第十四篇 Robotic Highway Cones
A University of Nebraska professor has developed robotic cones and barrels. 1 They can even be programmed to move on their own 1 at any particular part of the day, said Shane Farritor, an assistant professor of mechanical engineering at Nebraska.
For example, if workers arrived at 6 am, the cones could move from the side of the highway to block off the lane at that time. 2 “It just seems like a very good application for robots.” Farritor said. “The robotic cones would also hel p remove people from hazardous jobs on the highway putting barrels and cones into place,” Farritor said in a report on his creation.
3 The fund allowed Farritor to work on the project with graduate students 2 at Nebraska and his assistant Steve Goddard.
The robots are placed at the bottom of the cones and barrels and are small enough not to greatly change the
appearance of the construction aides. “It would look exactly the same,” Farritor said. “Normally there’s a kind of rubbery, black base to them. 4 ”
Farritor has talked with officials from the Nebraska Department of Roads about how the robots would be most useful to what they 3
might need.
The robots could come in handy 4 following a slow-moving maintenance operation, like painting a stripe on a road or moving asphalt, where now the barrels have to be picked up and moved as the operation proceeds. “That way you don’t have to block off a 10-mile strip for the operation,5” Farritor said.
Whiles 6 prototypes have been made, they are not in use anywhere. Farritor said he has applied for a patent and is considering what to do next. 5 He is also thinking about marketing the robots to roads departments and others across the country who 7 may benefit from them.
词汇： cone /kEun/ n.圆锥体 strip /strip/ n.条，带 hazardous /5hAzEdEs/ adj.有危险的 asphalt /5AsfAlt/ n.沥青 aide /eid/ n.辅助用具 prototype /5prEutEtaip/ n.原型 rubbery /5rQbEri/ adj.类似橡胶的 patent /5peitEnt/ n.专利权注释：
1. on their own ：独立地，靠自己的力量
2. graduate students ：研究生
3. they ：指代 officials 。
4. come in handy ：派得上用处
5. That way you don’t have to block off a 10-mile strip for the operation ：可译为“采用了这种方法，施工时就不用封锁 10英里的地带”。
6. While ：虽然
7. who ：指代 roads departments and others 。练习：
A And they can return to the original place at the end of the day.
B He is thinking about starting a small business.
C Farritor was “Inventor of the Year” in 2003.
D Work on the idea began in 2002 using a National Academy of Sciences grant.
E We replace that with a robot.
F These robotic cones and barrels can move out of the way, or into place, from computer commands made miles away.
答案与题解：
1. F 第一段要恢复的句子的内容应该与 robotic cones and barrels 有关。F 句中的 These robotic cones and barrels 正好说明 F 句是第一句的后续句， these 这个代词把第一、第二句连接起来。第一、二句内容上是
连贯的，证实第二句是第一句的后续句。
2. A 本段第一句有两处与A句在内容上相连。第一句的at 6 am与A句的at the end of the day相对应；第二段第一句的move from the side of the highway与A句的return to the original place相连。所以A句是第一句的后
续句。
3. D 本段的第二句有The fund。fund之前用的是定冠词the，说明前面已有句子提到过fund或其他类似资助的词。D句说的是grant，所以D句是答案。
4. E这一段说机器人安装在锥形路标和路障的底部 .其原来外貌几乎没有什么改变。原来的底部是黑色的，用类似橡胶的材料制成。而E句的that指的是底部(base)，E句的意思是“用机器人置换底部”。
5. B 本段的第四句He is also thinking about …中的also是一个重要的线索，说明前面一定出现过he is thinking。但是在前面两句中没有找到。那么，本段中要恢复的句子一定是练习中的B句。
第十四篇机器人高速路锥形路标
一名耐伯拉斯卡（Nebraska）大学的教授开发出了机器人锥形路标和路障。几英里以外的电脑就可以发出
指令将这些机器人锥形路标和路障移开或者移入某一地点。耐伯拉斯卡大学机械工程助教谢恩·佛瑞特说
人们甚至可以编程让这些机器人路标和路障在一天的某个时段自行移动。
例如，如果工人们上午6点要在高速公路上施工，锥形路障就可以在这个时候从高速公路边上移动到施工
的行车道上设置障碍。并且它们还能在一天工作结束后回到原地。佛瑞德说：“这看起来是对机器人非常好
的应用。”佛瑞德还在他的一篇发明报告中说：“机器人还可以使人们从在高速公路上放置路标和路障的危
险工作中解脱出来。”
这个想法起始于2002年国家科学研究院的一个授权项目。这项基金得以使佛瑞德可以和耐伯拉斯卡大学的
研究生以及助理史蒂文·戈达德共同开发这个项目。
机器人被安装在锥形路标和路障的底部，它们非常小，足以不改变这些路标、路障的原貌。佛瑞德说：“它
们看起来和普通的路标、路障一模一样。普通的路标、路障带有一个黑色的橡胶底座。现在的底座被换成
了机器人。”
佛瑞德和耐伯斯达大学公路部门的官员曾经探讨怎样才能使机器人昀有利于他们的需要。
机器人可以用于缓慢移动的维护性的操作，例如在为公路粉刷白色的标线操作中需要随时摆放和移动路标、
路障的地方。Farritor说：“采用了这种方法，人们就不用在施工中一次封锁10英里长的地带。”
虽然发明的雏形，已经作成了，但还没有投入使用。佛瑞德说他已经申请了专利并且正在考虑下一步的打
算。他计划开一家小型的公司，并打算向公路部门和其他国内能受益于这项发明的地方推销。
2016职称英语教材-卫生类C级完形填空及参考译文1 第一篇Better Control of TB Seen If a Faster Cure Is Found The World Health Organization1 estimates that about one-third of all people are infected with bacteria that cause tuberculosis . Most times, the infection remains inactive. But each year about eight million people develop active cases of TB, usually in their lungs. Two million people die of it. The disease has increased with the spread of AIDS and drug-resistant forms of tuberculosis. Current treatments take at least six months. People have to take a combination of several antibiotic drugs daily. But many people stop as soon as they feel better. Doing that can lead to an infection that resists treatment. Public health experts agree that a faster-acting cure for tuberculosis would be more effective. Now a study estimates just how effective it might be. A professor of international health at Harvard University2 led the study. Joshua Salomon says a shorter treatment program would likely mean not just more patients cured. It would also mean fewer infectious patients who can pass on their infection to others. The researchers developed a mathematical model to examine the effects of a two-month treatment plan. They tested the model with current TB conditions in Southeast Asia. The scientists found that a two-month treatment could prevent about twenty percent of new cases. And it might prevent about twenty-five percent of TB deaths. The model shows that these reductions would take place between two thousand twelve and two thousand thirty. That is, if a faster cure is developed and in wide use by two thousand twelve. The World Health Organization reductions the DOTS3 program in nineteen ninety. DOTS is Directly Observed Treatment, Short-course. Health workers watch tuberculosis patients take their daily pills to make sure they continue treatment. Earlier this year, an international partnership of organizations announced a plan to expand the DOTS program. The ten-year plan also aims to finance research into new TB drugs. The four most common drugs used now are more than forty years old. The Global Alliance for TB Drug Development4 says its long-term goal is a treatment that could work in as few as ten doses. 1.找到速效治疗剂可以更好控制结核病 世界卫生组织估计全球有大约三分之一的人感染了导致结核病的病菌。大多数时候，这种感染是不活跃的。但是每年大约有八百万结核病病例，通常是在肺部。两百万人因此丧命。结核病发病率由于艾滋病的传播和抗药型结核病的出现而增加。目前的治疗至少需要六个月。患病者不得不每日服用多种抗生素药品。许多人在稍感舒适后就停止使用药品，这么做可能导致抗药性感染。公共卫生专家一致认为针对结核病的速效治疗剂将会更加有效果。现在有一项研究评估这种速效治疗剂究竟效力有多大。这项研究由美国哈佛大学国际卫生方面的教授率领。Joshua Salomon说，疗程较短的治疗计划可能不仅仅意味着更多病人被治好，也意味着将感染传给别人的病人会更少。 研究者们设计了一个数学模型来检测两个月治疗计划的效果。他们以东南亚目前的结核病情况来检验这个模型。科学家们发现两个月的治疗可以防止大约20％的新病例，也可能防止大约5％因结核病引起的死亡。这个模型表明，如果速效治疗剂可以在2012年前研发出来并大规模使用的话，减少结核病例在2012年到2030年间就可以实现。 世界卫生组织在1990年制定了DOTS计划，DOTS意指短期直接观察治疗。卫生工作者监督结核病人每天服药，以确信他们继续治疗。今年年初，一个国际组织同盟宣布了一项扩大DOTS的计划。这个十年计划也旨在资助新结核药品的研究。现在四种最常用的药品也有四十多年的历史了。全球结核病药物开发联盟宣称它的长期目标是找到一种治疗方法，可以通过十次剂量就效果。
2014-2017年全国卷高考英语作文真题范文汇总 笔者最近认真研读了2014-2017年高考英语全国卷作文真题范文以及高考英语作文评分标准，通过反复斟酌，笔者决定根据高考英语作文评分标准对这些作文真题进行重新创作，真诚希望广大考生可以利用这些原创范文积累写作素材，同时也希望广大考生可以根据作文评分标准认真分析这些原创范文并最终提高英语写作的能力。 1.2017年全国卷Ⅰ作文真题： 第二节书面表达(满分25分) 假定你是李华，正在教你的英国朋友Leslie学习汉语。请你 写封邮件告知下次上课的计划。内容包括： （1）时间和地点； （2）内容：学习唐诗； （3）课前准备：简要了解唐朝的历史。 注意： 1.词数100左右； 2.可以适当增加细节，以使行文连贯。 原创范文： Dear Leslie, I hear about the news that you are now keen on Tang poems. Because of this, I’m writing to inform you of the detailed plan for the next class.
Undoubtedly, Tang poems is an indispensable part of Chinese culture, which is worth learning very well. As expected, we’ll meet on this Sunday morning in the local park, which provides an environmentally---friendly atmosphere for many learners, especially language learners. In addition to this, I want to give you a suggestion that you can find some information about the history of the Tang Dynasty on the Internet prior to the arriving lesson we will have altogether. I am looking forward to your early reply as soon as possible. Yours, Li Hua 2.2017年全国卷Ⅱ作文真题： 第二节书面表达（满分25分） 假定你是李华，想邀请外教Henry一起参观中国剪纸（paper-cutting）艺术展。请给他写封邮件，内容包括： 1.展览时间、地点； 2.展览内容。 注意：1.词数100左右； 2.可以适当增加细节，以使行文连贯。 原创范文：
2015年职称英语理工类B级考试真题 第一部分：词汇选项 1.The organization was bold enough to face the press. A.pleased B.powerful C.brave D.sensible 参考答案：C 2.I will not tolerate that sort of behavior in my class. A.accept B.control C.observe D.regulate 参考答案：A 3.I realized to my horror that I had forgotten the present. A.limit B.fear C.power D.fool 参考答案：B 4.Most people find rejection hard to accept. A.excuse B.client C.destiny D.refusal 参考答案：D 5.She's extremely competent and industrious. A.hardworking B.honest C.objective D.independent 参考答案：A 6.The doctors did not reveal the truth to him. A.hide B.handle C.disclose D.establish 参考答案：C 7.He tried to assemble his thoughts. A.clear B.share C.gather D.spare 参考答案：C
8.The law carries a penalty of up to three years in prison. A.message B.punishment C.guilt D.obligation 参考答案：B 9.Prisoners were kept in the most appalling conditions. A.flexible B.terrible C.reasonable D.serious 参考答案：B 10.These products are inferior to those we brought last year. A.poorer than B.narrower than https://www.doczj.com/doc/c517147136.html,rger than D.richer than 参考答案：A 11.The political situation in the region has deteriorated rapidly. A.improved B.changed C.worsened D.developed 参考答案：C 12.There was a simultaneous trial taking place in the next building. A.coexisting B.fair C.full D.pubic 参考答案：A 13.They're petitioning for better facilities for the disabled on public transport. A.requesting B.planning C.preparing D.looking 参考答案：A 14.He said some harsh words about his brother. A.unkind B.proper C.normal D.unclear 参考答案：A 15.We were attracted by the lure of quick money. A.amount
一、职称英语阅读理解文章（理工类）译文(参加理工A、B、C级考试需要掌握文章) (3) 第一篇福特放弃电动汽车 (3) Ford Abandons Electric Vehicles (3) 第二篇世界原油产量可能提前十年达到峰值 (4) World Crude Oil Production May Peak a Decade Earlier Than Some Predict (5) 第三篇公民科学家 (5) Citizen Scientists (6) 第四篇汽车技术 (6) Motoring Technology (7) 第五篇深夜喝咖啡 (7) Late-night Drinking (8) 第六篇编制灯光 (8) Weaving with Light (9) 第七篇用糖为手机发电 (9) Sugar Power for Cell Phones (10) 第八篇引人注目的埃菲尔铁塔 (10) Eiffel Is an Eyeful (11) 第九篇埃及饱受饥饿折磨 (11) Egypt felled by famine (12) 第十篇年轻雌猩猩学习优于她们的弟兄 (12) Young Female Chimps Outlearn Their Brothers (13) 第十一篇申请个人域名的网上费用 (14) The Net Cost of Making a Name for Yourself (14) 第十二篇纳佛罗里达遭受冷气团袭击 (15) Florida Hit by Cold Air Mass (15) 第十三篇隐形环 (15) Invisibility Ring (16) 第十四篇日本用来监视醉酒司机的新型概念车 (17) Japanese Car Keeps Watch for Drunk Drivers (17) 第十五篇肋生双翅机器人学飞行 (18) Winged Robot Learns to Fly (18) 第十六篇日本人的地心旅行 (19) Japanese Drilling into Core of Earth (19) 第十七篇地球防晒霜 (20) A Sunshade for the Planet (20) 第十八篇石油匮乏 (21) Thirst for Oil (21) 第十九篇延长人类寿命 (22) Prolonging Human Life (22) 第二十篇深海探索器 (23) Explorer of the Extreme Deep (23) 第二十一篇植物，沼气的又一来源 (24) Plant Gas (24) 第二十二篇雪花 (25)
The First Four Minutes最初四分钟 When do people decide whether or not they want to become friends?人们什么时候决定他们是否愿意成为朋友？During their first four minutes together, according to a book by Dr. Leonard Zunin. In his book, “Contact：The first four minutes" he offers this advice to anyone interested in starting new friendships：“Every time you meet someone in a social situation, give him your undivided attention for four minutes. (1) A lot of people's whole lives would change if they did just that. ”按列奥纳多?祖尼博士的书中所说是在他们相处的最初四分钟。在他的书《接触：最初四分钟》里，他向所有对开始新的友谊感兴趣的人们提出了这样的建议：“每次你在社交场合遇到什么人时，全神贯注地注意他四分钟。如果这样做了的话，他们的生活就会完全不同。”； You may have noticed that the average person does not give his undivided attention to someone he has just met. 你可能已经注意到了，一般人都不会全神贯注地注意一个他刚认识的人。(2) He keeps looking over the other person's shoulder, as if hoping to find someone more.他不停地往其他人身后看，好像要在屋里其他地方找到更趣的人似的。If anyone has ever done this to you, you probably did not like him very much.如果有人对你这样，你大概不会很喜欢他。
2014 高考英语作文全国卷I 假定你是李华，计划暑假间去英国学习英语，为期六周。下面的广告引起了你的注意，请给该校写封信，询问有关情况（箭头所指内容） 注意：1．词数100左右；2．可以适当增加细节，以使行文连贯。3．参考词汇：住宿-accommodation Dear Sir/Madam, I am a student in China and I plan to go to Britain to attend a summer school during the vacation. I’ve seen your ad, and I’d like to know something more about your six -week English course. First, when will the course start and how many class hours are th ere per week? Besides, I wish there would not to be too many students in a class. I’d also like to know how much I have to pay for the course and whether accommodation is included. Would there be a host family or university dormitory? I’m looking forwar d to your early reply. 2014 全国卷II 一家英语报社向中学生征文，主题是“十年后的我”，请根据下列要点和你的畅想完成短文。 1.家庭； 2.工作； 3.业余生活。 注意：1.词数100左右： 2.可以适当增加细节，以使行文连贯： 3.开头语已为你写好。 I often imagine _____ my life will be like in the future. I think my life will be very different in ten years. I will be twenty-eight years old by then. I will have my own family, probably with a lovely child. I hope I will work in a computer company as a program designer. I’ll enjoy my work and get along well ___ my colleagues. I’ll do a good job in whatev er I do. In my free time, I’ll continue to take regular exercise, such as swimming, running and various ball games. On my holiday, I’ll travel around the world. In a word, my life will be _____ richer and more colorful. 2015 全国卷I 假定你是李华, 你校英文报“外国文化”栏目拟刊登美国节日风俗和中学生生活的短文。请给美国朋友彼得写信约稿, 要点如下: 1. 栏目介绍; 2. 稿件内容; 3. 稿件长度: 约400词汇; 4. 交稿日期: 6月28日前天 注意: 1. 词数100左右;
职称英语理工类B级阅读理解真题及答案(第三篇) 第4部分：阅读理解（第31——45题，每题3分，共45分） 下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个选项。 第三篇 Can You Hear This? When something creates a sound wave in a room or anauditorium, listeners hear the sound wave directly from the source. They alsohear the reflections as the sound bounces off thewalls. floor, and ceiling. These are called the reflected wave or reverberant(反射)sound, which can be heard evenafter the sound is no longer coming from the source. The reverberation time of an auditorium isdetermined by the volume or interior size of the auditorium. It is alsodetermined by how well or how poorly the walls, ceiling, floor, and contents ofthe room (including the people) absorb sound. There is no ideal reverberation time,because each use of an auditorium calls for different reverberation. Speechneeds to be understood clearly; therefore rooms used for talking must have ashort reverberation time. The full-sound performance of music such ad Wagneroperas or Mahler symphonies should have a long reverberation time. The light,rapid musical passages of Bach or Mozart need a reverberation time somewherebetween. Acoustic problems often are caused by poorauditorium design. Smooth, curved reflecting surfaces create large reflections.Parallel (平行的）wallsreflect sound back and forth, creating a rapid, repetitive pulsing https://www.doczj.com/doc/c517147136.html,rge pillars (柱）and comerscan cause acoustic shadows as the sound waves try to pass around the object.Some of these
2012年职称英语考试理工类C 级真题试卷及参考答案
第一部分：词汇选项（第1~15题，每题1分，共15分） 下面每个句子中均有1个词或者短语有括号，请为每处括号部分确定1个意义最为接近的选项。 1、The storm caused severe damage. A．physical B．accidental C．serious D．environmental 【答案】：C 2、Many forms of cancer can be cured if detected early A．selected B．operated C．developed D．discovered 【答案】：D 3、The story was published with the sole purpose of selling newsp apers A．real B．main C．only D．practical 【答案】：C
4、A large crowd assembled outside the American embassy A．gathered B．watched C．shouted D．walked 【答案】：A 5、He kept in constant contact with his family while he was in Au stralia A．gradual B．regular C．direst D．occasional 【答案】：B 6、On the table was a vase filled with artificial flowers A．wild B．fresh C．lovely D．false 【答案】：D 7、We had trouble finding a pure water supply A．typical B．complete
职称英语补全短文第3课时1 PASSAGE 8 Einstein Named "Person of Century" Albert Einstein，whose theories on space time and matter helped unravel the secrets of the atom and of the universe，was chosen as "Person of the Century" by Time magazine on Sunday. A man whose very name is synonymous with scientific genius，Einstein has come to represent_（1）_the flowering of 20th century scientific thought that set the stage for the age of technology. "The world has changed far more in the past 100 years than in any other century in history. The reason is not political or economic，but technological-technologies_（2）_，" wrote theoretical physicist Stephen Hawking in a Time essay explaining Einstein's significance. "Clearly，no scientist better represents those advances than Albert Einstein." Time chose as runner-up President Franklin Roosevelt to represent the triumph of freedom and democracy over fascism，and Mahatma Gandhi as an icon for a century when
新课标I卷高考英语试题适用的省份有：河南、河北、山西三省，2014年高考英语作文考试时间为6月7日15：00-17：00，21教育网装将在6月8日后更新2014年新课标I卷高考英语作文题目，敬请期待！预祝所有考生高考顺利！ 2013年新课标I卷高考英语作文题目： 书面表达(满分25分) 假定你是李华。请你给笔友Peter写封信，告诉他你叔叔李明将去他所在城市开会，带去他想要的那幅中国画，同时询问他是否可以接机。信中还需说明： 李明：高个子，戴眼镜 航班号：CA985 到达：8月6日上午11：30 注意：1. 词数100左右； 2. 可以适当增加细节，以使行文连贯； 3. 开头语和结束语已为你写好。 Dear Peter, How are you doing? _________________________________________________________________ _________________________________________________________________ Looking forward to your reply. Yours， Li Hua
2014年北京高考于6月7日，8日举行，2014高考英语作文题目会在（2014年6月7日）在21教育网发布，请广大考生引起重视！21教育网助您在6月7日杨帆起航之时，第一时间了解自己的战况。恭祝各位考生旗开得胜！ 敬请关注：21教育网 21教育网会稍后发布2014北京高考各科目试题汇总和2014北京高考各科目的答案汇总。请各位考生收藏本页面关注（Ctrl+D) 试题推荐： 2013年高考真题——英语（北京卷）word解析版 2014年北京高考作文题目： 第四部分：书面表达（共两节，15 分）第一节情景作文（20 分） 假设你是红星中学高三（1）班的学生李华，请按照以下四幅图的先后顺序，用英文写一篇周记。记述爸爸出差期间，妈妈生病，你照顾她的过程。 注意： 1. 周记的开头已经为你写好。 2. 词数不少于 60.
2012年职称英语理工类 新增文章 阅读理解（6篇） 第六篇Making Light of1 Sleep 第十九篇Graphene's Superstrength1 *第三＋八篇"Life Form Found" on Saturn's Titan *第四十篇Teaching Math, Teaching Anxiety +第四＋五篇Teaching Math, Teaching Anxiety +第四十六篇Ants Have Big Impact on Environment as "Ecosystem Engineers" 注： 1、+表示A级文章；*表示B即文章；其他为C级文章 2、阅读理解 3、2012年词汇部分与2011年教材相比未作任何变化 阅读理解 第六篇Making Light of1 Sleep All we have a clock located inside our brains. Similar to your bedside alarm clock，your internal clock2 runs on a 24-hour cycle. This cycle，called a circadian rhythm，helps control when you wake，when you eat and when you sleep. Somewhere around puberty，something happens in the timing of the biological clock. The clock pushes forward，so adolescents and teenagers are unable to fall asleep as early as they used to. When your mother tells you it's time for bed，your body may be pushing you to stay up3 for several hours more. And the light coming from your computer screen or TV could be pushing you to stay up even later. This shift4 is natural for teenagers. But staying up very late and sleeping late can get your body's clock out of sync with the cycle of light and dark5. It can also make it hard to get out of bed in the morning and may bring other problems，too. Teenagers are put in a kind of a gray cloud6when they don't get enough sleep，says Mary Carskadon，a sleep researcher at Brown University in Providence，RI7 .It affects their mood and their ability to think and learn. But just like your alarm clock，your internal clock can be reset. In fact，it automatically resets itself every day. How? By using the light it gets through your eyes. Scientists have known for a long time that the light of day and the dark of night play important roles in setting our internal clocks. For years，researchers thought that the signals that synchronize the body's clock8were handled through the same pathways that we use to see. But recent discoveries show that the human eye has two separate light-sensing
2012年度全国职称英语等级考试 理工类（A级）全真模拟试题二 第1部分：词汇选项（第1-15题，每题1分，共15分） 下面每个句子中均有1个词或短语画有底横线，请为每处画线部分确定1个意义最为接近的选项 1. He was unable to give a credible explanation for his behavior. A. workable B. convincing C. practical D. reliable 2. Smoking is banned in the building. A. listed B. forbidden C. handled D. investigated 3. I want a job with good prospects for promotion. A. advancement B. replacement C. retirement D. advertisement 4. The report was compiled from a survey of 5000 households. A. printed B. attached C. written D. sent 5. The patient showed a marked improvement in her condition after changing medication. A. great B. clear C. quick D. regular 6. Actors dressed in authentic costumes re-enact the battle. A. faithful B. royal C. genuine D. sincere 7. People who travel by rail still read an immense amount. A. immediate B. enormous C. equal D. moderate 8. He demolished my argument in minutes. A. disapproved B. disputed C. accepted D. supported 9. Polluted water sources are a hazard to wildlife. A. evidence B. danger C. case D. picture 10. Ashley gazed at him, her thoughts in turmoil. A. failure B. doubt C. confusion D. relief 11. It was an article in the local newspaper which finally spurred him into action .
2020职称英语补全短文练习题(1) The Invader of AIDS The invader is small, even in the microscopic world of bacteria and viruses. It is alive only in the strictest sense of the world. It had no intelligence, no means of mobility, no methods of defense in the outside world. It is fragile, easily killed by common household bleach(漂白剂)and even short periods outside the body. 1 . It is the AIDS virus, and it is a killer. AIDS is a disease, caused by a virus that breaks down part of the body’s immune system, leaving a person defenseless against a variety of unusual life-threatening illnesses.2 . The body’s immune system normally provides us the weapons we need to win constant battles with invading viruses, bacteria and other invading organisms. His defense system is powerful but not perfect. 3 . We do not even know that anything is happening. But the AIDS virus acts differently from other invaders. It attacks the very cells that normally protect us. 4 . It turns our own white blood cells into mini-factories or making more viruses. Each time a cell is taken over, it fills up with thousands of new viruses, dies and releases those viruses, with attack more white blood cells. After enough attacks, our defense system is weakened and certain infections and conditions that we normally fight off with no problem take advantage of his weakness.
2014·新课标全国卷Ⅰ 假定你是李华，计划暑假期间去英国学习英语，为期六周。下面的广告引起了你的注意，请给该校写封信，询问有关情况(箭头所指内容)。注意：1.词数100左右； 2．可以适当增加细节，以使行文连贯。 参考词汇：住宿accommodation 【参考范文】 Dear Sir/Madam， I am a student in China and I plan to go to Britain to attend a summer school during the vacation.I've seen your ad，and I'd like to know something more about your six-week English course.First，when will the course start and how many class hours are there per week？Besides，I wish there would not be too many students in a class.I'd also like to know how much I have to pay for the course and whether accommodation is included.Would there be host family or university dormitory? I am looking forward to your early reply. Yours faithfully， Li Hua 亲爱的先生/女士，我是一名在中国的学生，我计划在假期期间去英国上暑期学校。我看过你的广告，我想了解一下你为期六周的英语学习情况。首先，课程什么时候开始，每周有多少课时？此外，我希