雅思阅读强化练习
雅思阅读模拟试题及参考答案
雅思阅读模拟试题及参考答案第一篇试题1. 根据文章，下列哪个陈述是正确的？A. 研究显示，电子设备使用对儿童的发展没有任何负面影响。
B. 儿童使用电子设备越多，他们的社交技能就越好。
C. 儿童使用电子设备会导致面部表情能力的退化。
D. 儿童使用电子设备的时间越长，他们的注意力就越集中。
2. 从文章中可以推断出什么？A. 青少年现在比以前更喜欢户外活动。
B. 大多数青少年每天使用电子设备超过五个小时。
C. 电子设备对青少年的学习成绩没有任何影响。
D. 青少年对电子设备的使用并不感到有罪恶感。
参考答案1. C2. B第二篇试题1. 从文章中可以推断出什么？A. 女性企业家比男性企业家更成功。
B. 女性企业家的工作时间比男性企业家更长。
C. 女性企业家通常在家庭和事业之间取得平衡。
D. 女性企业家比男性企业家更有创造力。
2. 根据文章，下列哪个陈述是正确的？A. 女性企业家的成功很大程度上取决于她们的家庭支持。
B. 现代女性企业家比过去更受到鼓励和支持。
C. 女性企业家在创业过程中面临更多障碍。
D. 女性企业家的成功主要归功于她们的教育背景。
参考答案1. C2. C第三篇试题1. 根据文章，下列哪个陈述是错误的？A. 生活在城市中的人更容易受到空气污染的影响。
B. 城市居民的健康状况普遍比农村居民更差。
C. 长期暴露在空气污染中可能导致呼吸系统疾病。
D. 空气质量对人们的心理健康没有影响。
2. 从文章中可以推断出什么？A. 空气污染对于城市居民来说是不可避免的。
B. 空气质量对于人们的生活质量非常重要。
C. 农村地区的空气质量比城市地区好。
D. 空气污染主要由工业排放引起。
参考答案1. B2. B注意事项请注意，以上参考答案仅供参考，具体情况还需根据文章内容进行判断。
语篇强化训练(有答案)4
Directions:Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.Job seekers should know the rules of labor market before they try to find a proper job. Most career organizations 41 three stages for graduates to follow the process of securing a suitable career: recognizing abilities, matching these to available jobs and presenting them well to possible employers.Job seekers have to make a careful assessment of their abilities. One area of assessment should be of their 42 qualifications, which include special skills within their subject area. Graduates should also consider their own values and attitudes. An honest assessment of personal interests and abilities such as creative skills, or skills acquired from work experience, should also be given careful 43 .The second stage is to study the opportunities which are available for employment. To do this, graduates can study job and 44 information in newspapers, or they can pay a visit to a careers office, write to friends or relatives who may already be 45 in a particular profession. After studying all the various 46 , they should be in a position to make informed comparisons between various careers.Good personal 47 is essential in the search for a good career. Job application forms should be filled in carefully and correctly, without grammar of spelling errors. They should also prepare properly by finding out all they can about the possible employer. When 48information is asked for, job seekers should describe their abilities and work experience in more depth, as well as 49 their own abilities with the employer’s needs, explain why they are interested in a career with the 50 company and try to show that they already know something about the company and its activities. Interviewees should try to give positive answers and not be afraid of asking questions about anything they are unsure about.III. Reading ComprehensionDirections:For each blank in the following passage there are four words or phrases marked A, B, C and D. Fill in each blank with the word or phrase that best fits the context.People read for different purposes. Sometimes people read for information while on other occasions, for understanding. Therefore, we can know that the word “reading” has two51 senses.The first sense is the one in which we read newspapers, magazines, and so on. We can get access to the content of those materials 52 . Such materials may increase our 53of information, but they cannot improve our understanding. And clearly we don’t have any difficulty in gaining the new information, for our understanding is 54 to them before we start. Otherwise, we would have felt the shock of puzzlement.The second sense is the one in which we read something that at first we do not completely 55 . Here the thing to be read is at the first sight better or higher than the reader. The writer is communicating something that can increase the reader’s understanding. Such 56 between unequals – people who know and people who don’t know –must be made possible. Otherwise one person could never learn from another. Here “learning” means understanding more, not 57 more information.What are the 58 in this kind of reading? First, there is inequality in understanding. The writer must be “59 ” to the reader in understanding. Besides, his book must convey something he possesses while his potential readers 60 . Second, the reader must be able to 61 this inequality in some degree. And heshould always try to reach the same level of understanding with the writer. If the 62 is approached, success of communication is achieved.Besides gaining information and understanding, there’s another goal of reading:63 . It is the least 64 and requires the least amount of effort. Everyone who knows how to read can read for entertainment if he wants to. 65 , any book that can be read for understanding or information can probably be read for entertainment as well.51. A. meaningful B. broad C. separate D. informative52. A. easily B. wholly C. briefly D. highly53. A. analysis B. comprehension C. appreciation D. store54. A. equal B. contrary C. inferior D. devoted55. A. agree B. understand C. approve D. enjoy56. A. contact B. relationship C. method D. communication57. A. selecting B. ignoring C. remembering D. creating58. A. conditions B. procedures C. approaches D. purposes59. A. humble B. superior C. kind D. generous60. A. know B. acquire C. lack D. deny61. A. recognize B. follow C. neglect D. overcome62. A. principle B. equality C. information D. content63. A. knowledge B. ability C. entertainment D. culture64. A. enjoyable B. reasonable C. flexible D. demanding65. A. In fact B. On the contrary C. In addition D. On the other handDirections:Read the following passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage you have just read.Dennis Sinar, 51, a doctor from New York, is quick to explain why he took a year-long break from his job. “I was pretty burned out after practicing medicine for 26 years. I needed a recharge.” So he took a “gap year”, from July 2011 to June 2012, to explore things like ancient buildings, antique restoration, archaeology and traditional Eastern medicine, in locations including Alaska, Nepal and Romania.“Taking a break from work is an excellent way for adults to go into a new career or refresh an old one,” said Holly Bull, president of Princeton, N, J. “In recent years, mid-career breaks have been gaining more interest,” she said. A report on adult gap years published this year by a market research company also described the po tential American market for gap years as a “sleeping giant.”“A gap year is a challenge for the older individual to step out of a comfort zone and take a risk. I enjoyed that side most.” said Dr. Sinar, who kept a daily blog about his experience. His time studying Eastern medicine “assured the reasons I went into health care,” said Dr. Sinar, who returned to practice medicine at his old job, although he works fewer days. “I use those experiences to provide my patients with more care,” he added. “And I liste n better than I did before.”George Garritan, chairman of the Department of Leadership and Human Capital Management at New York University, certainly agrees with Dr. Sinar. He said a gap-year experience could be worthwhile for employees and companies. For employees, investing in themselves and improving skill sets is a move that will benefit throughout their career. He added that returning employees feel refreshed and have given more thought to their career. For companies, offering unpaid leaves makes good sense for attracting and keeping talented employees.66. Dr. Sinar took a gap year because he ________.A. had lost his old jobB. wanted to refresh after 26 years’ workC. had a desire for travellingD. became interested in historical research67. The phrase “sleeping giant” (in 2nd paragraph) indicates that ________.A. it’s too early for people to accept the conception of gap yearB. the effect of gap year policy remains to be seenC. it’s difficult to foresee the gap year marketD. more American people will accept the gap year policy68. What’s George Garritan’s attitude toward the “gap year”?A. Positive.B. DoubtfulC. Uninterested.D. Uncertain.69. What’s the passage mainly about?A. How an adult plans a mid-career gap year.B. Why a gap year is worthwhile for adults.C. Whether a gap year is popular with adults.D. Why a gap year is challenging for individuals.(B)Submitting Assignment OnlineIn order to upload an assignment to the system properly, you must save the assignment using one of the following applications: Microsoft Word, Corel WordPerfect, or Microsoft Excel.After you complete an assignment, it is important to save your work. This ensures that assignment being uploaded to the system is the most updated version. Your word processing program may attempt to save the assignment to a folder on your computer. We recommend creating a new folder, named after your course, in a location that is easy to remember, such as “My Documents.”File Name RequirementsSelect a file name for the assignment that is easy to remember. The file name must NOT contain spaces. Any spaces used in the file name will prevent the file from uploading to the system. File names using the extensions .rtf, .html, .zip, .jpg, or .exe are NOT allowed.Assignment Upload ProcedureWhen the file is ready to upload, follow these steps:1. Sign in the system.2. Enter your address information and click the CONTINUE button. You will be routed to the “Directions” screen.3. Review the directions and click the CO NTINUE button. You will be routed to the “Special Assignment Upload” screen.4. Click the SEARCH button. The “Choose File” window pops up.5. Find the location on your computer where you saved your assignment, and select the file.After you have selected the file, click the UPLOAD button to upload your assignment to the system. Assignment Submission DatesAssignments must be submitted by midnight on the specified due date. Submit your assignment on time so that it reaches the system on or before the due date. No late assignments will be accepted or marked. Assignments delivered after the due date will not be assessed and will be failed. Please manage your time carefully as family and work demands will not be accepted as excuses for late or non-submissions. Tutors and administrators do not have the authority to grant extensions.70. Which of the following file names is acceptable for submitting assignment?A. research paper.docB. research paper.pdfC. researchpaper.docD. researchpaper.rtf71. Students are advised to save an assignment to a specific folder in order to ________.A. sign in the systemB. remember where the document isC. choose the appropriate applicationD. remember the document name quickly72. The phrase “pops up” in the passage probably means “________”.A. appearsB. eliminatesC. scansD. browses73. If you summit your assignment after the due time, you ________.A. can have a second chanceB. should ask a tutor for helpC. may apply for an extensionD. will get a fail for the workEven in a weak job market, the old college try isn’t the answer for everyone. A briefing paper from the Brookings Institution warns that “we may have overdone the message” on college, senior fellow Isabel Sawhill said.“We’ve been telling students and their families for years that college is the only way to succeed in the economy and of course there’s a lot of truth to that,” Ms. Sawhill said. “On average it does pay off… But if you load up on a whole lot of student deb t and then you don’t graduate, that is a very bad situation.”One comment that people often repeat among the years of slow job growth has been the value of education for landing a job and advancing in a career. April’s national unemployment rate stood at 7.5%, according to the Labor Department. The unemployment rate for high-school graduates over 25 years old who hadn’t attended college was 7.4%, compared with 3.9% for those with a bachelor’s degree or more education. The difference is even bigger among those aged 16-24. The jobless rate for those with only a high school diploma in that age group is about 20%. At the same time, recent research by Canadian economists cautions that a college degree is no guarantee of promising employment.Ms. Sawhill pointed out that among the aspects that affect the value of a college education is the field of one’s major: Students in engineering or other sciences end up earning more than ones who major in the arts or education. The cost of tuition and the availability of financial aid are other considerations, with public institutions generally a better financial bargain than private ones.She suggested two ways for improving the situation: increasing vocational-technical training programs and taking a page from Europe’s fo cus on early education rather than post-secondary learning. “The European countries put a little more attention to getting people prepared in the primary grades,” she said. “Then they have a higher bar for whoever goes to college—but once you get into coll ege, you’re more likely to be highly subsidized (资助).”She also is a supporter of technical training—to teach students how to be plumbers, welders and computer programmers—because “employers are desperate” for workers with these skills.74. According to the passage, people usually think that ________.A. the cost of technical schooling is a problemB. one will not succeed without a college degreeC. technical skills are most important for landing a jobD. there is an increased competition in getting into a college75. The underlined part “taking a page from” probably means “ ________ ”A. revisingB. promotingC. definingD. adopting76. What can we infer from the passage?A. Public institutions charge more for education.B. European universities are stricter with students.C. Students with certain skills are in great demand.D. Canadian students prefer to major in engineering.77. Ms. Sawhill may probably agree that ________.A. too much stress has been put on the value of college degreesB. technical training is more important than college educationC. a college degree will ensure promising employmentD. it’s easier for art students to find favorite jobs41. E 42. B 43. I 44. K 45. G 46. D 47. J 48. A 49. C 50. F 51. C 52. A 53. D 54. A 55. B 56. D 57. C 58. A 59. B 60. C61. D 62. B 63. C 64. D 65. A 66. B 67. D 68. A 69.B 70. C 71. B 72. A 73. D 74. B 75. D 76. C 77. A。
雅思阅读实战练习1 General Training Reading
=>
海外英语
特别策划
! 出国 雅思 &
!" #$ %&’ (! )!* +%, !& *-- ./01 23/4 5/236 78 9-366 6 :3;<5<;/--0 6= /=3> ? =@32A <63B <9 ;-8 >3 />C<6 6<?9 ;@ /2D36 = ? =@3 /= =2/;= <? 96 E 6 @?A 6 /9 > 3F@<1 <= 6 A3 G<6<=H I/90 58 -- >/0 6 ;39 <; =?8 26 /23 /;;?C :/9<3> 10 / 5 8--0 =2/<9 3> ! 9D-<6@ +? 82<6 = J? /2> ! J-83 J /> D3 " D8<>3 ?2 -? ;/3F :32<39;3> >2<G32 K D8 <>3H & ?C3 ./01 23/4 6 <9 ;-8 >3 -89 ;@ ?2 /5 =329? ?9 =3/H # ?C :/23 ? 82 /> C<66 <? 9 <9;-86 <G3 5/236 /9> 633 @ ?A C8 ;@ 0? 8 6 /G3H +@3 ;@ 3/:36= <6 9? = 9 3;36 6/2<-0 =@ 3 1 36= /9> G/-83 5?2 =@3 -39 D=@ ? 5 : <;4 ! 8: 2? 8=36 /9> 23>8;3 Q? 82930 = <C 36 5? 2 =@3 C/Q?2<=0 ? 5 : /6639 D326 H N@ /= = <C 3 >? A 3 D3= 1/;4T * 9 /::2? F<C/=3 23=829 =<C3 <6 6@ ?A 9 5 ?2 3/;@ 3F;826 <? 9H + @3 = <C 36 6@? A 9 632G3 /6 / D8<>3E 1 8= 2?/> ;?9> <=<?96 ;/9 6? C3=<C36 ;/86 3 > 3-/0H ’5 0? 82 /22<G/A<-- 1 3 -/=32 = @/9 /> G32= <6 3>E 0?82 >2<G32 A <-- =20 =? /--?A 5 ?2 / = 3-3: @?9 3 ;/-- >8 2<9 D =@ 3 23=829 Q?829 30H N @323 ;/9 ’ 1?/2> =@ 3 ;?/;@ T
雅思阅读练习题(打印版)
雅思阅读练习题（打印版）题目一：环境变化对生物多样性的影响问题：1. 环境变化对生物种群的总体影响是什么？2. 为什么某些物种能够适应环境变化而其他物种则不能？3. 人类活动如何影响生物多样性？4. 保护生物多样性的措施有哪些？题目二：教育对个人发展的重要性问题：1. 教育如何影响个人的职业发展？2. 教育对于社会经济发展的作用是什么？3. 为什么终身学习是现代社会的一个重要趋势？4. 教育不平等问题如何解决？题目三：城市化进程中的挑战问题：1. 城市化给环境带来了哪些挑战？2. 城市化如何影响社会结构？3. 城市化进程中，政府应如何平衡经济发展与居民生活质量？4. 城市化对农村地区的影响有哪些？题目四：健康生活方式的重要性问题：1. 健康生活方式对于预防疾病的作用是什么？2. 为什么运动是健康生活方式的重要组成部分？3. 健康饮食的重要性体现在哪些方面？4. 如何克服不良生活习惯，培养健康的生活方式？题目五：科技在教育中的应用问题：1. 科技如何改变传统的教育模式？2. 在线教育与传统教育相比有哪些优势和劣势？3. 科技在教育中应用的挑战有哪些？4. 如何确保科技在教育中的有效应用？题目六：气候变化的全球影响问题：1. 气候变化对全球经济的潜在影响是什么？2. 气候变化如何影响农业和粮食安全？3. 应对气候变化的国际合作现状如何？4. 个人和社区如何参与到应对气候变化的行动中？题目七：社交媒体对人际关系的影响问题：1. 社交媒体如何改变人们的交流方式？2. 社交媒体对青少年心理健康的影响是什么？3. 社交媒体在社会运动中的作用有哪些？4. 如何平衡社交媒体的使用与现实生活的联系？题目八：旅游业对经济和文化的影响问题：1. 旅游业对当地经济的促进作用是什么？2. 旅游业如何影响文化遗产的保护？3. 旅游业对环境的负面影响有哪些？4. 可持续旅游的概念及其重要性是什么？请根据以上题目进行阅读练习，注意理解文章主旨，掌握细节信息，并能够回答相关问题。
如何提高雅思阅读能力
如何提高雅思阅读能力雅思考试是国际留学生最常用的英语水平测试方式，包括口语、听力、阅读和写作四个部分。
其中，阅读部分是拿到高分最为困难的一个。
许多人会认为只有增加词汇量才能够提高阅读能力，但实际上阅读能力的提高是一个长期的积累过程。
本文将从多个方面细说如何提高雅思阅读能力。
一、阅读速度提高阅读速度是提高雅思阅读能力的重要方法。
在雅思考试中，考生需要在限时内读完很多篇文章，并做出反应。
如果阅读速度过慢，可能会导致不能完成考卷，甚至时间到了还有许多题目没做。
如何提高阅读速度呢？你可以通过练习阅读速度训练软件，如“Speed Reading”，进行反复的练习。
同时，为了提高阅读速度，需要加强单词记忆能力和理解能力，因为很多单词的意思对于理解整个文章很有帮助。
二、阅读技巧学习阅读技巧也是提高雅思阅读能力的重要方法。
在阅读文章时，考生应该学会使用草图、摘要和笔记等方法来记录文章的关键信息和理解，以帮助自己更快、更准确地回答问题。
在做题时，一个好方法是先阅读题目，然后再阅读文章，这样就能更容易找到有用的信息。
同时，注意文章中的转折点和关键词，并学会在阅读时注意题目中的时间和空间要求等细节，这也是提高阅读能力的关键。
三、阅读材料选择阅读材料也是提高雅思阅读能力的重要方法。
在备考过程中，考生需要阅读各种类型的文章，而不仅仅是相关的考试材料。
这样可以帮助他们熟悉不同类型的写作风格和语言表达习惯。
当然，为了避免阅读材料过于“难”的情况，学生可以逐渐提高自己的难度水平。
因此，在练习阅读时，需要选择一些知识面比较广，题目不会过于复杂的阅读材料，为后面的高难度材料铺垫。
四、多做模考要提高雅思阅读能力，需要多做模拟测试，学会如何管理时间和给出恰当的答案。
在开始每次练习前，先设置一定的时间限制，在这最短时间内尽可能阅读完所有文章和回答所有问题，以模拟考试的真实情况。
这样就可以训练自己的思维和决策能力，在实际考试中更快更准地完成试卷。
雅思英语阅读练习题及答案
雅思英语阅读练习题及答案：第一篇内容摘要：The failure of a high-profile cholesterol drug has thrown a spotlight on the complicated machinery that regulates cholesterol levels.★Why did a promising heart drug fail?Doomed drug highlights complications of meddling with cholesterol.1. The failure of a high-profile cholesterol drug has thrown a spotlight on the complicated machinery that regulates cholesterol levels. But many researchers remain confident that drugs to boost levels of 'good' cholesterol are still one of the most promising means to combat spiralling heart disease.2. Drug company Pfizer announced on 2 December that it was cancelling all clinical trials of torcetrapib, a drug designed to raise heart-protective high-density lipoproteins (HDLs). In a trial of 15000 patients, a safety board found that more people died or suffered cardiovascular problems after taking the drug plus a cholesterol-lowering statin than those in a control group who took the statin alone.3. The news came as a kick in the teeth to many cardiologists because earlier tests in animals and people suggested it would lower rates of cardiovascular disease. "There have been no red flags to my knowledge," says John Chapman, a specialist in lipoproteins and atherosclerosis at the National Institute for Health and Medical Research (INSERM) in Paris who has also studied torcetrapib. "This cancellation came as a complete shock."4. Torcetrapib is one of the most advanced of a new breed of drugs designed to raise levels of HDLs, which ferry cholesterol out of artery-clogging plaques to the liver for removal from the body. Specifically, torcetrapib blocks a protein called cholesterol ester transfer protein (CETP), which normally transfers the cholesterol from high-density lipoproteins to low density, plaque-promoting ones. Statins, in contrast, mainly work by lowering the 'bad' low-density lipoproteins.Under pressure5. Researchers are now trying to work out why and how the drug backfired, something that will not become clear until the clinical details are released by Pfizer. One hint lies in evidence from earlier trials that it slightly raises blood pressure in some patients. It was thought that this mild problem would be offset by the heart benefits of the drug. But it is possible that it actually proved fatal in some patients who already suffered high blood pressure. If blood pressure is the explanation, it would actually be good news for drug developers because it suggests that the problems are specific to this compound. Other prototype drugs that are being developed to block CETP work in a slightly different way and might not suffer the same downfall.6. But it is also possible that the whole idea of blocking CETP is flawed, says Moti Kashyap, who directs atherosclerosis research at the VA Medical Center in Long Beach, California. When HDLs excrete cholesterol in the liver, they actually rely on LDLs for part of this process. So inhibiting CETP, which prevents the transfer of cholesterol from HDL to LDL, might actually cause an abnormal and irreversibleaccumulation of cholesterol in the body. "You're blocking a physiologic mechanism to eliminate cholesterol and effectively constipating the pathway," says Kashyap.Going up7. Most researchers remain confident that elevating high density lipoproteins levels by one means or another is one of the best routes for helping heart disease patients. But HDLs are complex and not entirely understood. One approved drug, called niacin, is known to both raise HDL and reduce cardiovascular risk but also causes an unpleasant sensation of heat and tingling. Researchers are exploring whether they can bypass this side effect and whether niacin can lower disease risk more than statins alone. Scientists are also working on several other means to bump up high-density lipoproteins by, for example, introducing synthetic HDLs. "The only thing we know is dead in the water is torcetrapib, not the whole idea of raising HDL," says Michael Miller, director of preventive cardiology at the University of Maryland Medical Center, Baltimore.(613 words nature)Questions 1-7This passage has 7 paragraphs 1-7.Choose the correct heading for each paragraph from the list of headings below. Write the correct number i-ix in boxes 1-7 on your answer sheet.List of Headingsi. How does torcetrapib work?ii. Contradictory result prior to the current trialiii. One failure may possibly bring about future successiv. The failure doesn’t lead to total loss of confidenc ev. It is the right route to followvi. Why it’s stoppedvii. They may combine and theoretically produce ideal resultviii. What’s wrong with the drugix. It might be wrong at the first placeExample answerParagraph 1 iv1． Paragraph 2 vi2． Paragraph 3 ii3． Paragraph 4 vii4． Paragraph 5 ix5． Paragraph 6 viii6． Paragraph 7 ivQuestions 7-13Match torcetrapib，HDLs，statin and CETP with their functions （Questions 8-13）.. Write the correct letter A, B, C or D in boxes 8-13 on your answer sheet.NB You may use any letter more than once.7．It has been administered to over 10,000 subjects in a clinical trial.8．It could help rid human body of cholesterol.9．Researchers are yet to find more about it.10. It was used to reduce the level of cholesterol.11. According to Kashyap, it might lead to unwanted result if it’s blocked.12. It produced contradictory results in different trials.13. It could inhibit LDLs.List of choicesA. TorcetrapicB. HDLSC. StatinD. CETP(by Zhou Hong)Suggested Answers and Explanations1． vi2． ii3． vii 本段介绍了torcetrapib和statin的治病原理，但是同时短语“in contrast”与之前第二段后半段的内容呼应，暗示了这两种药在理论上能相辅相成，是理想的搭配。
雅思阅读考试模拟试练习题及答案解析新
雅思阅读考试模拟试练习题及答案解析盼望以下内容能够对大家的雅思备考有所关心!更多雅思报名的最新消息，最专业的雅思备考资料，我将为大家发布。
Time to cool itFrom The Economist print edition1 REFRIGERATORS are the epitome of clunky technology: solid, reliable and just a little bit dull. They have not changed much over the past century, but then they have not needed to. They are based on a robust and effective idea--draw heat from the thing you want to cool by evaporating a liquid next to it, and then dump that heat by pumping the vapour elsewhere and condensing it. This method of pumping heat from one place to another served mankind well when refrigerators' main jobs were preserving food and, as air conditioners, cooling buildings. Today's high-tech world, however, demands high-tech refrigeration. Heat pumps are no longer up to the job. The search is on for something to replace them.2 One set of candidates are known as paraelectric materials. These act like batteries when they undergo a temperature change: attach electrodes to them and they generate a current. This effect is used in infra-red cameras. An array of tiny pieces of paraelectric material can sense the heat radiated by, for example, a person, and the pattern of the array's electrical outputs can then be used to construct an image. But until recently no one had bothered much with the inverse of this process. That inverse exists, however. Apply an appropriate current to a paraelectric material and it will cool down.3 Someone who is looking at this inverse effect is Alex Mischenko, of Cambridge University. Using commercially available paraelectric film,he and his colleagues have generated temperature drops five times bigger than any previously recorded. That may be enough to change the phenomenon from a laboratory curiosity to something with commercial applications.4 As to what those applications might be, Dr Mischenko is still a little hazy. He has, nevertheless, set up a company to pursue them. He foresees putting his discovery to use in more efficient domestic fridges and air conditioners. The real money, though, may be in cooling computers.5 Gadgets containing microprocessors have been getting hotter for a long time. One consequence of Moore's Law, which describes the doubling of the number of transistors on a chip every 18 months, is that the amount of heat produced doubles as well. In fact, it more than doubles, because besides increasing in number, the components are getting faster. Heat is released every time a logical operation is performed inside a microprocessor, so the faster the processor is, the more heat it generates. Doubling the frequency quadruples the heat output. And the frequency has doubled a lot. The first Pentium chips sold by Dr Moore's company, Intel, in 1993, ran at 60m cycles a second. The Pentium 4--the last "single-core" desktop processor--clocked up 3.2 billion cycles a second.6 Disposing of this heat is a big obstruction to further miniaturisation and higher speeds. The innards of a desktop computer commonly hit 80℃. At 85℃, they stop working. Tweaking the processor's heat sinks (copper or aluminium boxes designed to radiate heat away) has reached its limit. So has tweaking the fans that circulate air over those heat sinks. And the idea of shifting from single-core processors to systems that divided processing power between first two, and then four, subunits, in order to spread the thermal load, also seems to have the endof the road in sight.7 One way out of this may be a second curious physicalphenomenon, the thermoelectric effect. Like paraelectric materials, this generates electricity from a heat source and produces cooling from an electrical source. Unlike paraelectrics, a significant body of researchers is already working on it.8 The trick to a good thermoelectric material is a crystal structure in which electrons can flow freely, but the path of phonons--heat-carrying vibrations that are larger than electrons--is constantly interrupted. In practice, this trick is hard to pull off, and thermoelectric materials are thus less efficient than paraelectric ones (or, at least, than those examined by Dr Mischenko). Nevertheless, Rama Venkatasubramanian, of Nextreme Thermal Solutions in North Carolina, claims to have made thermoelectric refrigerators that can sit on the back of computer chips and cool hotspots by 10℃. Ali Shakouri, of the University of California, Santa Cruz, says his are even smaller--so small that they can go inside the chip.9 The last word in computer cooling, though, may go to a system even less techy than a heat pump--a miniature version of a car radiator. Last year Apple launched a personal computer that is cooled by liquid that is pumped through little channels in the processor, and thence to a radiator, where it gives up its heat to the atmosphere. To improve on this, IBM's research laboratory in Zurich is experimenting with tiny jets that stir the liquid up and thus make sure all of it eventually touches the outside of the channel--the part where the heat exchange takes place. In the future, therefore, a combination of microchannels and either thermoelectrics or paraelectrics might cool computers. The old, as it were, hand in hand with the new.(830 words)Questions 1-5Complete each of the following statements with the scientist or company name from the box below.Write the appropriate letters A-F in boxes 1-5 on your answer sheet.A. AppleB. IBMC. IntelD. Alex MischenkoE. Ali ShakouriF. Rama Venkatasubramanian1. ...and his research group use paraelectric film available from the market to produce cooling.2. ...sold microprocessors running at 60m cycles a second in 1993.3. ...says that he has made refrigerators which can cool the hotspots of computer chips by 10℃.4. ...claims to have made a refrigerator small enough to be built intoa computer chip.5. ...attempts to produce better cooling in personal computers by stirring up liquid with tiny jets to make sure maximum heat exchange.Questions 6-9Do the following statements agree with the information given in the reading passage?In boxes 6-9 on your answer sheet writeTRUE if the statement is true according to the passageFALSE if the statement is false according to the passageNOT GIVEN if the information is not given in the passage6. Paraelectric materials can generate a current when electrodes are attached to them.7. Dr. Mischenko has successfully applied his laboratory discovery to manufacturing more efficient referigerators.8. Doubling the frequency of logical operations inside a microprocessor doubles the heat output.9. IBM will achieve better computer cooling by combining microchannels with paraelectrics.Question 10Choose the appropriate letters A-D and write them in box 10 on your answer sheet.10. Which method of disposing heat in computers may have a bright prospect?A. Tweaking the processors?heat sinks.B. Tweaking the fans that circulate air over the processor抯heat sinks.C. Shifting from single-core processors to systems of subunits.D. None of the above.Questions 11-14Complete the notes below.Choose one suitable word from the Reading Passage above for each answer.Write your answers in boxes 11-14 on your answer sheet.Traditional refrigerators use...11...pumps to drop temperature. At present, scientists are searching for other methods to produce refrigeration, especially in computer microprocessors....12...materials have been tried to generate temperature drops five times bigger than any previously recorded. ...13...effect has also been adopted by many researchers to cool hotspots in computers. A miniature version of acar ...14... may also be a system to realize ideal computer cooling in the future.Key and Explanations:1. DSee Paragraph 3: ...Alex Mischenko, of Cambridge University. Using commercially available paraelectric film, he and his colleagues have generated temperature drops...2. CSee Paragraph 5: The first Pentium chips sold by Dr Moore's company, Intel, in 1993, ran at 60m cycles a second.3. FSee Paragraph 8: ...Rama Venkatasubramanian, of Nextreme Thermal Solutions in North Carolina, claims to have made thermoelectric refrigerators that can sit on the back of computer chips and cool hotspots by 10℃.4. ESee Paragraph 8: Ali Shakouri, of the University of California, Santa Cruz, says his are even smaller梥o small that they can go inside the chip.5. BSee Paragraph 9: To improve on this, IBM's research laboratory in Zurich is experimenting with tiny jets that stir the liquid up and thus make sure all of it eventually touches the outside of the channel--the part where the heat exchange takes place.6. TRUESee Paragraph 2: ...paraelectric materials. These act like batteries when they undergo a temperature change: attach electrodes to them and they generate a current.7. FALSESee Paragraph 3 (That may be enough to change the phenomenon from a laboratory curiosity to something with commercial applications. ) and Paragraph 4 (As to what those applications might be, Dr Mischenko is still a little hazy. He has, nevertheless, set up a company to pursue them. He foresees putting his discovery to use in more efficient domestic fridges?8. FALSESee Paragraph 5: Heat is released every time a logical operation is performed inside a microprocessor, so the faster the processor is, the more heat it generates. Doubling the frequency quadruples the heat output.9. NOT GIVENSee Paragraph 9: In the future, therefore, a combination of microchannels and either thermoelectrics or paraelectrics might cool computers.10. DSee Paragraph 6: Tweaking the processor's heat sinks ?has reached its limit. So has tweaking the fans that circulate air over those heat sinks. And the idea of shifting from single-core processors to systems?also seems to have the end of the road in sight.11. heatSee Paragraph 1: Today's high-tech world, however, demandshigh-tech refrigeration. Heat pumps are no longer up to the job. The search is on for something to replace them.12. paraelectricSee Paragraph 3: Using commercially available paraelectric film, he and his colleagues have generated temperature drops five times bigger than any previously recorded.13. thermoelectricSee Paragraph 7: ...the thermoelectric effect. Like paraelectricmaterials, this generates electricity from a heat source and produces cooling from an electrical source. Unlike paraelectrics, a significant body of researchers is already working on it.14. radiatorSee Paragraph 9: The last word in computer cooling, though, may go to a system even less techy than a heat pump--a miniature version of a car radiator.文档内容到此结束，欢迎大家下载、修改、丰富并分享给更多有需要的人。
雅思阅读试题练习与答案全解析
雅思阅读试题练习与答案全解析一、练习题阅读Passage 1：阅读以下段落，回答问题1-5。
1. What is the main topic of the passage?A. The advantages of the Internet.B. The disadvantages of the Internet.C. The impact of the Internet on society.D. The history of the Internet.2. According to the passage, which of the following is a problem caused by the widespread adoption of the Internet?A. Environmental pollution.B. Privacy issues.C. Economic growth.D. Educational improvement.3. Why does the Internet lead to social isolation?A.因为它改变了人们的交流方式B.因为它使人们更容易获取信息C.因为它促进了全球连接D.因为它提供了更多的娱乐方式4. Which of the following is NOT mentioned in the passage?A. Privacy issues.B. The spread of misinformation.C. Social isolation.D. Education inequality.5. In the author's opinion, how should people use the Internet responsibly?A. They should limit their online activities to protect their privacy.B. They should only consume information from trusted sources.C. They should spend more time on social media to stay connected.D. They should use the Internet as an educational tool to enhance their knowledge.阅读Passage 2：阅读以下段落，回答问题6-10。