文章大意、背景和作者风格，因为作者一般会在文章开头几段概述全文;
b。快速浏览找出每段的中心句和几件事实，抓住一两个关键词，如果文中段落大意没有用一句话总结，就自己归纳出大意，在可能蕴含全文主旨的部分进行仔细阅读;
c。注意转折词和序列词，有助于我们了解文章的脉络;d。省略不必要的细节内容，从而追求最快的略读速度。
查读步骤
查读是以某个细节的关键词为目标，目光很快地扫过文章，直到发现与问题
有关的文字，迅速锁定答案。在回答细节题目的时候(也就是我们通常所说的五个“W”
和一个“H"，即What，Who，When，Where，Why，How)，查读的效率之高就突显出来了。
这种有选择性的阅读，特点是“带着问题找答案”，也就是说，在阅读文章之前就已经明白要回答什么样的问题，要找出什么方面的信息，然后带着这些问题进行阅读，在文章中找出某些具体的事实和信息。就像我们查电话号码本一样，可以根据被查询者姓名的开头字母，按字母顺序快速找出电话号码。
这种“带着问题找答案”的方法，关键点就在于要熟悉不同体裁文章
大学英语快速阅读1翻译
Why I Love the City 我的许多朋友都离开了这座城市。它们是在郊区买房子,因为他们想要远离城市的喧嚣、烟雾、交通、和犯罪的城市。一个朋友说,“有太多的空气污染的城市。我更喜欢郊区,那里的空气是那么清新。“另一个朋友抱怨交通:“有太多的汽车市区!你不能找到一个停车的地方,交通堵塞的情况都很可怕。“每个人都在抱怨关于犯罪:“城市有许多罪犯。我很少离开我的房子”的幻影却如太危险了。 在我朋友搬离城市,他们通常会背诵优势郊区生活:绿草、花卉、游泳池、烤肉等等。然而在我的朋友们在那里住了一年左右的时间里,他们意识到郊区生活就不那么愉快,因为他们期待。这种变化的原因是什么?他们的花园!他们很快了解到,一个不可避免的一部分yardwork郊区生活。他们整个周末都在工作在他们的花园,它们是非常累的一把,又要取他们的水池游泳甚至做一些肉放在他们的烤肉。又有另一个投诉:他们不能住在郊区没有一辆车。我的大多数朋友都搬到郊区,避开塞车,但现在他们不得不上班市中心。他们坐在一个繁忙的公路每天两个小时! 我的意见是非常不同的城市生活,从我朋友的我住在市区吗?和我爱它! ! !为什么?嗯,首先,我喜欢nature-flowers、绿草、树木和动物。在这个城市里,我有一切优势自然:我可以步行通过公共公园,闻闻花香,坐在草地上在树下。我可以参观,动物园里的动物。然而到目前为止我还没有一个缺点:我不需要做yardwork或喂动物。同时,在这个城市,到处都可以让我乘公共汽车吗?如果有交通堵塞,我可以走回去。 似乎每个人都搬到郊区,避免罪恶的大城市。我有一个理论的城市犯罪的,然而,所以我觉得安全罪犯将反映在社会生活的变化:如果人们买了房子在郊区,罪犯将步其后尘。罪犯想避免噪音、烟雾、污染了。不久,过于拥挤和犯罪的问题,而不是城市郊区! People on the Move 美国人的历史,在某种程度上,历史运动的美国人民。他们移到东海岸的殖民地到开放空间的西部。从乡下搬,农场到城里去。最近,美国人一直不断地由城市郊区。 开放空间;西部地区迁移 美国人开始先驱移动,从东海岸到西250年前。他们向西边移居的原因有许多种。一个理由是无限的开放空间的可用性和土地耕作。美国人喜欢大的开放空间,他们也喜欢独立和自由发展的土地以他们自己的方式。一些土地变得农场。重要的矿产资源被发现在某些地区,因此有一些那地就都归了地雷。其他大型地区成为牛牧场。似乎对每个人都有足够的土地。但这是一个困难的生活——一种无止境的工作和困难。 城市 1860年以后,工业革命改变了美国。美国人学会了如何生产的钢铁。他们开始生产石油。汽车被发明了。工厂各类开始出现,而在城市开始长大了工厂周围。农民和其他的国家里,人们搬到越来越多的城市人为了寻找工作,更容易的生活。在1900年代早期,城市工作忙、令人激动的地方。然而,也有很多贫穷和困苦。 城市增长的城市建筑taller-and不必得到增长out-they展开的中心。私有房屋和门廊与码就消失了。公寓,每一个个子比下、就住在他们的地方。越来越多的人搬到城市,越来越大,城市。 一些城市不能分散因为没有房间这么做。这些城市,纽约就是一个最好的例子,变得越来越拥挤。更多的人意味着更多的汽车、卡车、公交车、更大的噪音,更多的污染,以及更多的犯罪。许多城市变得丑陋肮脏。有些人而有些公司开始离开城市搬到郊区城市外围。 郊区 搬到郊区的仍然是发生。美国人正在寻找一小块土地,他们可以叫他们自己。他们想要一座房子和院子。然而,他们不想放弃好的工作在城市。在许多情况下,公司在郊区给他们的工作。在其他情况下,美国人常常通勤到城市,在城市他们职业。近年来,越来越多的企业开始向郊区迁移。他们吸引了很多人,郊区变得拥挤。 接下来要做什么? 美国人看了他们缓慢下落到大城市年久失修而死。许多人离开了城市中产阶级,只有非常富有的人和很多贫困的人呆在后面。有关美国人正设法解决这一问题的噪音、灰尘、犯罪和污染在大城市里。他们正试图重建坏的部分城市为了吸引和保持业务的人。他们正在努力使他们的城市美丽。如今,许多美国人都正在考虑搬回了城市。 其他美国人发现甚至郊区已经变得太拥挤了。他们正在寻找无污染的开阔空间和作为独立的生活方式。他们准备离开郊区到乡下。 也许美国人总是会在前进。 Caution: Bumpy Road Ahead
新视野大学英语快速阅读第三册答案全[1].
新视野大学英语快速阅读第三册答案全 Unit1 Passage1 1—5 DCDCD 6—8 AAB Passage2 1 smart enough 2 enters the house 3 only one act 4 properly trained 5 race horses 6 500 to 600 7 because used to each other 8 family or food Passage3 1—5 ADDAD 6—7 AC 8 talking 9 direct commands 10 cultural,not personal Passage4 1—5 Y Y N NG N 6—7 N Y
8 the individual 9 responsible behavior 10 written budget Unit2 Passage1 1—5 Y Y N Y N 6—8 N NG Y Passage2 1 the use of drugs 2 dull and hopeless 3 more and more drugs 4 LSD 5 really able to do 6 long jail sentences 7 dangerous situations 8 full of tension Passage3 1—5 ACBDC 6—7 DA 8 skills courses 9 certificates 10 world communication Passage4 1—5 NG Y N Y Y
6—7 Y N 8 it is easier 9 confront different challenges 10 allowing everything Unit3 Passage1 1—5 BCBAC 6—8 CAC Passage2 1 900 miles 2 weeks of time 3 the kind of boats 4 getting into the mud 5 different levels of water 6 man-made lakes 7 the force of the water 8 the photographys taken from spaceships Passage3 1—5 DBCAB 6—7 AD 8 the chain store 9 th e firm’s expenses Passage4 1—5 N NG N Y N
大学英语快速阅读课文ets带翻译课后习题答案ets
P e t s There are different ideas about pets in different parts of the world. In most cultures, animals have an inferior position to human beings. In most instances, however, people treat their pets like members of their families, or perhaps better. In the United States, and Europe, where pets are very popular, there are special shops that sell jewelry, clothing, and g o u r m e t(美味的) food for cats and dogs. There are shops on fashionable streets in New York City, for example, that sell gold and diamond collars, fur jackets, hats and mittens for pets. In many countries of the world, there is special food for pets. It is common for supermarkets in many places to sell cat food and dog food. However, in Nice, France, there is a special restaurant for dogs. Dogs are the only customers. There is seating for 20 of them. On the menu, there are varieties of special gourmet dishes for dogs to choose from. There is a sausage dish, a turkey dish, and a pasta dish, among others. For dessert, there is a variety of French cheeses and, of course, dog biscuits. In the U.S., there is a very rich cat who can afford to go to any restaurant he chooses. His name is Kitty Cat. Kitty Cat inherited 100,000 dollars when
2020年大学英语四级阅读理解试题及答案
As the pace of life continues to increase ,we are fast losing the art of relaxation. Once you are in the habit of rushing through lift,being on the go from morning till night, it is hard to slow down. But relaxation is essential for a healthy mind and body. Stress is an natural part of everyday lift and there is no way to avoid it. In fact ,it is not the bad thing it is often supposed to be .A certain amount of stress is vital to provide motivation adn give purpose to life. It is only when the stress gets out of control that it can lead to poor performance and ill health. The amount of stress a person can withstand depends very much on the individual. Some people are not afraid of stress,and such characters are obviously prime material for managerial responsibilities. Others lose heart at the first signs of unusual difficulties. When exposed to stress,in whatever form,we react both chemically and physically. In fact we make choice between "fight" or "flight" and in more primitive days the choice made the difference between life or death. The crises we meet today are unlikely to be so extreme,but however little the stress,it involves the same response. It is when such a reaction lasts long,through continued exposure to stress,that health becomes endangered.Such serious conditions as high blood pressure and heart disease have established links with stress.Since we cannot remove stress from our lives(it would be unwise to do so even if we could),we need to find ways to deal with it. 1.People are finding less and less time for relaxing themselves because_____. a.they do not know how to enjoy themselves b.they do not believe that relaxation is important for health c.they are travelling fast all the time d.they are becoming busier with their work 2.According to the writer ,the most important character for a good manager is his ________. a.not fearing stress b.knowing the art of relaxation c.high sense of responsibility d.having control over performance 3.Which of the follwing statements is ture? a.We can find some ways to avoid stress b.Stress is always harmful to people
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A MISTAKEN RAPTURE A little woman was killed after leaping through her moving car's sunroof during an incident best described as "a mistaken rapture" by dozens of eyewitnesses. 13 other people were injured after a 20-car
pile-up resulted from people trying to avoid hitting the woman who was apparently convinced that the rapture was occurring when she saw 12 people floating up into the air, and then passed a man on the side of the road who she claimed was Jesus.
"She started screaming, 'He's back, He's back' and climbed right out of the sunroof and jumped off the roof of the car," said Everet Williams, husband of 28-year-old Georgann Williams who was pronounced dead at the scene. "I was slowing down but she wouldn't wait till I stopped,"
大学英语四级阅读40篇(1)
大学英语四级阅读40篇(1) 2/40 The economy of the United states after 1952 was the econnomy of a well-fed,almost fully employed people. Despit occasional alarms, the country escaped any postwar depression and lived in a state of boom. A n economic survey of the year 1955, a typical year of the 1950’s, may be typical as illustrating the rapid economic growth of the decade. The national output was value at 10 percent above that of 1954 (1955 output was estimated at 392 billion dollars). The production of manufacturers was about 40 percent more than it had averaged in the years immediately following World War 2. The country’s business spent about 30billion dollars for new factories and machinery. National income available for spending was almost a third greater than it had been it had been in 1950. Consumers spent about 256 billion dollars; that is about 700 million dollars a day ,or about twenty-five million dollars every hour , all round the clock. Sixty-five million people held jobs and only a little more than two million wanted jobs but could not find them . Only agriculture
全新版大学英语快速阅读2翻译
第五单元 一个年轻的,盲目的电脑专家 有时,这被认为是消极的证明是一个资产的工作。虽然他只有18岁,盲目的,莱曼Gokyigit名列计算机技术人员和程序员在InteliData技术公司,一个大型软件公司与几家美国各地的办公室。 “在我们公司加上另一个去年10月,两个不同的计算机网络是我们的疯狂驾驶回忆说,“一个InteliData道格拉斯·布劳恩,副总统。“我们甚至不能互相发送电子。“在三个星期,奥Gokyigit,托莱多大学二年级在InteliData兼职的城市的公司,创建了软件需要合并两个网络。“没有一个公司的350名其他雇员可能做过这三个月的工作,”布劳恩先生说。“莱曼的确可以“看”到电脑的核心。” Gokyigit先生的礼物,布劳恩先生所说,是一个不寻常的能力,形成一个想法部的机器。“计算机允许我到这个世界,做任何我想做 的,”Gokyigit先生说,他是一位计算机科学与工程专业a。 像大多数盲目与计算机工作的人,Gokyigit先生使用一个语音合成器,是一种电子装置,可以大声朗读出来的视频显示在他的监视器在一个机械的声音。他完全取决于记忆。将合成器以最高速度,他记得几乎所有他听到,至少直到完成一个项目。而合成器会谈,奥Gokyigit精神“地图”电脑屏幕带编号的坐标(如三宽,两下)和记下每个图标的位置在网格上,所以他可以调用文件与他的鼠标。
年轻的程序员也在家里和硬件,部分原因是一个高度发达的触觉。Nowakowski米茨,一名办公室经理在InteliData记得,他轻松地断开连接和重新连接他们的计算机系统在去年移动。“通过感觉,莱曼能找到位置的连接器,别针和连接速度远远超过其他大多数人的景象,”她说。几个月前,在前往旧金山,布劳恩先生很难连接到公司的大型计算机使用他的笔记本电脑。他需要具体数字进入四InteliData文件。而不是问某人手动搜索一本厚厚的书的计算机地址,他称Gokyigit先生,他犯下的地址簿来记忆和产生适当的数据“在十秒”,布劳恩先生说。 大部分的学生程序员的速度来自他的能力忽略中断,计算机。当输入时,他仔细地听着合成器。他的又长又瘦的手指在键盘上飞行。“没有什么似乎动摇他的浓度,”Nowakowski太太说,他的老板。 Gokyigit先生是唯一的公司员工每天24小时可用。“我们认为他我们的首要问题解决者,”布劳恩先生说。 梦想成真 我们都有梦想。然而我们中很少有人满足他们。通常,一个梦想模一样迅速地出生,因为我们缺乏信心保持它。当我长大到足以理解生活的现实,我意识到社会上放一个高价值的青春、美丽和智慧成就。这个发现给了我一些想法发展我的梦想。 我知道美丽是我永远不会有。所以我没有梦想成为美丽的。但我不认为这是坏事,因为它迫使我集中精力去开发我的其他品质。人们看到的只
大学英语四级阅读理解汇总
大学英语四级2017年6月阅读理解汇总 17.6.1 The method for making beer has changed over time. Hops (啤酒花)，for example, which give many a modem beer its bitter flavor, are a (26)_______ recent addition to the beverage. This was first mentioned in reference to brewing in the ninth century. Now, researchers have found a (27)_______ingredient in residue (残留物）from 5,000-year-old beer brewing equipment. While digging two pits at a site in the central plains of China, scientists discovered fragments from pots and vessels. The different shapes of the containers (28)_______ they were used to brew, filter, and store beer. They may be ancient “beer-making tools,”and the earliest (29_______ evidence of beer brewing in China, the researchers reported in the Proceedings of the National Academy of Sciences. To (30)_______ that theory, the team examined the yellowish, dried (31)_______ inside the vessels. The majority of the grains, about 80%, were from cereal crops like barley (大麦),and about 10% were bits of roots, (32)_______lily,which would have made the beer sweeter, the scientists
全新版大学英语快速阅读1翻译unit1概要
Unit 1 Johnny the Explorer 约翰尼探险家 Johnny was three when he ran away from home for the first time. Somebody left the garden gate open. Johnny wandered out, crossed some fields, and two hours later, arrived in the next village. He was just able to give his name and address. 当约翰尼第一次离家出走时,他只有 3岁。有些人的花园门口敞开着。约翰尼越过这些地段就漫步出去了,接着 2个小时后,他到了下一个村子。他只能说出他的名字和地址。 By the time he was seven, Johnny used to vanish from home two to three times a year. Sometimes he covered quite long distances on foot. On other occasions he got on a bus or even a train, and simply sat there until someone asked for his ticket. Generally the police brought him home. "Why do you do it?" they used to ask. "You aren't unhappy at home, are you? .... " "Of course not," Johnny replied. "Then why?" "I just like seeing places," Johnny told them. 等到他 7岁的以后,约翰尼经常离家出走,一年内有两到三次。有时他步行到很远的地方。其他时候,他通常坐公共汽车或甚至坐火车外出,并朴素地坐在里面直到有人来买票。通常警察来带他回家。“为什么你要离家出走?” 警察们问他,“你在家里是幸福的,不是吗? .... ”“当然不是不幸福,”约翰尼回答道。“那是为什么呢?”“我只是喜欢外出探险, ”约翰尼告诉他们。 Johnny continued to "see places" although everyone tried to stop him. His parents used to watch him closely, and so did his teachers; but sooner or later Johnny managed to slip away. As he grew older, his favorite trick was to hide on a long distance truck. Sometimes he used to travel hundreds of miles before anyone discovered him.
大学英语四级阅读理解试题40篇(含答案)
大学英语四级阅读理解试题40篇之一（含答案） There are three kinds of goals: short-term,medium-range and long-term goals. Short-range goals are those that usually deal with current activities,which we can apply on a daily basis.Such goals can be achieved in a week or less,or two weeks,or possible months.It should be remembered that just as a building is no stronger than its foundation ,out long-term goals cannot amount to very munch without the achievement of solid short-term goals.Upon completing our short-term goals,we should date the occasion and then add new short-term goals that will build on those that have been completed. The intermediate goals bukld on the foundation of the short-range goals.They might deal with just one term of school or the entire school year,or they could even extend for several years.Any time you move a step at a time,you should never allow yourself to become discouraged or overwhelmed. As you complete each step,you will enforce the belief in your ability to grow adn succeed.And as your list of completion dates grow,your motivation and desire will increase. Long-range goals may be related to our dreams of the future. They might cover five years or more. Life is not a static thing.We should never allow a long-term goal to limit us or our course of action. 1.Our long-term goals mean a lot______. A.if we complete our short-range goals B.if we cannot reach solid short-term goals C.if we write down the dates D.if we put forward some plans 2.New short-term goals are bulid upon______. A.two years B.long-term goals C.current activities D.the goals that have been completed 3.When we complete each step of our goals ,______. A.we will win final success B.we are overwhelmed C.we should build up confidence of success D.we should strong desire for setting new goals 4.Once our goals are drawn up,_______. A.we should stick to them until we complete them B.we may change our goals as we have new ideas and opportunities C.we had better wait for the exciting news of success D.we have made great decision 5.It is implied but not stated in the passage that ______. A.those who habe long-term goals will succeed B.writing down the dates may discourage you C.the goal is only a guide for us to reach our desination D.every should have a goal 答案：adcbc 大学英语四级阅读理解试题40篇之二（含答案） The economy of the United states after 1952 was the econnomy of a well-fed,almost fully employed people. Despit occasional alarms, the country escaped any postwar depression and lived in a state of boom. A n economic survey of the year 1955, a typical year of the 1950’s, may be
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Wildlife Conservation In my children's lifetimes, I believe gorillas, chimpanzees and orangutans ( 猩猩) will all become extinct in the wild. So the question we have to ask ourselves is this: do we
want our children to see only in zoos what used to exist in the real world? It is the great apes that will disappear first, because there are so few of them left, and because they're so vulnerable to changes in their habitats.
Many of the threats to these animals result from a global economy and not local pressures. The threat to the orangutans in Indonesia, for example, is largely a result of deforestation and the risks to apes and chimpanzees in Africa result from the timber
trade and the demand for bush-meat. The two work together: logging opens up the forest, which means that the bush-meat can be got out fast, to Kinshasa or to London. If we want to avoid the disaster, people in developed
全新版大学英语第三册快速阅读翻译
Unit 1 textA-1 Why I Love the City 我的许多朋友都离开了这座城市。它们是在郊区买房子,因为他们想要远离城市的喧嚣、烟雾、交通、和犯罪的城市。一个朋友说,“有太多的空气污染的城市。我更喜欢郊区,那里的空气是那么清新。“另一个朋友抱怨交通:“有太多的汽车市区!你不能找到一个停车的地方,交通堵塞的情况都很可怕。“每个人都在抱怨关于犯罪:“城市有许多罪犯。我很少离开我的房子”的幻影却如太危险了。 在我朋友搬离城市,他们通常会背诵优势郊区生活:绿草、花卉、游泳池、烤肉等等。然而在我的朋友们在那里住了一年左右的时间里,他们意识到郊区生活就不那么愉快,因为他们期待。这种变化的原因是什么?他们的花园!他们很快了解到,一个不可避免的一部分yardwork郊区生活。他们整个周末都在工作在他们的花园,它们是非常累的一把,又要取他们的水池游泳甚至做一些肉放在他们的烤肉。又有另一个投诉:他们不能住在郊区没有一辆车。我的大多数朋友都搬到郊区,避开塞车,但现在他们不得不上班市中心。他们坐在一个繁忙的公路每天两个小时我的意见是非常不同的城市生活,从我朋友的我住在市区吗?和我爱它! ! !为什么?嗯,首先,我喜欢nature-flowers、绿草、树木和动物。在这个城市里,我有一切优势自然:我可以步行通过公共公园,闻闻花香,坐在草地上在树下。我可以参观,动物园里的动物。然而到目前为止我还没有一个缺点:我不需要做yardwork或喂动物。同时,在这个城市,到处都可以让我乘公共汽车吗?如果有交通堵塞,我可以走回去。 似乎每个人都搬到郊区,避免罪恶的大城市。我有一个理论的城市犯罪的,然而,所以我觉得安全的市中心。罪犯将反映在社会生活的变化:如果人们买了房子在郊区,罪犯将步其后尘。罪犯想避免噪音、烟雾、污染了。不久,过于拥挤和犯罪的问题,而不是城市郊区! testA-2 People on the Move 美国人的历史,在某种程度上,历史运动的美国人民。他们移到东海岸的殖民地到开放空间的西部。从乡下搬,农场到城里去。最近,美国人一直不断地由城市郊区。 开放空间;西部地区迁移 美国人开始先驱移动,从东海岸到西250年前。他们向西边移居的原因有许多种。一个理由是无限的开放空间的可用性和土地耕作。美国人喜欢大的开放空间,他们也喜欢独立和自由发展的土地以他们自己的方式。一些土地变得农场。重要的矿产资源被发现在某些地区,因此有一些那地就都归了地雷。其他大型地区成为牛牧场。似乎对每个人都有足够的土地。但这是一个困难的生活——一种无止境的工作和困难。 城市 1860年以后,工业革命改变了美国。美国人学会了如何生产的钢铁。他们开始生产石油。汽车被发明了。工厂各类开始出现,而在城市开始长大了工厂周围。农民和其他的国家里,人们搬到越来越多的城市人为了寻找工作,更容易的生活。在1900年代早期,城市工作忙、令人激动的地方。然而,也有很多贫穷和困苦。 城市增长的城市建筑taller-and不必得到增长out-they展开的中心。私有房屋和门廊与码就消失了。公寓,每一个个子比下、就住在他们的地方。越来越多的人搬到城市,越来越大,城市。 一些城市不能分散因为没有房间这么做。这些城市,纽约就是一个最好的例子,变得越来越拥挤。更多的人意味着更多的汽车、卡车、公交车、更大的噪音,更多的污染,以及更多的犯罪。许
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大学英语四级阅读理解试题及答案（四）十六 Trees should only be pruned when there is a good and clear reason for doing so and , fortunately,the number of such reasons is small. Pruning involves the cutting away of obergrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way. First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseaed or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air. One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but itis a wound that will heal. Often there is a race between the healing and the desease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurs and then paint it with one of the substances available from garden shops produced especially for this purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts yu make will bleed. If this does happen,it is, of course,impossible to paint them properly. 1.Pruning should be done to ______. a.make the tree grow taller