2023年剑桥雅思8第三套试题阅读部分PASSAGE3.docx

剑桥雅思8-第三套试题-阅读部分-PASSAGE 3-阅读真题原文部分:READING PASSAGE 3 You should spend about 20 minutes on Questions 2740, which are based on Reading Passage 3 on the following pages. Questions 27-32Reading Passage 3 has seven paragraphs, A-G. Choose the correct heading for paragraphs B-G from the list of headings below. Write the correct number, i-x, in boxes 27-32 on your answer sheet.List of Headings i The biological clock ii Why dying is beneficial iii The ageing process of men and women iv Prolonging your life v Limitations of life span vi Modes of development of different species vii A stable life span despite improvements viii Energy consumption ix Fundamental differences in ageing of objects and organisms x Repair of genetic material Example Answer Paragraph A v 27 Paragraph B 28 Paragraph C 29 Paragraph D 30 Paragraph E 31 Paragraph F 32 Paragraph GHOW DOES THE BIOLOGICAL CLOCK TICK?A Our life span is restricted. Everyone accepts this as biologically obvious. Nothing lives for ever! However, in this statement we think of artificially produced, technical objects, products which are subjected to natural wear and tear during use. This leads to the result that at some time or other the object stops working and is unusable (death in the biological sense). But are the wear and tear and loss of function of technical objects and the death of living organisms really similar or comparable? B Our dead products are static, closed systems. It is always the basic material which constitutes the object and which, in the natural course of things, is worn down and becomes older. Ageing in this case must occur according to the laws of physical chemistry and of thermodynamics. Although the same law holds for a living organism, the result of this law is not inexorable in the same way. At least as long as a biological system has the ability to renew itself it could actually become older without ageing; an organism is an open, dynamic system through which new material continuously flows. Destruction of old material and formation of new material are thus in permanent dynamic equilibrium. The material of which the organism is formed changes continuously. Thus our bodies continuously exchange old substance for new, just like a spring which more or less maintains its form and movement, but in which the water molecules are always different. C Thus ageing and death should not be seen as inevitable, particularly as the organism possesses many mechanisms for repair. It is not, in principle, necessary for a biological system to age and die. Nevertheless, a restricted life span, ageing, and then death are basic characteristics of life. The reason for this is easy to recognise: in nature, the existent organisms either adapt or are regularly replaced by new types. Because of changes in the genetic material (mutations) these have new characteristics and in the course of their individual lives they are tested for optimal or better adaptation to the environmental conditions. Immortality would disturb this system - it needs room for new and better life. This is the basic problem of evolution. D Every organism has a life span which is highly characteristic. There are striking differences in life span between different species, but within one species the parameter is relatively constant. For example, the average duration of human life has hardly changed in thousands of years. Although more and more people attain an advanced age as a result of developments in medical care and better nutrition, the characteristic upper limit for most remains 80 years. A further argument against the simple wear and tear theory is the observation that the time within which organisms age lies between a few days (even a few hours for unicellular organisms) and several thousand years, as with mammoth trees. E If a life span is a genetically determined biological characteristic, it is logically necessary to propose the existence of an internal clock, which in some way measures and controls the ageing process and which finally determines death as the last step in a fixed programme. Like the life span, the metabolic rate has for different organisms a fixed mathematical relationship to the body mass. In comparison to the life span this relationship is inverted: the larger the organism the lower its metabolic rate. Again this relationship is valid not only for birds, but also, similarly on average within the systematic unit, for all other organisms (plants, animals, unicellular organisms). F Animals which behave frugally with energy become particularly old, for example, crocodiles and tortoises. Parrots and birds of prey are often held chained up. Thus they are not able to experience life and so they attain a high life span in captivity. Animals which save energy by hibernation or lethargy (e. g. bats or hedgehogs) live much longer than those which are always active. The metabolic rate of mice can be reduced by a very low consumption of food (hunger diet). They then may live twice as long as their well fed comrades. Women become distinctly (about 10 per cent) older than men. If you examine the metabolic rates of the two sexes you establish that the higher male metabolic rate roughly accounts for the lower male life span. That means that they live life energetically - more intensively, but not for as long. G It follows from the above that sparing use of energy reserves should tend to extend life. Extreme high performance sports may lead to optimal cardiovascular performance, but they quite certainly do not prolong life. Relaxation lowers metabolic rate, as does adequate sleep and in general an equable and balanced personality. Each of us can develop his or her own energy saving programme with a little self-observation, critical self-control and, above all, logical consistency. Experience will show that to live in this way not only increases the life span but is also very healthy. This final aspect should not be forgotten. Questions 33-36Complete the notes below. Choose NO MORE THAN TWO WORDS from the passage for each answer. Write your answers in boxes 33-36 on your answer sheet. Objects age in accordance with principles of 33 and of 34 Through mutations, organisms can 35 better to the environment 36 would pose a serious problem for the theory of evolution Questions 37-40Do the following statements agree with the views of the writer in Reading Passage 3? In boxes 37-40 on your answer sheet, write YES if the statement agrees with the views of the writer NO if the statement contradicts the views of the writer NOT GIVEN if it is impossible to say what the writer thinks about this 37 The wear and tear theory applies to both artificial objects and biological systems. 38 In principle, it is possible for a biological system to become older without ageing. 39 Within seven years, about 90 per cent of a human body is replaced as new. 40 Conserving energy may help to extend a humans life.READING PASSAGE 3篇章结构 体裁 说明文 主题 生物钟如何工作? 结构 A段：万物都有损耗B段：物品变旧与生物衰老的本质区别C段：死亡的原理D段：人类的平均寿命大体恒定E段：生物钟控制寿命F段：能量消耗是关键G段：节约能耗可以延年益寿解题地图难度系数：解题顺序：LIST OF HEADINGSNOTE COMPLETIONYES/NO/NOT GIVEN 友情提醒：本文的YES/NO/NOTGIVEN可以运用题干中出现的以下表达来猜测答案，一定要记住这些表达一般是选YES或TRUE的标志：possible/probable/likely seem to/appear to may/could / can not all/not always/not necessarily 必背词汇1. life span寿命Captivity vastly reduces the life span of whales. 圈养大大缩短了鲸鱼的寿命。The life span of human being has been considerably prolonged thanks to the advances in medicine. 由于医学的进步，人类的寿命被大大延长了。2. artificial adj. 人工的(adv. artificially)artificial light人造光artificial fertilizer化肥an artificial smile一抹假笑Food prices are being kept artificially low. 食品价格被人为控制得很低。3. wear and tear磨损Check the equipment for wear and tear. 看看机器的磨损情况。4. static adj. 静止的，静态的Economists predict that house prices will remain static for a long period. 经济学家预测房价会在很长一段时间内保持稳定。A static image appeared on the screen. 屏幕上出现了一幅静态图像。5. inexorable adj. 无情的，不可阻挡的Nothing stops the inexorable decline of Britains manufacturing industry. 什么也阻止不了英国制造业的无情衰退。The police found their precautions useless before the seemingly inexorable rise in crime. 犯罪率疯狂增长，警察发现他们的防止措施不起作用。6. equilibrium n. 均衡：安静The government is anxious not to upset the economic equilibrium. 政府渴望着不去打破经济的平衡。She struggled to recover her equilibrium. 她努力想恢复安静。7. mechanism n. 机制，原理 When a person is ill, the bodys natural defense mechanisms come into operation. 当人生病时，身体的天然防御系统就开始运作。The mechanism of the brain is yet to be further explored. 大脑机制尚有待进一步探究。8. existent adj. 存在的In the existent circumstances，it is impossible. 在现有环境中，这是不也许的。They made an attempt to refine the existent system to make it more efficient. 他们努力尝试改善现存体系以使其更有效率。9. optimal adj. 最佳的，最抱负的They made comparisons between every possible choice in order to make the optimal choice. 他们对每个也许选项都进行了对比以便做出最佳选择。the optimal growth temperature最适合生长的温度10. parameter n. 参数，系数The inquiry has to stay within the parameters laid down by Congress. 调查必须在国会设定好的范围内展开。11. internal adj. 内部的，内在的，国内的We have no interest in interfering in the internal affairs of other countries. 我们无意干涉别国内政。Theres to be an internal inquiry into the whole affair. 针对整个事件将会进行内部调查。12. frugal adj. 节俭的，朴素的As children we were taught to be frugal and hard-working. 我们在孩提时被教导要勤俭节约，努力工作。He led a remarkably frugal existence. 他的生活极其俭朴。13. reserve n. 储备，储存Somehow Debbie maintained an inner reserve of strength. 不知怎地，Debbie身上蕴含着一种不知名的韧劲儿。We always keep some money in reserve, just in case. 我们总是会存一些钱以备不时之需。14. extend v.延伸，扩大The government has extended the ban on the import of beef until June. 政府将牛肉进口禁令延长到了六月。My dudes at the school extend beyond just teaching. 我在学校的职责不只是教书。认知词汇be subjected to 受到，遭受at some time or other迟早，某个时刻，总有一天comparable adj. 可比的closed adj. 不公开的，封闭的constitute v. 构成，组建wear down 磨损renew v. 更新，使更新dynamic adj. 动态的permanent adj. 永久的continuously adv. 连续不断地inevitable adj. 必然的adaptation n. 适应immortality n. 永生，不朽constant adj. 不变的，恒定的nutrition n. 营养，营养学genetically determined由基因决定的metabolic rate 代谢速率body mass 生物体inverted adj. 倒转的。反向的captivity n. 圈养，囚禁hibernation n. 冬眠lethargy n. 嗜睡，昏睡prolong v. 延长relaxation n. 放松self-observation n. 自我观测self-control n. 自我控制logical consistency 逻辑连贯性佳句赏析1. Although the same law holds for a living organism, the result of this law is not inexorable in the same way.参考译文：虽然相同的规律也合用于生物体，但并不会以同样的方式产生不可改变的结果。语言点：让步状语从句常用引导词：although，though，even if, even though。当有though和although时，后面的从句不能有but，但是though和yet可连用。例句：Although the wildlife kingdom has shrunk significantly，it is ridiculous to think that no space should be left for the wildlife in the new century. 虽然野生动植物的领地已大大缩小，但认为新世纪不应给野生动植物留有生存空间的想法非常荒唐。Though animal testing sounds cruel and barbaric，it has yet contributed to numerous medical breakthroughs. 虽然动物实验听起来残忍而野蛮，但它已帮助实现了无数医学突破。Even if animal welfare is a reasonable concern，talking of animal right is extreme. 虽然关注动物福利有道理，但是谈到动物“权利”就太极端了。2. Animals which save energy by hibernation or lethargy (e.g. bats or hedgehogs ) live much longer than those which are always active. The metabolic rate of mice can be reduced by a very low consumption of food ( hunger diet). They then may live twice as long as their well-fed comrades.参考译文：有些能通过冬眠或嗜睡来保存能量的动物(例如蝙蝠或刺猬)通常比那些总是很活跃的动物活得更长期。老鼠的代谢速率可以通过减少食物消耗量(饥饿饮食法)来减少，他们的寿命也许比那些平日吃饱喝足的同类寿命长一倍。语言点：比较状语从句常用引导词：asas(同级比较)，than(不同限度的比较)例句： Our future cities and habitats should be as advanced and comfortable as scientific and social advances allow them. 我们未来的城市和栖息地应当在科学和社会进步允许的情况下尽也许先进而舒适。Breeding animals in zoos is more successful in the sense of animal protection than leaving them in the wild. 从保护动物的意义上来说，在动物园中饲养动物比把它们留在野外更好。试题解析Questions 27-32题目类型：LISTOFHEADINGS 题目解析：一方面，考生应当忽略例题中已经选出的v项；接着，浏览所有的Headings，找出关键词。这道List of Headings题目比较难，很多段落需要通篇理解才干最终决定答案。i. 生物钟ii. 为什么死亡有益处iii. 男人和女人的衰老过程iv. 延长你的生命v. 寿命的极限vi. 不同物种的发展模式vii. 尽管有所提高，但寿命仍然恒定viii. 能量消耗ix. 物品变旧和生物体衰老之间的主线差异x. 基因物质的修复题号定位词文中相应点题目解析27fundamental differences，objects，organisms B段前半段：Our dead products are static，closed systems. It is always the basic material which constitutes the object and which，in the natural course of things. is worn down and becomes olderAlthough the same law holds for a living organism, the result of this law is not inexorable in the same way. 要想弄清楚这一段的意思，至少要阅读前半段，才干明白作者是在对object变旧的过程和生物体衰老的过程做对比。通过is not inexorable in the same way猜测出是相应答案中的fundamental differences。对的答案为ix。28dying，beneficial C段第三、四句：Nevertheless，a restricted fife span，ageing，and then death are basic characteristics of life. The reason for this is easy to recognise一方面在C段找到表达转折意义的副词nevertheless，一般段落大意都藏在转折词后面；接着发现the reason for this，这就可以相应选项ii中的why；接着读下去发现提到了死亡是必要的，immortality会扰乱整个生态系统，这样就可以进行选择了。对的答案是ii。29stable，despite improvements D段第二、四句：but within one species the parameter is relatively constant. Although more and more people attain an advanced age as a result of developments in medical care and better nutrition，the characteristic upper limit for most remains 80 years. 本段指出，每个生物体都有极具特色的寿命；不同物种之间的寿命有很大差别，但同一物种中，这个参数相对恒定，这就是选项vii中所提到的a stable life span；接下来的although则可以相应Heading中的despite，improvement相应句中的developments in medical core and better nutrition。这样就和Heading的意思完全吻合了。对的答案是i。30biological clock E段首句：it is logically necessary co propose the existence of an internal clock, which in some way measures and controls the ageing process and which finally determines death as the last step in a fixed programme. 本段首句中提到：假如寿命是一个由基因决定的生物特性，那么我们就有必要提出这样一个观点，那就是生物体内存在一个内部时钟。这是文章第一次提到生物钟这样一个概念。对的答案是i。31energy consumption F段第一、四句及末句：Animals which behavefrugallywith energyAnimals which save energy by hibernation or lethargyThat means that they live life energeticallymore intensively，but not for as long. 通读全段，感到几乎在每一句中都存在的energy一词向你呼喊：选我吧。这样的段落无法从某一句话中弄明白作者到底在讲什么，但是也没有必要过于精细地通读全段。只需要浮光掠影扫过全段，捡拾几个高频词，就可以猜测出段落大意。个别考生也许会选iii，由于他们只看到在该段中提到男、女新陈代谢比率的不同，但却没有注意到这一段除了提到男、女，还提到了乌龟、鳄鱼等，iii项并没有涵盖全段要表达的意思。对的答案是viii。32prolonging G段首句：It follows from the above that sparing use of energy reserves should tend to extend life