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发表于 2006-8-17 20:16:04
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张锦芯07新教程
U13 New Sciences and Technology
科普新知识
Finding the Most Effective and Economical Fuel for Cars
Reading Comprehension
(包括“答案与题解”)
Notes
课文参考译文
练习
●Cloze
●Reading Passages(包括“疑难长句翻译与注解”)
●Translation
●Writing(包括“审题指导”)
Finding the Most Effective and Economical Fuel for Cars
While some researchers concentrate on the car and improving its systems and materials, others focus on the fuel that feeds the car. On at least one occasion, car improvements and fuel refinements went hand in hand. When catalytic converters were developed, the petroleum industry had to make gasoline lead-free. Leaded gasoline produces emissions containing lead, which coats the metals in the converter, rendering them ineffective. Because lead has been linked to cancer and can cause nervous system damage in children, lead-free gasoline was an important development against automobile pollution.
Researchers continue to search for ways to make better gasoline. Refining crude oil to produce gasoline involves heating the oil and drawing off various types of hydrocarbons as they evaporate. Some hydrocarbons are lightweight molecules that evaporate easily. Others are heavier, have a tendency to form deposits and particulates, and may be cancer-causing.
Petroleum companies can create gasolines that pollute less by using more hydrocarbons from the middle of the weight spectrum—those that are neither very light nor very heavy. Refiners can also break down or “crack” some of the heavier hydrocarbons to yield lighter compounds. Some gasoline additives include oxygen atoms in their structure. This helps promote more complete fuel combustion.
Researchers are also investigating fuels other than gasoline. Methanol emits smaller quantities of pollutants normally associated with gasoline combustion. But it has less potential energy than does gasoline, and it is more difficult to ignite. Methanol also can corrode many of the metals. Finally, methanol produces a harmful compound that irritates the eyes, nose, and throat, and which is thought to cause cancer. On the positive side, methanol burns more completely than does gasoline, and when mixed with 15 percent gasoline to form a fuel called M-85, it achieves satisfactory starting performance. A “flexible fuel” engine can run on either gasoline or methanol or a combination of both. Special sensors determine the type of fuel in use and relay this information to the central computer system.
Natural gas is another abundant fuel that experts consider an alternative to gasoline. It is composed mainly of methane gas and is cheaper and much cleaner than gasoline. This fuel’s major drawback is that unlike gasoline and methanol, it is not available as a liquid at normal air temperatures and pressures. Natural gas must be carried in a pressurized tank, or, as a liquid, in an insulated tank—unfamiliar additions to a car’s design that consumers may reject. Refueling with natural gas could take up to several hours.
Some scientists are interested in hydrogen as the fuel of the future. Hydrogen burns much more cleanly than do other fuels and is easy to produce. But complex technical problems must be solved before it can be widely used in cars.
Electric vehicles are quiet and virtually emission-free. However, the batteries from which they draw energy usually contain harmful chemicals, which become pollutants when the batteries are disposed of. Today’s electric cars cannot go as far or as fast as gasoline-driven vehicles because the battery does not offer the same amount of energy as does gasoline combustion. Furthermore, the battery must be recharged regularly, and the energy to do this comes from power plants that are also a source of pollution. Nevertheless, electric vehicles are the likely choice for meeting zero-emission laws that have been established in some areas, such as California.
The ongoing search for ways to make cars cleaner poses a demanding challenge to engineers, as well as chemists, materials scientists, and technicians. The widespread research reflects our new heightened concerns for the environment along with our old desire to maintain the freedom of movement that the automobile has brought to the developed world.
1. It is implied in the first paragraph that refined fuel may not produce the desired result .
[A] without the improvement on the car itself
[B] without the addition of lead
[C] because it is still polluting
[D] when it is too expensive for drivers
2. Lead-free gasoline represented a leap in the search for cleaner fuel because .
[A] it is less harmful to health
[B] it makes the catalytic converter work more effectively
[C] it is nonpollutant to the environment
[D] it went hand in hand with car improvements
3. Which of the following fuels is the most effective in terms of the amount of energy it generates?
[A] The battery. [B] Gasoline.
[C] Methanol. [D] Natural gas.
4. Which of the following fuels is the cleanest?
[A] Gasoline. [B] Methanol.
[C] Hydrogen. [D] Natural Gas.
5. In their search for future fuels, scientists have always in mind the goal of finding .
[A] the most economical and easily-produced fuel
[B] the most extensively applicable fuel
[C] the fuel that gives cars the utmost performance
[D] a nonpolluting and the most effective fuel
答案与题解
1.[A]
本段第一、二句都提到了燃料的改进和汽车的改进必须同步,其他三句从反面说明了同步改进的必要性。
2.[A]
根据第一段,含铅汽油导致癌症,对孩子的神经系统有害,所以,无铅汽油在防止汽车废气污染上是一大进步。
3.[B]
参阅第四段第三句、第七段第三句。
4.[C]
参阅第六段第二句。
5.[D]
主要参阅文章最后一段。最后一段中提到对环境的关注,所谓关心环境,即不污染环境。另外,在讨论每一种燃料时,几乎都提到了它是否产生污染,是否有效、实用。
Notes
1. 第二段最后一句中particulates是“微粒”的意思。
2. 第三段第一句中weight spectrum是“重量谱”的意思。
3. 第五段第四句是一个简单主从复合句。 句架是Natural gas must be carried in...tank, or, ..., in an...tank—unfamiliar...design that...。 句中破折号后的内容是说明insulated tank的;that引导定语从句,修饰design。
4. 第七段第二句是一个简单主从复合句。 句架是..., the batteries from which...contain...chemicals, which...when...。句中from which引导定语从句, 修饰batteries; which引导非限制性定语从句修饰前面整个句子;when在非限制性定语从句中引导时间状语从句。
课文参考译文
为汽车找到最有效和最经济的燃料
虽然一些研究人员集中精力研究汽车并改进汽车系统和材料,但是其他人的研究重点放在汽车的燃料上。至少在一个场合,改进汽车和提炼燃料是同时进行的。在研制出催化转化器之后,石油工业必须使汽油变成无铅汽油。含铅汽油排放的废气中有铅,会使转化器中的金属涂上一层膜,导致这些金属失效。由于铅已与癌症联系起来并能引起儿童神经系统损伤,因此无铅汽油是针对汽车污染的一项重要发展。
研究人员继续寻找改善汽油的办法。提炼原油以生产汽油涉及给石油加热并在石油挥发过程中提取各种碳氢化合物。有一些碳氢化合物是容易挥发的轻量分子,其他碳氢化合物重一些,有形成沉积物和微粒的趋势,并可能引起癌症。
石油公司通过更多使用重量等级居中的碳氢化合物——既不是很轻也不是很重的碳氢化合物——就能创造出污染较少的汽油。提炼厂也能分解或“裂化”较重的碳氢化合物以产生较轻的化合物。一些汽油添加剂在其结构中含有氧原子,这有助于促使燃料燃烧更完全。
研究人员还在调查除汽油之外的其他燃料。甲醇排放的污染物数量较少,这些污染物通常与汽油燃烧有关。但是甲醇的潜能比汽油少,而且甲醇更难点燃。甲醇也能腐蚀许多金属。最后,甲醇产生一种刺激眼睛、鼻子和咽喉的有害化合物,被认为能引起癌症。从积极方面来说,甲醇比汽油燃烧得更完全,在与15%的汽油混合成一种叫M-85的燃料时,这种新燃料的启动性能令人满意。一种使用“灵活燃料”的引擎既能烧汽油也能烧甲醇,或者烧两种燃料的混合物。特殊传感器能决定使用哪一种燃料,并能把这个信息传达到中央电脑系统。
天然气是专家们认为能代替汽油的另一种储量丰富的燃料。天然气主要由甲烷构成,比汽油便宜,也比汽油清洁得多。这种燃料的主要缺点是,不像汽油和甲醇,天然气在正常的气温和气压下无法以液态存在。天然气必须装在压力罐中,或者液态时要装在绝缘罐中——这是消费者可能拒绝的汽车设计之外的陌生附加物。加注天然气可能需要几个小时的时间。
一些科学家对把氢气作为一种未来的燃料很感兴趣。氢燃烧比其他燃料燃烧都更清洁,而且容易生产。但是在氢气能广泛用于汽车之前,必须先解决复杂的技术问题。 电车安静,而且实际上不排放任何废气。但是,电车用以获取能源的电池通常含有有害的化学物质。在电池被抛弃后,这些化学物质就变成了污染物。由于电池供应的能量不如汽油燃烧产生的能量大,因此今天的电车不可能像汽油驱动的车辆跑得那样远或那样快。此外,电池必须经常充电,充电所需的能源来自发电厂,而发电厂本身也是污染源。尽管如此,在像加利福尼亚这样一些已制定零排放法的地区,电车是满足零排放法要求的可能选择。
设法使汽车更清洁的持续不断的探索是对工程师以及化学家、材料科学家和技师提出的严峻挑战。我们过去的愿望是维护汽车给我们发达的世界带来的行动自由。而目前这种广泛探索同我们过去的愿望一起,反映出我们对环境的强烈的新关注。
Ⅰ. Cloze
In 1975, tens of thousands of people were evacuated from Haicheng, in China, a few hours before a large earthquake struck the city. Western scientists regard earthquakes as 1 , and evacuations in anticipation such as this are 2 impossible. What gave the game 3 , according to the Chinese authorities, was the 4 behavior of animals such as rats, snakes, birds, cows and horses.
It could have been a lucky 5 . It seems unlikely that these animals could have detected underground “pre-shocks” that were 6 by the sensitive vibration-detecting equipment that 7 the world’s earthquake laboratories. But it is 8 . And the fact that many animal species behave queerly before other natural events, such as storms, and 9 they have the ability to detect others of their species 10 distances which the familiar human senses could not manage, is well 11 . Such observations have led some to 12 that these animals have some sense organ designed specifically to detect underground vibrations. What is more likely, 13 , is that they have an extra sense—a form of perception that people 14 . The best guess is that they can feel and understand vibrations that are 15 through the ground.
16 any of this really has implications 17 such things as earthquake prediction is, of course, highly 18 . But it is a reminder 19 the limitations of human senses can cause even competent scientists to overlook obvious 20 of inquiry. Absence of evidence, it should always be remembered, is not evidence of absence.
1.[A] incredible [B] unimaginable [C] unpredictable [D] indispensable
2.[A] therefore [B] nevertheless [C] otherwise [D] moreover
3.[A] in [B] up [C] off [D] away
4.[A] unique [B] strange [C] particular [D] alien
5.[A] event [B] opportunity [C] phenomenon [D] coincidence
6.[A] missed [B] picked [C] witnessed [D] omitted
7.[A] crowds [B] surrounds [C] scatters [D] gathers
8.[A] uncertain [B] natural [C] feasible [D] possible
9.[A] when [B] if [C] that [D] unless
10.[A] of [B] in [C] at [D] within
11.[A] performed [B] hypothesized [C] conducted [D] established
12.[A] refute [B] suggest [C] predict [D] verify
13.[A] hence [B] though [C] besides [D] therefore
14.[A] lack [B] need [C] seek [D] possess
15.[A] distributed [B] delivered [C] transmitted [D]dispatched
16.[A] So [B] Although [C] If [D] Whether
17.[A] for [B] to [C] by [D] in
18.[A] unreliable [B] documentary [C] speculative [D] imaginative
19.[A] that [B] when [C] so [D] because
20.[A] ranks [B] lines [C] traces [D] tracks
◎ Ⅱ. Reading Passages
Part A 阅读理解
★ Passage One
The need for solar electricity is clear. It is safe, ecologically sound, efficient, continuously available, and it has no moving parts. The basic problem with the use of solar photovoltaic devices is economics, but until recently very little progress had been made toward the development of low-cost photovoltaic devices. The larger part of research funds has been devoted to the study of single-crystal silicon solar cells, despite the evidence that this technique holds little promise. The reason for this pattern is understandable and historical. Crystalline silicon, however, is particularly unsuitable to terrestrial solar cells.
Crystalline silicon solar cells work well and are successfully used in the space program, where cost is not an issue. 1) While single crystal silicon has been proven in extraterrestrial use with efficiencies as high as 18 percent, and other more expensive and scarce materials can have even higher efficiencies, costs must be reduced by a factor of more than 100 to make them practical for commercial uses. Beside the fact that the starting crystalline silicon is expensive, 95 percent of it is wasted and does not appear in the final device. Recently, there have been some imaginative attempts to make polycrystalline and ribbon silicon which are lower in cost than high-quality single crystals; but to date the efficiencies of these apparently lower-cost materials have been unacceptably small. Moreover, these materials are cheaper only because of the introduction of disordering in crystalline semiconductors, and disorder degrades the efficiency of crystalline solar cells.
This difficulty can be avoided by preparing completely disordered or amorphous materials. Amorphous materials have disordered atomic structure as compared to crystalline materials: that is, they have only short-range order rather than the long-range periodicity of crystals. The advantages of amorphous solar cells are impressive. Crystalline silicon must be made 200 microns thick to absorb a sufficient amount of sunlight for efficient energy conversion, whereas only 1 micron of the proper amorphous materials is necessary. Crystalline silicon solar cells cost in excess of 100 per square foot, but amorphous films can be created at a cost of about 50 cents per square foot.
Although many scientists were aware of the very low cost of amorphous solar cells, they felt that they could never be manufactured with the efficiencies necessary to contribute significantly to the demand for electric power. This was based on a misconception about the feature which determines efficiency. 2) For example, it is not the conductivity of the material in the dark which is relevant, but only the photoconductivity, that is, the conductivity in the presence of sunlight. Already, solar cells with efficiencies well above 6 percent have been developed using amorphous materials, and further research will doubtlessly find even less costly amorphous materials with higher efficiencies.
1. Which of the following pairs of terms does the author regard as most nearly synonymous?
[A] Solar and extraterrestrial.
[B] Crystalline silicon and amorphous materials.
[C] Amorphous materials and higher efficiencies.
[D] Photovoltaic devices and solar cells.
2. The author is primarily concerned with .
[A] discussing the importance of solar energy
[B] explaining the function of solar cells
[C] presenting a history of research on energy sources
[D] describing a possible solution to the problem of the cost of photovoltaic cells
3. The author mentions recent attempts to make polycrystalline and ribbon silicon primarily in order to .
[A] minimize the importance of recent improvements in silicon solar cells
[B] demonstrate the superiority of amorphous materials over crystalline silicon
[C] explain why silicon solar cells have been the center of research
[D] contrast crystalline silicon with polycrystalline and ribbon silicon
4. The material in the passage could best be used in an argument for .
[A] discontinuing the space program
[B] increased funding for research on amorphous materials
[C] further study of the history of silicon crystals
[D] increased reliance on solar energy
5. The tone of the passage can best be described as .
[A] analytical and optimistic [B] biased and unprofessional
[C] critical and discouraged [D] hesitating and inconclusive
【疑难长句翻译与注解】
1. It is safe, ..., ..., ..., and...parts.
【译文】 太阳能发电安全、环保、有效、用之不竭,而且不需要太多设备。
【注解】 moving part指“运动机件”,即下一句提到的device。
2. The basic problem..., but...devices.
【译文】 使用太阳能光电设备的根本问题是经济问题,直到最近,在研制低成本的太阳能光电设备上,几乎没有取得什么进展。
【注解】 这里,economics不能理解为“经济学”,而应该根据下文理解为“制造光电设备的成本”。
3. The larger part..., despite...promise.
【译文】 大部分资金用于研究单晶硅太阳能电池,虽然证据表明这种技术的前景并不乐观。
【注解】 promise在这里的意思是“前景,前途”。
4. Crystalline silicon...issue.
【译文】 晶体硅太阳能电池在宇航项目上得到成功应用,因为在这类项目中,成本不是问题。
5. Beside the fact..., ...device.
【译文】 最初使用的晶体硅除了昂贵以外,硅中有95%的成分不能用于成品设备,造成了浪费。
【注解】 final device指“成品设备”(比较:final product指“最终产品,成品”)。
6. Recently, there have...;but to date small.
【译文】 最近,有些人试图研制多晶硅和带状硅,这些材料比高质单晶硅成本小,但是,迄今为止,这些成本明显小的材料的效能低得不实用。
7. Moreover, these materials..., and cells.
【译文】 而且,这些材料之所以便宜,惟一原因是在制造晶体半导体设备时使用了无序性方法,而无序性降低了晶体太阳能电池的功效。
8. Amorphous materials...materials: that is, ...crystals.
【译文】 与晶体材料相比,非结晶体材料使原子结构发生无序变化,即:它们只有晶体的短程序列特征,而没有晶体结构的长期周期性特征。
9. Crystalline silicon..., whereas...necessary.
【译文】 必须要使晶体硅达到200微米厚,才能吸收足够的阳光进行有效的能量转换,而合适的非结晶体材料只要1微米厚就够了。
10. Crystalline silicon..., but foot.
【译文】 晶体硅太阳能电池每平方英尺造价超过1美元,而非晶形膜每平方英尺造价只有50美分。
11. Although many scientists..., they...power.
【译文】 许多科学家虽然已经认识到非晶硅太阳能电池的低成本,但是他们也感到,要生产出这样的电池并使之产生足够的功效、在很大程度上满足对电能的需要是不可能的。
12. Already, solar cells..., and further...efficiencies.
【译文】 用非结晶体材料研制的太阳能电池的使用功效已经远远超过6%,未来的研究必将找出成本更低但功效更高的非结晶体材料。
★ Passage Two
Imagine a ladder with 3 billion rungs rising more than 800,000 kilometers above Earth— more than twice as high as the moon. Imagine also that each rung is divided by a line and that on either side of the line is printed one of four letters of the alphabet. Finally, envision yourself climbing the ladder and writing down the pairs of letters that make up each rung. 3) If you could climb one rung per second, recording the letters in notebooks as you go, it would take you approximately 100 years to reach the top of the ladder. Your notebooks would contain enough information to fill 5,000 books the size of a typical novel.
This imaginary task gives some ideas of the challenge facing biologists in the United States and elsewhere as they embark on a monumental project: deciphering all the coded information in the human genome, all the genes in a human cell. Genes, the basic units of heredity, guide the development and functioning of our bodies. All plant and animal life on Earth is governed by genes, and every species has its own individual genome. We human beings have a genetic makeup that is uniquely our own.
The project to achieve a complete understanding of the genome is by far the largest coordinated effort ever undertaken in the biological sciences. It involves hundreds of scientists working full-time and may take 15 years and $3 billion to complete. But supporters of the idea say the results should more than justify the labor and expense. They predict that a complete understanding of the human genetic code would provide untold benefits for humanity, for example, those abilities to diagnose, cure, and eventually prevent many diseases caused by faulty genes. 4) And biologists, they say, would acquire a far deeper understanding of life itself—how life began, how it evolved, how embryos develop, how the brain works, and why people age and die. 5) So great is the challenge of deciphering the genome, and so far-reaching the possible benefits, that many scientists have called that goal the Holy Grail of biology.
Nevertheless, the project is controversial. Many biologists say it will not lead to practical applications any faster than studying individual genes, one at a time. For one thing, they note that merely reading the code of a gene tells you little about that gene’s role in life. Up to now, the usual approach in learning about human genes has been to start with a known disease, track down the gene (or genes) involved, and decode it (or them). That method is comparable to reading only books that you know something about. The strategy being taken in the genome project is more like the opposite—reading every book in the library to find those with information of value to you.
1. In the first paragraph the author uses the metaphor in order to .
[A] illustrate the structure and function of the genome
[B] explain why it is impossible to achieve an understanding of the genome
[C] give the reader the idea of the immensity of the genome project
[D] argue that it is not enough to study individual genes
2. The word “decipher” (in the first sentence of the second paragraph) probably means .
[A] break down and classify [B] discover and interpret
[C] challenge and modify [D] identify and record
3. Which of the following is NOT mentioned as a benefit of the genome project?
[A] It enables us to understand the life process better.
[B] It may help to disclose the causes of many diseases.
[C] It will eventually lead to longer life expectancy for people.
[D] It will help to save labor and expense in curing patients.
4. When scientists call the goal of the genome project the Holy Grail of biology, they mean it is a .
[A] difficult-to-achieve goal of biology
[B] wrongly-targeted goal of biology
[C] long-cherished goal of biology
[D] sacred but imaginary goal of biology
5. It is implied that opponents of the genome project believe that .
[A] studying individual genes is too narrow an approach
[B] the genome project will not benefit the medical science
[C] the result from studying individual genes is more applicable
[D] it is not possible and practicable to read every book in a library
【疑难长句翻译与注解】
1. Imagine also...alphabet.
【译文】 再想像一下:每个梯级用一条线分开,而线的两边印上四个字母中的一个。
2. Finally, envision...rung.
【译文】 最后,想像自己正在爬梯子,将构成每对字母的梯级写下来。
3. This imaginary task...project:...human genome, all the genes in a human cell.
【译文】 美国和世界各地的生物学家面临一项重大工程的挑战,这个假想的任务使人们对这个挑战的强度获得一些认识,这个挑战就是:破译人体基因组中的编码信息。
【注解】 monumental意为“纪念碑(式)的,重大的”;genome project指破译基因组的工程项目。
4. The project to achieve...sciences.
【译文】 该工程的目的是取得对基因组的全面认识,这是生物科学界迄今最大的协作项目。
【注解】 by far在此强调最高级。
5. They predict that..., for example, ...diagnose, cure, and...genes.
【译文】 他们预计,对人体基因编码的全面认识将给人类带来无法言喻的利益,例如,使人类能够诊断、治疗并最终预防基因缺陷造成的很多疾病。
【注解】 those abilities是benefits的同位语,其后的不定式短语是它的后置定语。
6. Many biologists say..., one at a time.
【译文】 许多生物学家说,与逐个研究个别基因相比,这项研究也不会获得更快的应用。
【注解】 这里的含义是:两种研究都不会很快获得应用。
7. The strategy being taken...to you.
【译文】 基因组工程研究目前采取的策略正好相反,即:通读图书馆中所有的书,寻找那些对你有价值的信息。
Part B 观点与例证
Directions:
You are going to read a text about the tips on how to choose appropriate adapted technology, followed by a list of choices. Choose the most suitable one from the list A~F for each numbered subheading (1~5). There is one extra choice which you do not need to use.
People with disabilities can use adapted technology (AT) to gain new skills, keep old ones and live more independently. An appropriate technology solution will hopefully decrease a person’s need for help or eliminate it all together. However, choosing the right technology is often a difficult task. This article offers strategies and tips to use when considering a technology solution.
(1)Be actively involved in making the decision.
When the end user is central to making the decisions about technology, the more likely it will effectively promote independence. Funding sources want to ensure that any device purchased is needed. Ultimately, the responsibility for success falls on the end user. The wrong decision can mean your job or at least be costly.
(2)Get others involved.
If you are considering getting some adapted technology, seek out feedback from others.
The team approach.
Traditionally, the user, a family member or significant other, teacher, immediate supervisor, technology consultant, are often members of the team. If the technology is being purchased by an agency, a school, or an employer, the end user will likely go through an assessment team. Try adding nontraditional team members if you think it will improve the group’s problem solving skills.
Another end user, someone good at crafts, or even a classmate will look at the issues differently and often have valuable insights. Be outspoken, and don’t be afraid to be a courageous problem solver. It will make for a much more elegant solution. Remember the group is there to solve a problem and decide if this technology is the best approach. That is why it is best to avoid a team where the end user and technology dealer are the two main parties of a team. It can become a feeding frenzy between the two. Remember the adapted technology dealer has a mortgage to pay and groceries to buy, and you, the end user, are a means to that economic end.
(3)Focus on function.
Often, disabilities distract people, making them unable to see any potential or ability. By focusing attention on functional skills, we move away from looking at someone in a clinical way and more toward a functional assessment.
(4)Thinking in general terms.
Generalize about the use of the device. Where will you use it? Could it be helpful in other settings? Are there other people at the office or in the family who could use the device? By thinking in general terms about the device, you can get more use or increase the effectiveness of the device.
(5)Strive for simplicity.
The best technology solution is a no-technology solution. However, adapted technology users only need what will help in accomplishing the task, in the simplest, most efficient way.
Finally, remember, choosing the right adapted technology specialist, vendor, dealer, and training are as important as selecting the best product. Follow these tips, and you will choose and buy the best adapted technology you need.
[A] It’s common for users to successfully use a device in an insulated clinical setting, like a computer lab or demonstration center, when evaluating or learning about the device. But still they are unable to use it in a real world setting.
[B] Sometimes parents consider purchasing a computer for their child so she can do homework. When they consider the purchase generally, they need to look at the computer needs of the entire family. Could an older sister use it to write reports? If it came with a modem, can mom fax or E-mail work from home?
[C] For example, even when you are choosing a very simple, low-tech piece of equipment, talking it over with other users, or a person who knows you well, will offer another perspective. They may see pitfalls that weren’t obvious to you.
[D] Here a good question to ask is, “What does this person want or need to do that he or she currently cannot do?” From there the team can begin to look for ways to alter the environment to enable the person to function more independently.
[E] For example, a reacher is a technology, which allows a person to grab an object they could not reach under other conditions. It’s uncomplicated, and not very costly.
[F] It’s better to actively participate in the process and ask lots of basic questions than try to fix a mess later. Just think about your closets. Is there something there that you do not use? Why aren’t you using it? The wrong size? Not your style? Uncomfortable to use? Ugly? Like most things we use, adapted technology must fit who we are: physically, emotionally, culturally and personally. The decision is more than just buying a product.
◎ Ⅲ. Translation
Translate the underlined sentences in the Reading Passages of Part A into Chinese.
◎ Ⅳ. Writing
Part A 应用文
Directions:
An annual meeting of department managers scheduled on Tuesday is put off. Send a fax to inform people concerned. The fax should announce:
1) that the meeting is put off;
2) the reason for it;
3) further arrangement.
You should write about 100 words.
Part B 英语写作
Directions:
Interpret the following picture and give comment on it. You are required to write on the Answer Sheet with no less than 180 words.
审题指导
标题提示应以议论为主,最好下笔前先立意。文章应观点鲜明,无论认为克隆技术对人类有利还是有害,或是利弊兼而有之,都应注意论证的选材及文章结构逻辑。既可以从某个具体例子展开讨论,也可概括性论证。
Useful Expressions
1. human cloning experiments 克隆人试验
2. cloned babies 克隆婴儿
3. test-tube babies 试管婴儿
4. surrogate mothers 代理母亲
5. give birth to/create a baby 生出/创造出一个婴儿
6. to perform miracles 表演魔术;创造奇迹
7. cell 细胞
8. genetic engineering 遗传工程
9. Dolly the lamb (克隆)羊羔多利
10. treatment for infertility 不育症的治疗
11. to be born with defects 天生有缺陷
12. an ethical problem 伦理道德问题
13. a moral issue 道德问题
14. immoral 不道德的
15. unethical application of scientific theories 不道德地应用科学理论
16. human value 人类价值观,人的价值
17. a scientific breakthrough 科学突破, 突破性科学进展
18. universal/general opposition 普遍反对
19. to be pessimistic/optimistic about 对……感到悲观/乐观
练习答案与题解
◎ Ⅰ. Cloze
1.[C] unpredictable
段首句讲1975年中国海城地震前几个小时,成千上万的人撤出了海城。本句所讲西方科学家对地震的看法,从全文的主题,特别是下文“impossible”等词以及中国政府对这个现象的解释可以看出,本题应选unpredictable(不可预测的)才合逻辑。其余选项均不合文意:incredible,“难以置信的,不可思议的”;unimaginable,“无法想像的”;indispensable,“必不可少的”。
2.[A] therefore
本题考对上下文逻辑的理解。 本句“像海城一样在地震前就撤离不可能”与前文“地震是不可预测的”是因果关系,故选therefore(因此)。其余选项均不合逻辑:nevertheless(尽管)表示转折;otherwise(否则)表示相反;moreover(此外)表示递进。
3.[D] away
give something away有“泄露”的意思,gave the game away在此意为“暴露了秘密”,符合文意。其余选项与give搭配时含义分别为:give in,“妥协,让步”;give up,“放弃”;give off,“放出,释放”。
4.[B] strange
根据常识和下文“许多种动物表现异常(many animal species behave queerly)”可以判断此处应选strange(奇怪的)。其余形容词都不适用于描写动物在地震前的表现:unique,“独特的,特殊的”;particular,“特定的,特殊的”;alien,“相异的,外国的,不相容的”。
5.[D] coincidence
本句主语It指代上文“鼠、蛇等动物在地震前表现异常的现象”,下句的解释(这些动物能够觉察到地下的预震似乎不大可能)表明在某些人看来这些现象在震前出现只是偶然,故应选lucky coincidence,“巧合”。其余选项均不合逻辑:event,“事件”;opportunity,“机会,机遇”;phenomenon,“现象”。
6.[A] missed
本题考定语从句的谓语,主语是关系代词that,指代主句中的pre-shocks,所选动词是被动语态。missed意为“错过,漏掉”,符合文意:“没有被敏感的测震仪器发现的地下预震”。omitted意为“省略,忽略,删除”,在此不适用。其余选项与文意相反:picked,“捡拾,采摘,辨别,挑选”;witnessed,“见证,目击”。
7.[A] crowds
本题考动词用法。定语从句主语that指代“仪器(equipment)”;crowds在此用作及物动词,意为“群聚于,拥塞,挤满”,是正确选择。其余选项均不适用:scatters作及物动词用时意为“散播,撒布”;surrounds意为“包围,围绕”;gathers用作及物动词时意为“使聚集,收集,逐渐获得”。
8.[D] possible
本题考对上下文逻辑的理解。本句主语it指代上文所讲动物预知地震一事,句首But以及下文所讲事实(fact)都表明本句观点应与上文(lucky coincidence, unlikely)不同,故选possible(有可能的)。其余选项均不合逻辑:uncertain,“不肯定的”;natural,“自然的”;feasible,“可行的,可操作的”。
9.[C] that
本题考句子结构。只要看出并列连词and连接的两个从句都是fact的同位语,便可断定that为正确选择。
10.[C] at
本题考介词与名词的常用搭配。一般具体讲多远要用at,如at a distance of 20 miles(在20英里之外),at a few steps’ distance(在几步路以外),at a considerable distance(在相当远的地方)等。本句...at distances which the familiar human senses could not manage意为“……我们所熟悉的人类感官能察觉(同类)的距离以外”。
11.[D] established
本题考动宾搭配。只要看出本句动词的主语是the fact,便不难断定应选及物动词established(确立,使得到公认)。其余选项均不同fact作动宾搭配:performed,“表演,执行,履行”;hypothesized,“假设”;conducted,“引导,处理,指挥,传导”。
12.[B] suggest
suggest有“建议,提出”等意思,符合文意:动物能够察觉(detect)人类无法感知的情况,这些现象(such observations)使有些人提出这些动物有专门用以感觉地下震颤的感官。其余选项不合逻辑:refute,“驳斥”;predict,“预言”;verify,“证实,证明”。
13.[B] though
本题考逻辑。本句“可能性更大的是(What is more likely)”否定了上句内容,故应选表示转折的though(然而)。其余选项均不合逻辑。
14.[A?/SPAN> lack
本句破折号后面的同位语旨在解释某些动物所具有的“额外感知力(extra sense)”,即“人类所没有的某种感知形式(a form of perception)”,故应选lack(缺乏)。其余选项均不能说明extra sense:need,“需要”;seek,“寻求”;possess,“具有”。
15.[C] transmitted
本题考动宾搭配。从句的主语that指代vibrations(震颤),transmitted通常指“(信号,电波等的)传播,传导”,是正确选择。其余选项均不适用:distributed,“分配,分布”;delivered,“递送,送达”;dispatched,“派遣,发送”。
16.[D] Whether
本题考句子结构。只要看出主句的谓语动词是is,其主语是从句...any of this really has implications...,便可判断出应选Whether引导主语从句。其余选项均不能引导主语从句。
17.[A] for
for有“对于,为了”等意思,在此符合文意:“这一切对于预测地震这类事情有无任何意义……”。其余选项均不适用。
18.[C] speculative
从全文特别是结尾可看出作者对动物是否能预测地震的问题的明确态度,speculative是speculate(推测,推断)的派生词,意为“猜测的,推测的”,符合文意。其余选项均不合文意:unreliable,“不可靠的”;documentary,“文献的,记录的”;imaginative,“富有想像力的”。
19.[A] that
本题考句子结构。从句“the limitations...can cause...”是“reminder”的同位语,故需用that引导。其余选项均只能引导状语从句,在此不适用。
20.[B] lines
本题考搭配。line有“方法,界限”等意思,lines of inquiry即“调查方法”,符合文意:“即使能力很强的科学家都有可能因人类感官的局限性而忽略显而易见的调查方法;没有证据并不等于证明没有。”其余选项均不适用:ranks,“列,排,等级”;traces,“痕迹,踪迹,微量”;tracks,“跑道,轨迹”。
◎ Ⅱ. Reading Passages
Part A 阅读理解
Passage One
1.[D] 意为:光电设备和太阳能电池。
在第一段第四句中,下半句中提到的this technique指上半句中提到的single-crystal silicon solar cells。本句说这项研究前途不乐观,第三句中称low-cost photovoltaic devices的研究进展不大。由此可见,在这两句中,作者实际上用这两个词语来指称同一种东西。
2.[D]
第一段第三、四句提到,使用太阳能设备的根本问题是经济(指制造成本)问题,直到最近,在研制低成本的太阳能设备上几乎没有取得什么进展。大部分资金用于研究单晶体硅太阳能电池,虽然证据表明这种技术的前景并不乐观。下文在技术上对这一问题进行了具体分析。
3.[A]
第二段第四句提到,最近人们试图研制多晶体、带状硅,这种材料比高质单晶体硅成本低廉,但是到目前为止,这些低成本材料的效能低得不实用。
4.[B]
在第四段最后一句作者指出,用无结晶材料研制的太阳能电池的使用效能已达到6%以上,将来的研究必将找出成本更低但产生更高效能的无结晶材料。在本文中,作者对此项研究表示了肯定和乐观态度。另请参阅第三段。
5.[A]
从文章第四段最后一句来看,作者的态度是乐观的。另请参阅第三段和第4题题解。
Passage Two
1.[C]
在第一段作者使用了一个比喻,这个比喻的用途在第二段第一句得到说明:这个假想的任务使人们对于生物学家们所面临的挑战获得一些认识,这个挑战就是:破译人体所有遗传基因中的编码信息。这里所谓“挑战”即指任务重大、不容易完成。
2.[B]
该词意为:破译;解释。
3.[D]
第三段第五句提到了[A]表达的内容,第四句提到了[B]表达的内容。同时,这两句话都暗示了[C](它最终将使人延长寿命)表达的内容。
4.[C]
the Holy Grail原指耶稣在最后的晚餐时所使用的杯(或盘),这里转义为“长久渴望的东西”。这句话是对第三段的小结,第三段主要列举了研究的潜在意义。
5.[C]
第四段提到反对者的意见,他们认为,一方面:这项研究不像单个基因的研究那样会很快得到应用;另一方面:仅记录基因遗传密码并不能说明它在生命过程中所起的作用。
Part B 观点与例证
1.[F]
该部分指出在买技术设备时,最终的使用者要积极参与到做买的决定过程中来。[F]选项告诉我们询问一系列的问题,积极参与到过程当中,要比事后面对一片混乱要强得多,并对此举例进行了说明,指出作决定并不只是买一件产品。其中,“actively participate in the process”和“the decision”是关键词语。
2.[C]
该部分指出你在考虑买设备时,要听从别人的建议和反馈。[C]选项中的例子,指出即使你只是买一个比较简单的低端科技产品,通过跟其他使用这种产品的人或者你熟悉的人进行交谈,也会让你有一个新的看法;指出这些人可以帮你找到你注意不到的很明显的缺陷。
3.[D]
该部分指出购买时要把焦点放在功能用途上。[D]选项中指出要问的一个很好的问题是:“要用这个设备的人现在所不能做的事情是什么呢?”而这个问题就是在购买时,从用途上要考虑的主要问题,与本部分一脉相承。
4.[B]
该部分告诉我们对设备的用途还要进行综合考虑。[B]选项举例说当父母为孩子买电脑时,还要考虑整个家庭的需要,这就是对设备用途的综合考虑。这是对该部分主题的举例阐述。其中选项中“consider the purchase generally”也能提示考生选出正确答案。
5.[E]
该部分告诉我们,购买时要以简单为目标;指出改装型科技设备的使用者只需要能以最简单、最有效的方式帮助完成任务的东西。[E]选项所举例子指出,一个拿东西的工具,就是一个技术设备,它能让人拿到在其他情况下拿不到的东西。这种工具不复杂,也不贵。[E]选项用具体例子说明了为什么购买时要以简单为目标。其中“uncomplicated”是关键词。
◎ Ⅲ. Translation
1. 这是一个简单主从复合句。句架是While single crystal silicon has been proven..., ...and scarce materials can have even..., costs must be reduced by...to make them practical for...。前面While引导让步从句,在这个从句中含两个并列的句子,由and连接;主句是costs must be reduced...; 在to make them practical for...中,them指materials。 本句应译成:虽然已经证明单晶硅在太空研究项目中使用的效率高达18%,而且其他更昂贵的和稀有的材料使用效率更高,但是成本必须减少到1/100以下,才能使那些材料的商业使用成为切实可行。
2. 这是一个简单主从复合句。句架是..., it is not the conductivity...which is..., but only the photoconductivity, that is, the conductivity in the presence...。句中which引导定语从句,修饰前面的the conductivity of the material in the dark; the conductivity in the presence of sunlight是photoconductivity的同位语。本句应译成:例如,关系重大的不是处在黑暗中的材料的电导性,而仅仅是材料的光电导性,即材料在阳光照耀下的电导性。
3. 这是一个简单主从复合句。句架是If you could..., recording...as you go, it would take you...100 years to reach...。If引导条件状语从句,recording引导分词短语,作climb的伴随状语,在状语中as you go又引导时间状语从句,修饰recording。主句中it是形式主语,真正的主语是不定式to reach引导的短语。本句应译成:如果你每秒钟爬一个梯级,在爬的同时把字母记录在笔记本上,你大概需要用100年的时间才能爬到梯顶。
4. 这是一个简单主从复合句。句架是...biologists, ..., would acquire a...understanding of life...。破折号后都是用来进一步说明a deeper understanding of life。本句应译成:他们说,生物学家将对生命本身有更深刻的了解——生命怎样开始、生命如何演变、胚胎如何发育、大脑如何工作、人为何衰老和死亡。
5. 这是一个倒装的并列主从复合句,两个分句由and连接。句架是The challenge of...is so great and the possible benefits(are省略) so far-reaching...that...。that引导结果状语从句。the Holy Grail of biology是goal的补语。Holy Grail=Grail,意为“长期追求的目标,渴望得到的东西”。本句应译成:破译基因组密码的挑战如此巨大,可能得到的益处如此深远,因而许多科学家把那个目标称作生物学的“圣杯”(意为长期追求的目标)。
◎ Ⅳ. Writing
Sample for reference:
Part A 应用文
To Whom This May Concern,
The Board of Directors decided that the annual meeting of department managers originally scheduled on tomorrow is put off due to problems of the weather.
According to the weather forecast at noon, a heavy snow is in progress and Highways 302 and 308 are to be closed by midnight today. As a result, transport to and from the headquarters of the enterprise becomes impossible. Consequently, the meeting is postponed. Further notice for the renewed date will be delivered by 5 p.m. tomorrow.
We regret the inconvenience this change will cost you.Alice Brown
Secretary of the Board
Part B 英语写作
Humans have long been fascinated with the idea of creating living creatures like ourselves, as evidenced in the picture. Since childhood we have learned how the Monkey King pulls out a few of his hairs, breathes to them, and little monkeys appear to help him fight the monsters.
Now this dream seems to have come true, with the announcement that cloned babies are created with human cells. Although still waiting for authentification as to the true origin of those babies, we know that the day is not far when humans are able to mass-produce human beings with the same magic power of the Monkey King.
While some people welcomed the cloning technology as scientific wonders, others are really concerned with its implications. And I think their worries are justified. History has taught us that humans are capable of self-destruction with advanced technology. Who is to say that cloning technology is to be applied only for the benefits of mankind as a whole, and not used to serve the interests of a few lunatics like Hitler? What will happen to families if we no longer need a mother and father to produce a baby? If babies can be mass-produced with traits or features desirable to their producer or potential customer, no one can guarantee a few privileged will not take advantage of the new technology to preserve their interests by creating only cloned beings inferior to themselves.
So our concerns now should not be focused on when or by whom the first cloned babies are born or how to improve the technology. We need laws, international regulations before the technology is perfected. |
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