英语科普短文阅读训练
Ⅰ 科普类英文阅读理解题一篇
(09•上海C篇)
“Get your hands off me, I have been stolen,” the laptop, a portable computer, shouted. That is a new solution to laptop computer theft: a program that lets owners give their property a voice when it has been taken.
The program allows users to display alerts on the missing computer’s screen and even to set a spoken message. Tracking software for stolen laptops has been on the market for some time, but this is thought to be the first that allows owners to give the thief a piece of their mind.
Owners must report their laptop missing by visiting a website, which sends a message to the model: a red and yellow “lost or stolen” sign appears on its screen when it is started. Under the latest version（版本）of the software, users can also send a spoken message.
The message can be set to reappear every 30 seconds, no matter how many times the thief closes it.” One customer sent a message saying,’ You are being tracked. I am right at your door’,” said Carrie Hafeman, chief executive of the company which proces the program, Retriever.
In the latest version, people can add a spoken message. For example, the laptop’s speakers will say: “Help, this laptop is reported lost or stolen. If you are not my owner, report me now.”
The Retriever software package, which costs $29.95 but has a free trial period, has the functions of many security software programs .Owners can remotely switch to an alternative password if they fear that the thief has also got hold of the access details.
If a thief accesses the internet with the stolen laptop, Retriever will collect information on the internet service provider in use, so that the police can be alerted to its location.
Thousands of laptops are stolen every year form homes and offices, but with the use of laptops increasing, the number stolen while their owners are out and about has been rising sharply.
Other security software allows users to erase data remotely or lock down the computer.
72. The expression “to give the thief a piece of their mind “can be understood as “_______”
A. to give the thief an alert mind
B. to express the owners’ anger to the thief
C. to remind the thief of this conscience
D. to make the thief give up his mind
73. Different from other security software, Retriever can .
A. record the stealing process B. help recognize the lost laptop
C. lock down the computer remotely D. send a spoken message
74. One function of the program is that it allows the owner to at a distance.
A. change some access details for switching on the laptop
B. turn on the laptop by using the original password
C. operate the laptop by means of and alternative password
D. erase the information kept in the stolen laptop
75. Which of the following can best summarize the main idea of the passage?
A. With no Retriever, thousands of laptops are stolen every year.
B. A new soft ware provides a means to rece laptop theft.
C. Retriever has helped to find thieves and lost computers.
D. A new program offers a communication platform with the thief.
答案 72.B 73.D 74.A 75.B
Ⅱ 医学英语科普文章
身体健康是从物质意义对人的生活质量的理解。下面是我带来的 医学英语 科普 文章 ，欢颂慧羡迎阅读!
医学英语科普文章1
话说水果、蔬菜和野拍疾病
Five-a-Day "No Benefit" 每日五份没效果
碧裂One of the most commonly-held beliefs regarding health and nutrition in the UK has beenfound to be untrue, according to a new scientific study.
For many years British people have been recommended to eat at least 'five-a-day' – that isfive items of fruit or vegetables every day in order to improve their health and rece thelikelihood of illness, in particular cancer.
The recommendation was first put forward in 1990 by the World Health Organizationwhich said that the 'five-a-day' diet could prevent cancer and other chronic diseases.
Since then the advice has been a mainstay of public health policies in many developedcountries, such as the UK, where the population eat a high proportion of junk food.
Many health campaigns have promoted the advice, and indeed much food packaging inBritain states how the contents will constitute part of your five-a-day.
However, a study of 500,000 Europeans from 10 different countries refutes the commonly-believed suggestion that up to 50% of cancers could be prevented by increasing the public'sconsumption of fruit and vegetables.
Instead the study, which is led by researchers from a well-respected New York medicalschool, estimates that only 2.5% of cancers could be averted by eating more fruit and veg.
It seems that the key to avoiding cancers is to have an overall healthy lifestyle whichincludes not smoking or drinking a lot of alcohol, taking exercise and avoiding obesity.
But medical charities have spoken out to remind people that diet is an important factor instaying healthy, and that even a 2.5% rection in cancers is still a positive step.
Cancer Research UK said: "It's still a good idea to eat your five-a-day but remember thatfruits and vegetables are pieces in a much larger lifestyle jigsaw."
医学英语科普文章2
致命的军团杆菌
legionnaires' disease is a serious and sometimes fatal form of pneumonia. legionnaires' disease is caused by infection with legionella bacteria which are found naturally in the environment and thrive in warm water and warm damp places. man-made water systems sometimes provide environments that let legionella bacteria increase to large numbers. these man-made systems include showers, spa pools, fountains, and air conditioning cooling towers. people usually get legionnaires' disease by breathing in mists that come from a water source contaminated with legionella bacteria.
an estimated 8,000 to 18,000 people get legionnaires' disease in the united states each year. some people can be infected with legionella bacteria and have mild symptoms or no illness at all. patients with legionnaires' disease usually have fever, chills, and a cough, which may be dry or may proce sputum. some patients also have muscle aches, headache, tiredness, loss of appetite, and, occasionally, diarrhea. from the time of infection with legionella bacteria, it takes 2-10 days for symptoms to appear. in most cases, symptoms begin after 5-6 days. legionnaires' disease is treated with antibiotics, such as erythromycin. the earlier that treatment is begun, the better the outcome.
the first known outbreak of legionnaires' disease was in philadelphia, usa, in 1976. a total of 221 people contracted the disease and 34 died. most of those that died were legionnaires and that's how the disease got its name. the second largest outbreak was at the stafford hospital in england in 1985; a total of 101 people contracted the disease and 28 died.
军团病是一种非常严重的、有时可以致命的肺炎。军团病是由军团杆菌引起，这种细菌产生在自然环境中，在温水里及潮热的地方蔓延。人工供水系统有时也能为军团杆菌的大量繁殖提供生存环境。这些系统包括淋浴器、矿泉池、喷泉以及空调设备的冷却水塔。人们通常是由于呼吸了被军团杆菌污染的水源散发的水雾而传染上军团病的。
据估计，在美国每年都有国每年都有8000~18000人感染上军团病。有些军团病感染者所表现出来的症状比较温和，甚至根本就没有得病的迹象。军团病患者通常有发烧、畏寒及干咳或咳痰等表现。部分患者还有肌肉疼痛、头痛、疲劳、食欲不振及偶尔腹泻等症状。这种病的潜伏期约为的潜天。许多病例表明，出现症状需要状需要5~6天的时间。军团病可以用红霉素等抗生素进行治疗，越早治疗效果越好。
军团病已知的首次爆发是在发是1976年美国费城，221人感染疾病，其中死亡34人。由于大多的死者都是军团成员，因此称为军团病。该病的第二次大爆发是1985年在英国的斯塔福德医院。这次101个被感染者中有28人死亡。
医学英语科普文章3
女性最佳生育年龄
For women who want to have children, planning the right time is a difficult decision. In recent years, many women have opted to put off having kids until their late 20s and well into their 30s — focusing on finishing school, building their careers, traveling, and maybe even paying down their student loans before taking the leap into parenthood. Statistics show that women are waiting longer and longer to have kids — the current average age of first-time moms is up to 26.3, up from 24.9 just 15 years ago.
对于想要孩子的女性来说，合适的时间是一个艰难的决定。近年来，很多女性选择在20岁末甚至30多岁才要孩子，主要原因是她们忙于完成学业、发展职业生涯、旅行、甚至选择在为人父母之前偿还助学贷款。数据表明，女性的生育年龄越来越晚——生第一胎的平均年龄从15年前的24.9岁上升到现在的是26.3岁。
The choice to have children is extremely personal and of course there’s no wrong answer when it comes to being ready to be a mom. But according to Dr. Gillian Lockwood, medical director at the Midland Fertility Clinic in the UK, there is an ideal age when our bodies are best suited to pregnancy. Can you guess what it is?
要孩子的选择是一个非常私人的话题，选择什么时候做母亲都没有错。但是英国米德兰生育诊所的医学主任Gillian Lockwood表示，我们的身体有一个最佳的生育年龄。你能猜到是多少岁吗?
I’ll give you a hint: it’s when many of us have a quarter-life crisis. Also: when it finally becomes affordable to rent a car.
提醒一下：最佳的生育年龄是在大多数人的“青年危机”时，也是我们终于能租得起车的时候。
Yep. According to Lockwood, the ideal age to get pregnant is 25.
Lockwood表示，是的，最佳的生育年龄是25岁。
Unfortunately, says Dr. Lockwood, it’s also the age when motherhood is low on many women’s list of priorities. She explained in the Evening Standard:
Lockwood医生说，不幸的是，对很多25岁的女性来说，成为母亲并不在她们的优先任务清单上面。Lockwood医生在《伦敦标准晚报》上解释说：
“Age 25 is exactly the time when today’s young women have left university, are trying to get off on a good career, trying to pay back their student loans, trying to find someone who wants to have babies with them and trying to get on the housing ladder.”
“25岁的当代年轻女性刚刚大学 毕业 ，事业起步，忙于偿还助学贷款，找男朋友，努力买房。”
Dr. Lockwood also had some harsh words about fertility treatments being marketed as a viable option to women over 40. “The bleak reality is that the chance of IVF working with your own eggs once you are 40 is absolutely abysmal,” she said. “Would we let, yet alone encourage, patients to pay for an elective operation with a less than five percent chance of working?” While that may be Dr. Lockwood’s opinion, plenty of wannabe parents may be happy to take those chances.
Lockwood医生还批判了向40多岁女性推销不孕疗法的行为。“事实很残酷，如果你超过了40岁，用卵子进行体外受精的成功几率非常低，”她说。“谁会允许甚至鼓励病人做成功几率低于5%的择期手术?”这是Lockwood医生的观点，但仍有很多想要孩子的父母很愿意抓住这些机会。
It’s worth reiterating that there are so many factors that inform the choice to have kids and only you can decide when — and IF — you want to become a mother. Whether you choose to have kids at 20, 30, 40, or beyond; biologically, through a surrogate, or via adoption, always listen to your own body and make the decision that makes sense for your own life. You know what’s right for you.
特别强调的是，很多因素会影响要孩子的时间，只有你自己可以决定是否想成为一位母亲。不管你是在20岁、30岁、40岁甚至更大的年龄要孩子，是自己生、代孕还是收养，你都要听从自己的身体，做出对生活有意义的选择。你知道什么是最适合自己的。
Ⅲ 英文科普短文
The Internet is a giant network of computers located all over the world that communicate with each other. The Internet is an international collection of computer networks` that all understand a standard system of addresses and commands, connected together through backbone systems. It was started in 1969, when the U.S. Department of Defence established a nationwide network to connect a handful of universities and contractors. The original idea was to increase computing capacity that could be shared by users in many locations and to find out what it would take for computer networks to survive a nuclear war or other disaster by providing multiple path between users. People on the ARPNET (as this nationwide network was originally called) quickly discovered that they could exchange messages and conct electronic "conferences" with distant colleagues for purposes that had nothing to do with the military instrial complex. If somebody else had something interesting stored on their computer, it was a simple matter to obtain a (assuming the owner did not protect it). Over the years, additional networks joined which added access to more and more computers. The first international connections, to Norway and England, were added in 1973. Today thousands of networks and millions of computers are connected to the Internet. It is growing so quickly that nobody can say exactly how many users "On the Net". The Internet is the largest repository of information which can provide very very large network [参考译文] Internet是由位于世界各地相互通信的计算机连接而成的巨大的计算机网络。 Internet是计算机网络的国际性的集合，这些网络都符合具有地址和命令的标准体系，并经骨干网连在一起。Internet始建于1969年，当时美国国防部为连接少数几所大学和协议企业而建立了一个全国性网络。最初的想法是要增加计算机能力并可由许多地点的用户共享，并且通过提供用户间多条路径来找到哪一种计算机网络能够在核战或其他灾难中幸存。ARPNET（这种全国网络最初的名称）上的用户很快就发现他们可以与远距离的同事交换消息，并且进行某种目的的电子“会议”，而这些目的与军事工业企业没有任何关系。如果另外一些人在其计算机中存有有趣的东西，得到其拷贝是很容易的事（假定拥有者没有进行保护）。 几年间，新的网络接入使越来越多的计算机加入进来。在1973年进行了第一次与挪威和英国的国际连接。今天，有成千上万的计算机网络和数百万台计算机与Internet相连。Internet发展如此之快以至于没有人能准确地说出网上有多少用户。 Internet是最大的信息宝库，它可以提供非常巨大的网络资源。这种网络资源可分为网络设备资源和网络信息资源。网络设备资源使我们能够进行远程计算和通信。网络信息资源向我们提供各种各样的信息服务，如科学、教育、商务、历史、法律、艺术和娱乐等等。
Ⅳ 求一篇一百字左右的英语科普文，越简单越好，是科普类型就好，初中、小学水平都可以，及翻译
PUBLIC ATTITUDES TOWARD SCIENCE
Anyway, even if one wanted to, one couldn't put the clock back to an earlier age. Knowledge and techniques can't just be forgotten. Nor can one prevent further advances in the future. Even if all government money for research were cut off (and the present government is doing its best), the force of competition would still bring about advances in technology. Moreover, one cannot stop inquiring minds from thinking about basic science, whether or not they are paid for it. The only way to prevent further developments would be a global state that suppressed anything new, and human initiative and inventiveness are such that even this wouldn't succeed. All it would do is slow down the rate of change.
Ⅳ 求5篇200字的英语阅读小短文,(小学六年级的,科普版英语教材)！
First, English is a world language. It is said that you can communicate everywhere if you know English. Second, China is opposed to the opportunity to develop is economy worldwide.It is essential to know other countries' economic and cultural background. English is the key to the success. Third, more and more foreigners are interested in Chinese literature and culture. Mastering the English, we can better promote our heritage and let more people understand and like China. 摘自《 苏教版小学六年级金卷》
Ⅵ 英语科普类文章
科普 教育 对我国小康社会、和谐社会的建设有着重要的意义。下面是我带来的英语科普类 文章 ，欢迎阅读!
英语科普类文章1
听点小音乐 轻松学分数
Stuck on a tricky math problem? Start clapping. Grade school kids who learned about fractions through a rhythm-and-music-based curriculum outperformed their peers in traditional math classes. The work is inEcational Studies in Mathematics.
被一条数学题难住了?拍拍手试试吧。研究表明，小学生在有节奏感的音乐背景下学习分数知识的效果会好于传统课堂(具体研究发表在《数学教育研究》上的《学术性音乐：如何用音乐辅助三年级小学生学习基础分数》一文，作者：苏珊·科瑞等)。
Fractions let you divide up a measure of music into notes of varying length. For example, one four-beat measure could contain a single whole note held for all four beats, two half notes of two beats apiece, four quarter notes of a beat each, and so on. In the Academic Music program, based on the Kodaly method of musical ecation, students clap, drum and chant to memorize the lengths of musical notes—then solve problems in which fractional notes must add up to a full measure of music.
根据分数的概念，一节音乐可分成长短不一的几串音符。例如，一节四拍子的调子可包含一个代表四拍子的全音符，两个各代表一个二拍子的二分音符，四个各代表一个一拍子的四分音符……以此类推。在“学术性音乐”项目中，研究人员以科达伊的音乐教育 方法 为基础，让学生通过打拍子、敲鼓、合唱记住各音符的长度，学生必须把这些片段加起来，才能得到一节完整的音乐——如此实践可解决学生对分数的疑惑。
Sixty-seven students participated in the study. Half did math problems using the Academic Music system. And after six weeks, the students in the music program averaged 50 percent higher on tests than did the kids in regular math class. Fractions create a solid foundation for further math ecation—so mastering them is music to ecators' ears.
有67名学生作为实验对象参与了本次研究，其中有一半在“学术性音乐”体系下解决数学问题。六周后，他们在测试中的得分要比普通班级中的学生平均高50%。分数是进一步进行数学知识教学的基础——如此看来，这还多亏了教育者的耳朵。
英语科普类文章3
十万年前的颜料工作室
Archeologists have discovered a paint proction studio in an ancient South African cave A new archaeological find may signify one of the great leaps in human cultural and cognitive history. Because researchers have discovered a 100,000-year-old art studio. It was known that ochre—rock with red or yellow pigments—was used for paint even that far back in history. But there was scant evidence for how it was prepared and handled. Then, in 2008, researchers uncovered an ochre mixing kit in a South African cave. They found two abalone shells, most likely used for paint mixing and storage. They also found ochre, bone, charcoal, grindstones and hammerstones. The researchers say the ochre was probably rubbed on quartzite slabs to create a fine powder. It was then mixed and heated with other crushed substances, including other stones or mammal-bone. Microscopic striations on the inner abalone surface likely are likely scrape marks left ring paint mixing. The research was published in the journal Science. The paint may have been used for body adornment or for long-gone artwork. And the presence of this paint-proction laboratory indicates that the early humans knew basic chemistry and could plan for the future.
考古学家在南非的一个古老洞穴中发现了一个油漆制作工作室。这个新的考古发现可能是人类 文化 和认知历史的最伟大的跨越之一。因为研究人员发现的这个工作室产生于十万年前。众所周知，拥有红色或黄色色素的赭石岩一直被广泛运用于绘画中，但却少有证据显示它是如何制作并运用的。2008年，研究人员 在南非的山洞中发现了赭石混合工具， 两个可能用于调漆和储存的鲍鱼壳，除此之外他们还发现了赭石，骨头，炭笔和石锤。研究人员称，这些赭石很有可能经过在石英岩板上仔细研磨后，得到上等的粉末，然后再与 其他石头或者是哺乳动物的粉末混合并加热。用显微镜观察鲍鱼壳的内表面，你可以发现一些刮痕，这些都有可能是在混合颜料的过程中留下来的。这个发现已经被刊登在科学期刊上。这些颜料可能一直被运用在人体 彩绘 和长久失传的艺术品上。而且这些颜料制作工作室的存在表明了早期人类对化学已有了基本的了解并具有了规划未来的能力。颜料工具的一小步，人类历史的一大步——辛西亚莫。
英语科普类文章3
你知道发烧的妙处吗?
Fever can play a variety of roles, such as inhibiting pathogen replication. It also apparently increases the population of killer T cells of the immune system. Christopher Intagliata reports.
发烧有多种不同的作用，如抑制病菌复制。它还可以显著增加免疫系统中杀伤性T细胞的数量。
I've always thought that when I get a fever, it's my body trying to make things uncomfortable for the invading pathogen. And that's often true—higher temperatures can inhibit the bad guys' ability to replicate. But my fever may actually be a one-two-punch. In addition to slowing down the invader, the heat helps the immune system recruit more troops for a counter-attack. That finding appears in the Journal of Leukocyte Biology.
我很早就知道，发烧的时候，其实是我的身体正在对入侵的病原体做出抵抗。这是事实---高温可以抑制坏病菌复制的能力。但发烧更是一个组合打击。除了减缓病原体的入侵，高温可以帮助免疫系统召集更多的部队做出抵抗。这一研究发表在《白细胞生物学杂志》。
Researchers warmed up one group of mice to body temperatures of about 103 degrees Fahrenheit. They left another group at normal core temperature—about the same as ours. Then they injected both groups of mice with an antigen, a substance that attracts the attention of the immune system.
研究人员将一组老鼠的体温升高到103华氏度，另外一组保持正常体温---大约是人体温度。然后向这两组老鼠的体内注射抗原——一种会引起免疫系统反应的物质。
Blood samples taken three days later revealed that the feverish mice had nearly twice as many killer T-cells: the kind of immune cells that can hunt down infected cells or tumor cells, and slaughter them.
三天后，这两组老鼠的血样表明，体温较高老鼠组体内的杀伤性T细胞是正常组的2倍，这种免疫细胞可以追踪感染细胞或癌细胞，并将其消灭。
So when you're sick and you get the chills, the authors say, your body may be trying to tell you to hop under some blankets. Lie down, warm up and send a message. The heat is on.
所以，当你生病或感到寒冷时，表示你的身体正直向你传达信息--裹条毯子。躺在床上吧，热起来，身体自会做出反应。热度来袭啊。
Ⅶ 英语科普类文章有哪些
1、To Pull up the Seedlings to Help Them Grow “拔苗助长”
Once upon a time, there was an old farmer who planted a plot of rice. After he planted the seedlings, every day he went to the field to watch the seedlings grow. He saw the young shoots break through the soil and grow taller each day, but still, he thought they were growing too slowly. Eventually he got impatient with the young plants and suddenly he hit upon an idea that one by one, he pulled up the young plants by half an inch. The next early morning, the young man couldn’t wait to check his “achievement”, but he was heart-broken to see all the pulled-up young plants dying.
从前，有个农夫，种了稻苗(seedlings)后，便希望能早早收成。每天他到稻田时，都发觉那些稻苗长得非常慢。他等得很不耐烦。想了又想，他终于想到一个“最佳方法”，他将稻苗全都拔高了几分。第二天，一早起身，他迫不及待地去稻田看他的“成果”。 哪知，却看到所有的稻苗都枯萎了。
2、Plugging One’s Ears While Stealing a Bell “掩耳盗铃”
Once upon a time, there was a man who wanted to steal his neighbor’s doorbell. However, he knew clearly that the bell would ring and catch the other people’s attention as long as he touched the bell. So he thought hard and suddenly hit on a clever “idea”. He plugged his ears with something, thinking that everything would go well when he stole the bell. Unfortunately to his disappointment, the bell still rang loudly and he was caught on the spot as a thief.
从前，有一个人想偷邻居门上的铃，但是他知道一碰到铃，铃就会响起来，被人发现。他想啊想，终于他想出一个“妙极”，他把自己的耳朵用东西塞起来，就听不见铃声了。但是当他去偷铃时，铃声仍旧响起来，他被别人当场抓住。
3、The Fox and the Crow “狐狸和乌鸦”
One day a crow stood on a branch near his nest and felt very happy with the meat in his mouth. At that time, a fox saw the crow with the meat, so he swallowed and eagerly thought of a plan to get the meat. However, whatever the fox said to the crow, the crow just kept silent. Until the fox thought highly of the crow’s beautiful voice, the crow felt flattered and opened his mouth to sing. As soon as the meat fell down to the ground, the fox took the meat and went into his hole.
有一天,一只乌鸦站在窝旁的树枝上嘴里叼着一片肉，心里非常高兴。这时候，一只狐狸看见了乌鸦，馋得直流口水，非常想得到那片肉。但是，无论狐狸说什么，乌鸦就是不理睬狐狸。最后，狐狸赞美乌鸦的嗓音最优美，并要求乌鸦唱几句让他欣赏欣赏。乌鸦听了狐狸赞美的话，得意极了，就唱起歌来。没想到，肉一掉下来，狐狸就叼起肉，钻回了洞。
Ⅷ 英语阅读训练方法
英语阅读训练方法
阅读理解能力是衡量外语水平的重要标志之一，对绝大多数学生来说，阅读理解，也是他们将来直接运用外语能力的一个最重要的方面。下面是我整理的关于英语阅读理解的训练的方法，欢迎大家阅读了解!
一、阅读理解的目的
近年来，短文阅读理解是分值最高的一道大题，为什么这种题的分值这么高?其训练的目的又是什么呢?通过十年的教学体会，我们总结归纳为以下两点：
1.提高学生对书面外语的阅读能力：即懂得按照不同的阅读目的，采用不同的阅读方法，进而提高阅读的速度。
2.提高学生对书面外语的理解能力：即获取具体信息的能力，对阅读材料进行分析、推理与判断的能力以及对阅读内容进行评价的能力。分析、推理与判断的能力以及对阅读内容进行评价的能力。
阅读的目的是理解，阅读能力直接为理解服务。理解能力是阅读能力的演化。这就是阅读与理解的辨证关系。在实际教学中教师应处理好这一关系。
二、阅读理解考查的重点
阅读理解题，有议论文、记叙文、说明文、应用文、对话等等，涉及社会教育、风俗文化、史地知识、科技、政治、经济、日常生活、传记、人物等诸多方面。这种试题题型一般包括一些信息题、是非题和推理、演算题等等。其测试的重点不外乎有以下几点：
1.字面理解试题(literal comprehension)
这是一种最简单的试题，其特点是答案明确具体，一般从阅读材料中可以直接找到答案。如辨认文章中事件发生的时间、顺序，人物的外貌、特征，它们与事件的因果关系。
2.推断理解试题(inferential comprehension)
这种题要求学生根据文章结构，掌握所读材料的主旨、大意以及说明主旨和大意的事实和细节。既要理解具体的事实，也要理解抽象的概念;既要理解字面意思，也要理解深层含义，或弦外之音，分析作者提出的观点、态度，进而从字里行间推测作者没有说明的意图、含蓄的内容，从中悟出作者的目的。
3.综合评价试题(evaluation)
这是阅读理解中最高的一个层次。它要求学生能凭着他们应有的常识、价值观，充分运用阅读材料以及自己的阅读经验对阅读内容做出自己的分析与评价。
三、阅读理解的答题方法及步骤
阅读理解不存在语法问题。答题时只能根据文章意思进行判断。在一般情况下，阅读理解题可以采用以下两种方法：
(1)先通读全文再答题。
(2)先看题目及四个选项再读全文。
无论我们采用那种方法，在阅读中，要善于抓住文章的关键词或句。千万不要纠缠文章中的某些细节而影响掌握全文大意。要紧紧围绕五个Wh-questions，即when, where, what, who, how来解决某些特定的问题，迅速地查找需要了解的信息。因此，做题时我们一般应采取的步骤是：
(1)认真仔细地阅读文章，掌握文章的中心思想、主要内容以及与之有关的细节。
(2)对文章后的题目，要逐项进行分析比较，排除非正确项，从文章的本意中寻找答案，要忠实于原文，而不是以自己的主观想象为根据，想当然地进行判断、选择。
(3)确定你所选的正确答案的内容能落实到文章中的某一个或几个具体的句子。也可以利用排除法(否定法)，最后确定一个正确答案。
(4)在做科普、史地知识短文(客观真理性文章)时，可以联系平时学到的知识进行选择判断。这也是阅读理解能力测试的主要要求。
四、阅读中存在的问题
学生在阅读时主要存在以下几方面的问题：
1.逐字逐句地阅读。用手指着单词一字一字，一行一行地读。这既减慢了阅读的速度，又会使你不能准确地理解全文而只停留在某个单词、短语或句子上，使你所获得的信息支离破碎，最终导致理解上的偏差。
2.左右摆头。
3.小声朗读或在心里默读。
4.过分重视细节，忽略对文章整体理解。即人们所说的"只见树木，不见森林"。
5.缺乏自信，过分依赖字典。
五、如何培养和提高学生的阅读理解能力
我们知道了阅读理解的目的、考查的重点、答题的`方法及步骤，也了解了我们存在的问题，那么在今后的教学过程中我们应该如何注意培养和提高学生们的阅读理解能力呢?
1.选择阅读方法。教师要注意教会学生按照题目的要求及目的选择使用不同的阅读方法。
(1)详读(seanning)：通过详读能寻找到某种具体的资料和信息，并对材料从表层到深层进行层层理解。
(2)阅读(skimming)：其目的只是为了获取、知道文章的内容大意，例如，simple stories for enjoyment, news, letters from friends, news from the local paper.因为这些内容对你的阅读理解文章无大妨碍，而且简单，清晰明了，故只需略读即可。
2.要树立自信心。不要一遇到生词就退缩，就查字典，要学会充分利用上下文，上下句来推断出该词的意思。也可以利用构词法(合成、转化和派生)来猜测。请看下面例子：
All through the night Lincoln fought with death. At 7:22 in the morning it was all over. The great man was at peace with world.划线这个短语同学们可能没见过，但是沿着事态发展的逻辑推理，自然会得出是"与世长辞"这一结论。
3.抓住核心词。上面的做法可以帮助我们扫除生词的障碍，在理解过程中起了一个"桥梁"的作用，这是非常重要的。因此，我们还要学会抓住核心词。要知道人们在表达思想的过程中，由于修辞学上或其他方面的需要，往往使用了一些作用不大的修饰词语。因此，要想准确、明了地理解文章，我们则要把着眼点放在核心词上，放在理解句子内部结构的关系上。
Would you like to do some shopping together with me? If you are free, please ring me back to t ell me about it.从上面这个句子不难看出划线部分就是这段话的核心词。
4.抓住主题句。在多数文章中，开篇的首句或前几句就揭示了文章的主题，而每一段的首句或未句就为该段的主题句或核心句。这样的例子在教材中还有很多，有经验的教师在教学中都是能教会学生这一本领的。
5.适当进行强化训练。学生每英语课外，绝少有机会接触和使用英语。尤其是理科的学生，他们又不十分重视英语这一学科的学习。因此有必要进行强化练习。我们的做法是："每天五分钟，天天跟我学。"我们利用每天上课的前5分钟对学生进行阅读强化训练。每次一篇，后附几个问题，做完后统一给出正确答案，解决疑难问题，不留后遗症。限时阅读的好处有以下几点：
第一，语言学习必须提高复现率，持之以恒，才能进步与提高。
第二，有利于培养学生集中注意力。
第三，教师可随时纠正错误的阅读习惯，利于良好习惯的养成。
第四，利于教师有计划、有目的、循序渐进地进行教学。
6.激发兴趣，学会"觅食"。通过阅读，学生学到许多课本上没有的知识，这不仅扩大了他们的视野和知识面，更激发了他们阅读的积极性和求知欲。为了保持学生的积极性我们把课堂延伸到课外，学生由"要我读"，变成"我要读"。教师引导他们读一些简易报刊、畅销书等。
另外，我们还定期举办"新闻发布会"，让学生把他们课外读到的有兴趣、有意义的"精华"讲出来，与大家共欣赏，共分享。同学们在阅读中尝到了喜悦，体验到了成功，学生们非常高兴。难怪有人说：“课外阅读是教师最得力的助手。"这话确实不假。
7.通过大量的实践练习，我们在做阅读理解文章时，主要要求学生从以下几个方面进行思考：
A.文章的篇章结构方面：
a. The main idea is…
b. The passage mainly tells us…
c. Form this story you may tell…
d. From this passage we can say…
e. According to the text, we may conclude…
f. What do you think about…
g. Choose the right order of…
h. The story doesn't say so, but it makes you think that…
i. It's inferred that…
B.文章的题目：
a. The best topic/title for this passage should be…
b. What's the best topic/title for this passage?
c. A good topic/title for this passage is…
d. Reading the headlines people can know…
C.文章的单词、短语、句子释意：
a. Which of the following statement is(not)right/wrong?
b."…"sentence、word、phrase、title in the passage means…
;Ⅸ 科普类英语文章
随着科学技术的飞速发展和全球化进程的不断加快，科普 文章 在向社会大众普及科学技术知识，提高公众科学素养等方面发挥着举足轻重的作用。下面是我带来的科普类英语文章，欢迎阅读!
科普类英语文章
生物与环境平衡的危机
The history of life on earth has been a history of interaction between living things and their surroundings. To a large extent, the physical form and the habits of the earth’s vegetation and its animal life have been molded by the environment. Considering the whole span of earthly time, the opposite effect, in which life actually modifies its surroundings, has been relatively slight. Only in the present century has one species man acquired significant power to alter the nature of his world.
During the past quarter century this power has not only become increasingly great but it has changed in character. The most alarming of all man’s assaults upon the environment is the contamination of air, earth, rivers, and sea with dangerous and even lethal materials. This pollution is for the most part irrecoverable. In this now universal contamination of the environment, chemicals are the sinister partners of radiation in changing the very nature of the world the very nature of its life. Chemicals sprayed on croplands or forests or gardens lie long in soil, entering into living organisms, passing from one to another in a chain of poisoning and death. Or they pass mysteriously by underground streams until they emerge and combine into new forms that kill vegetation, sicken cattle, and work unknown harm on those who drink from once pure wells. "Man can hardly even recognize the devils of his own creation," as a scientist has said.
It took hundreds of millions of years to proce the life that now inhabits the earth. Given time not in years but in millennia life adjusts, and a balance has been reached. But in the modern world there is no time.
The rapidity of change follows the impetuous pace of man rather than the deliberate pace of nature. Radiation is now the unnatural creation of man’s tampering with the atom. The chemicals are the synthetic5 creations of man’s inventive mind, having no counterparts in nature.
To adjust to these chemicals would require not merely the years of a man’s life but the life of generations. And even this, were it by some miracle possible, would be futile, for the new chemicals come from our laboratories in an endless stream; almost five hundred annually find their way into actual use in the United States alone. Among them are many that are used in man’s war against nature. Since the mid 1940’s over 200 basic chemicals have been created for use in killing insects, weeds, and other organisms described as "pests."
It is not my contention that chemical insecticides must never be used. I do contend that we have put poisonous and biologically potent chemicals indiscriminately into the hands of persons largely or wholly ignorant of their potentials for harm. We have subjected enormous numbers of people to contact with these poisons, without their consent and often without their knowledge. I contend, furthermore, that we have allowed these chemicals to be used with little or no advance investigation of their effect on soil, water, wildlife, and man himself. Future generations are unlikely to forgive our lack of concern for the integrity of the natural world that supports all life.
地球上生命的历史一直就是一部生物与其环境相互作用的历史。在很大程度上，地球上动植物的形态以及习性都是由外部环境所塑造的。考虑到地球上生命存在的整个时间，相反作用，即生命对其周围环境的实际改变作用，却相对很小。只有在当前这个世纪(指20世纪)才有一个物种--人类，获得了强大的力量，改变了其所生存的世界的自然状态。
在过去的1/4世纪中，这种力量不仅日趋强大，而且其性质也发生了变化。在人类破坏环境的种种行为中，最令人担忧的是人类向大气、土壤、河流以及海洋中排放危险甚至致命物质，而当今这种污染在很大程度上是无法挽救的。在当今这种对环境的普遍污染中，化学制品与辐射狼狈为奸，改变着地球的自然状态，也就是改变着地球上生命的自然状态。喷洒到农田、森林或者花园里的化学物质长期滞留于土壤中，渗入有机体内，并彼此相传，形成了一个中毒与死亡的链条。化学物质还神秘地通过地下水传递，最终以新的形式出现并结合，使植物毒死，牲畜害病，并使饮用一度纯净的井水的人遭受了不明之害。正如一位科学家所言：“人类甚至对自己创造的恶魔都不认识。”
地球历经了许多亿年才创造了栖息其上的生命。经过了一定时间--不是以若干年计而是以若干千年计的时间--生命开始适应环境，并形成了一种与环境的平衡。但是在现代世界中，时间这一因素已经没有了。
环境改变的速度不再顺从大自然从容不迫的节奏，而是顺从人类急切匆匆的步伐。辐射是当今人类通过支配原子而得到的一种非自然的创造物。化学制品则是人类有发明创造力的头脑创造出来的合成物，在自然界本无相应的东西。
为了适应这些化学制品，人类需要付出的时间不会只是一个人一生的时间，而是几代人的时间。而即使这样，就算出现奇迹成为可能，这种适应也是徒劳的，因为新的化学制品从我们的实验室中源源不断地涌出。仅在美国，每年就有大约500种化学制品投入使用，其中许多是用于人类对自然的战争中。从20世纪40年代中期起，人类已经创造了200多种基本化学制品用来消灭昆虫、野草以及其他所谓的“有害生物”。
我不是说人类决不能使用化学杀虫剂。我要说的是，我们不分青红皂白地将这些有毒的、具有强大生物功能的化学制品，交给了那些对这些制品的潜在危害基本上或者完全无知的人去使用。我们使众多的人接触这些有毒物质，却没有征得他们的同意，并常常将他们蒙在鼓中。我还要说的一点是，我们允许使用这些化学制品，却事先很少或者根本没有调查它们对土壤、水、野生生物以及人类自身造成的影响。我们缺乏对万物赖以生存的自然界生态统一的关心，对此，我们的后代是不可能原谅的。
科普类英语文章
基因技术能否使人更聪明?Get Smart
Many people dream of having a smarter brain. Princeton neurobiologist Joseph Z. Tsien found the key. In September he announced that he’d built a better mouse by altering a gene that affects learning and memory. A similar process of gene manipulation might conceivably be used one day to boost intelligence in humans.
The secret lies in a feature of brain cells called the nmda receptor, which Tsien likens[1] to a cylindrical tube or window that mediates[2] the flow of information. When the window is open, chemicals called neurotransmitters flow through easily and memory is registered and stored. But as organisms mature, the window begins to close. (This may explain why children lose their facility for learning new languages when they reach sexual maturity and why some people suffer memory loss as they age.)
Tsien noticed that the receptor worked more efficiently when teamed[3] with the gene NR2B, so he introced extra NR2B genes into a batch of fertilized mouse eggs. In a normal mouse, the memory window is open for just 150-thousandths of a second. In Tsien’s specially engineered mice, the window opens for 250-thousandths of a second, long enough to make a remarkable difference in memory retention. When he pitted[4] his mice against common mice, they won paws down. Ordinary mice could recognize a Lego block for 12 hours, but smart mice could remember the block for up to three days. "That’s a profound enhancement," Tsien says.
Can it be done with humans? Maybe, but genetic engineering will have to make some extraordinary advances first. And some thorny ethical issues will have to be resolved. Meanwhile, Tsien promises to keep his furry little geniuses locked up in a lab, far from your larder. "Otherwise," he says, "you might need a smart cat or a smart mousetrap to catch them."
许多人都希望自己能变成更聪明。普林斯顿神经生物学家Joseph Z. Tsien就找到了这把开启智慧之门的钥匙：他于九月宣布，通过改变影响学习和记忆能力的基因培养出了一只聪明的老鼠。类似的基因处理技术有望在未来日子里运用到人脑，以推动人类智慧的飞跃。
该技术的奥秘就在于名为nmda感受器的脑细胞的功能。Tsien将其比作一个传递信息流的圆柱通道或窗口。当窗口开放时，某种称为神经传递素的化学物质就能轻易流过，记忆因此登记并存储了下来。然而，当器官成熟时，这扇窗口就开始关闭。(这也能解释为何 儿童 长大后(性器官成熟之时)会失去掌握新语言的能力，以及为何某些人年老时会患失忆)。
Tsien注意到，当感受器与名为NR2B的基因协作时效率会更高。因此，他将NR2B基因植入一批老鼠的受精卵中。一只普通老鼠的记忆之窗仅开放千分之150秒。而经Tsien植入基因的老鼠，记忆之窗能开放千分之250秒，这已经能够使其 记忆力 发生惊人的改变。当他让自己的老鼠与普通老鼠互斗时，它们竟能轻而易举地取胜。普通老鼠能够保留关于Lego block的记忆12小时，而聪明的老鼠居然能将记忆保持三天。“这可是一个意义深远的进步。”Tsien这样说。
那么，人类也能接受这种基因移植吗? 或许可以，但前提是基因工程得首先做出非凡的成就，还必须解决一系列棘手的伦理问题。Tsien保证他一定会将那些披着毛皮的小天才锁入实验室，远离人们的食品柜。“否则，”他说，“为了捉住他们，人们就不得不去寻找更聪明的猫或者功能更强的捕鼠器了。”
科普类英语文章
食用转基因食品安全吗?Food Safe To Eat?
Traditional plant breeding involve s crossing varieties of the same species in ways they could cross naturally.For example，disease-resistant varieties of wheat have been crossed with high-yield wheat to combine these properties.This type of natural gene exchange is safe and fairly predictable.
Genetic engineering(GE)involves exchanging genes between unrelated species that cannot naturally exchange genes with each other.GE can involve the exchange of genes between vastly different species――e.g.putting scorpion toxin genes into maize or fish antifreeze genes into tomatoes.It is possible that a scorpion toxin gene，even when it is in maize DNA，will still get the organism to proce scorpion toxin――but what other effects may it have in this alien environment?We are already seeing this problem――adding human growth hormone genes to pigs certainly makes them grow――but it also gives them arthritis and makes them cross-eyed，which was entirely unpredictable.
It will be obvious，for example，that the gene for human intelligence will not have the same effect if inserted into cabbage DNA as it had in human DNA――but what side-effect would it have?In other words，is GM food safe to eat?The answer is that nobody knows because long-term tests have not been carried out.
Companies wanting a GM proct approved in the UK or USA are required to provide regulatory bodies with results of their own safety tests.Monsanto’s soya beans were apparently fed to fish for10weeks before being approved.There was no requirement for independent testing，for long-term testing，for testing on humans or testing for specific dangers to children or allergic people.
The current position of the UK Government is that“ There is no evidence of long-term dangers from GM foods.”In the US，the American Food and Drug Administration is currently being prosecuted for covering up research that suggested possible risks from GM foods.
传统的植物培育 方法 ，是依照植物自然杂交的方式，进行相同物种的人工杂交。比如，抗病小麦同高产小麦杂交，形成了一种具有双重特性的新的小麦品种。这种自然的基因交换既安全，又具有相当的可预见性。
基因工程是在彼此毫无关系的物种之间，相互交换在自然条件下无法交换的基因。它可在有巨大差异的物种之间进行基因交换。比如，将蝎子毒素基因注入玉米，或者将鱼防冻基因注入西红柿。即使在玉米DNA中，蝎子毒素基因依然可能获得有机组织产生蝎子毒素。但是在这种异质的环境中，这种基因产品会有什么其他作用吗?我们实际上已经发现这个问题：将人类生长荷尔蒙基因植入猪的体内，一定会使猪的生长加速，但是同时也使猪患上了关节炎和内斜视，而这一切是完全无法预测的。
打个比方，人类的智力基因显而易见在人体DNA内和注入卷心菜DNA后的作用是不同的。但将它植入卷心菜中会产生什么样的副作用呢?换句话说，食用转基因食品安全吗?没有人知道答案，因为人们尚未进行长期的测试。
在英国或者美国，一个公司如果希望其转基因产品获得批准，它必须向管理机构提供本公司转基因产品安全测试的结果。Monsanto的大豆在获得批准之前，曾用了10周时间进行喂鱼试验。目前，尚无要求对转基因产品进行独立测试、长期测试、人体测试，或者就其对儿童及过敏者所造成的特定危险进行测试。
英国政府目前的态度是：“尚无证据表明食用转基因食品存在长期性的危险。”在美国，人们正在起诉美国食品药品管理局掩盖转基因食品安全性的研究结果，这些研究结果表明，食用转基因食品可能导致危险。