问答题Practice 3 The shotgun marriage of chemistry and engineering called “Nanotechnology” is ushering in the era of serf-replicating machinery and serf-assembling consumer goods made from cheap raw atoms. Nanotechnology is molecular manufacturing or, more simply, building things one atom or molecule at a time with programmed baroscopic robot arms. A nanometer is one billionth of a meter (3-4 atoms wide). Utilizing the well understood chemical properties of atoms and molecules (how they “stick” together), nanotechnology proposes the construction of novel molecular devices possessing extraordinary properties. The trick is to manipulate atoms individually and place them exactly where needed to produce the desired structure. This ability is almost in our grasp. The anticipated payoff for mastering this technology is far beyond any human accomplishment so far. By treating atoms as discrete, bit-like objects, molecular manufacturing will bring a digital revolution to the production of material objects. Working at the resolution limit of matter, it will enable the ultimate in miniaturization and performance. By starting with cheap, abundant components-molecules-and processing them with small, high-frequency, high-productivity machines, it will make products inexpensive. Design computers that each executes more instructions per second than all of the semiconductor CPUs in the world combined. Nanotechnology will reverse the harm done by the industrial revolution. Imagine being able to cure cancer by drinking a medicine stirred into your favorite fruit juice. Imagine a supercomputer no bigger than a human cell Imagine a four-person, surface-to-orbit spacecraft no larger or more expensive than the family car. These are just a few products expected from nanotechnology. Humanity will be faced with a powerful, accelerated social revolution as a result of nanotechnology. In the near future, a team of scientists will succeed in constructing the first nano-sized robot capable of self-replication. Within a few short years, and five billion trillion nano-robots later, virtually all present industrial processes will be obsolete as well as our contemporary concept of labor. Consumer goods will become plentiful, inexpensive, smart, and durable. Medicine will take a quantum leap forward, space travel and colonization will become safe and affordable. For these and other reasons, global life styles will change radically and human behavior will be drastically impacted. The world is on the brink of a new technological revolution beyond any human experience. A new, more powerful industrial revolution capable of bringing wealth, health, and education, without pollution, to every person on the planet. No longer will forest need to be cut or smoke spewed into the air. This is the promise of nanotechnology. A nanometer is one billionth of a meter. That’s a thousand, million times smaller than a meter. If you blew up a baseball to the size of the earth, the atoms would become visible, about the size of grapes. Some 3-4 atoms fit lined up inside a nanometer.
问答题
Practice 3 The shotgun marriage of chemistry and engineering called “Nanotechnology” is ushering in the era of serf-replicating machinery and serf-assembling consumer goods made from cheap raw atoms. Nanotechnology is molecular manufacturing or, more simply, building things one atom or molecule at a time with programmed baroscopic robot arms. A nanometer is one billionth of a meter (3-4 atoms wide). Utilizing the well understood chemical properties of atoms and molecules (how they “stick” together), nanotechnology proposes the construction of novel molecular devices possessing extraordinary properties. The trick is to manipulate atoms individually and place them exactly where needed to produce the desired structure. This ability is almost in our grasp. The anticipated payoff for mastering this technology is far beyond any human accomplishment so far. By treating atoms as discrete, bit-like objects, molecular manufacturing will bring a digital revolution to the production of material objects. Working at the resolution limit of matter, it will enable the ultimate in miniaturization and performance. By starting with cheap, abundant components-molecules-and processing them with small, high-frequency, high-productivity machines, it will make products inexpensive. Design computers that each executes more instructions per second than all of the semiconductor CPUs in the world combined. Nanotechnology will reverse the harm done by the industrial revolution. Imagine being able to cure cancer by drinking a medicine stirred into your favorite fruit juice. Imagine a supercomputer no bigger than a human cell Imagine a four-person, surface-to-orbit spacecraft no larger or more expensive than the family car. These are just a few products expected from nanotechnology. Humanity will be faced with a powerful, accelerated social revolution as a result of nanotechnology. In the near future, a team of scientists will succeed in constructing the first nano-sized robot capable of self-replication. Within a few short years, and five billion trillion nano-robots later, virtually all present industrial processes will be obsolete as well as our contemporary concept of labor. Consumer goods will become plentiful, inexpensive, smart, and durable. Medicine will take a quantum leap forward, space travel and colonization will become safe and affordable. For these and other reasons, global life styles will change radically and human behavior will be drastically impacted. The world is on the brink of a new technological revolution beyond any human experience. A new, more powerful industrial revolution capable of bringing wealth, health, and education, without pollution, to every person on the planet. No longer will forest need to be cut or smoke spewed into the air. This is the promise of nanotechnology. A nanometer is one billionth of a meter. That’s a thousand, million times smaller than a meter. If you blew up a baseball to the size of the earth, the atoms would become visible, about the size of grapes. Some 3-4 atoms fit lined up inside a nanometer.
参考解析
解析：
暂无解析
相关考题：
It is implied in the last paragraph that_________ .A． people who possess information will have more material advantage and be more wealthB． the ability to read and write will not be as the knowledge of computersC． information or knowledge will be more important in manufacturing than in servicesD． people with information or knowledge will be the potential creator of wealth in the new era
There are more and more ______ of software for accounting, this has made the different types of software more accessible in terms of costs and variety. A manufacturers ;B manufacturing ;C manufactures
Exports are either raw materials or manufactured goods. Raw materials are products of the land, such as cotton, timber or rubber. Some raw materials such as iron ore, come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods.Some countries produce food for export, for example, meat, sugar, or cereals such as wheat and maize. These countries are agricultural countries. An agricultural county needs fertile land and a good climate. A cold, dry climate is not suitable for agriculture.A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case, it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods.21. From the first sentence of the passage we can know that there are()kinds of exports.A. twoB. threeC. four22. Raw materials are often exported by the countries that produce them to other countries where().A. they are consumedB. they are made into finished productsC. they are wasted23. The countries which produce food for export,for example, meat, sugar, or cereals such as wheat and maize are()countries.A. developedB. industrialC. agricultural24. An industrialized country usually has to import foodstuffs because().A. it cannot always produce enough food for its own needsB. it doesnt has fertile land and a good climateC. it relies on exports of manufactured products25. The best title of this passage is().A. Agriculture and IndustryB. ExportC. Production
When the machinery spaces are in the periodic unmanned condition, ____ shall be immediately available and on call to attend the machinery spaceA.the chief engineerB.the designated engineer from shipyardC.the designated duty officer in charge of the engineering watchD.the designated surveyor from classification society
GMP是指下列哪组英文的简写( )A、Good Manufacturing PracticeB、Good Manufacturing PractiseC、Good Manufacture PractiseD、Goods Manufacture Practice
Software Engineering is best described as （ ）.A.the practice of designing, building, and maintaining off-the-shelf software from prefabricated partsB.the practice of designing, building, and maintaining ad-hoc software without the use of formal methodsC.the practice of designing, building, and maintaining reliable and cost-effective software using standard techniquesD.the practice of designing, building, and maintaining fast and flexible software specifically for engineering applications
There’s no doubt that nanotechnology promises so much for civilization. However, all new technologies have their teething problems, And with nanotechnology, society often gets the wrong idea about its capabilities. Numerous science-fiction books and movies have raised people’s fears about nanotechnology ---with scenarios such as inserting little nano-robots into your body that monitor everything you do without you realizing it,or self-replicating nano-robots that eventually take over the world. So how do we safeguard such a potentially powerful technology? Some scientists recommend that nano-particles be treated as new chemicals with separate safety tests and clear labelling. They believe that greater care should also be taken with nano-particles in laboratories and factories. Others have called for a withdrawal of new nano products such as cosmetics and a temporary halt to many kinds of nanotech research. But as far as I’m concerned there’s a need to plough ahead with the discoveries and applications of nanotechnology.I really believe that most scientists would welcome a way to guard against unethical uses of such technology. We can’t go around thinking that all innovation is bad.all advancement is bad. As with the debate about any new technology.it is how you use it that’s important.So let’s look at some of its possible uses. Thanks to nanotechnology, there could be a major breakthrough in the field of transportation with the production of more durable metals. These could be virtually unbreakable, lighter and much more pliable leading to planes that are 50 times lighter than at present. Those same improved capabilities will dramatically reduce the cost of traveling into space making it more accessible to ordinary people and opening up a totally new holiday destination. In terms of technology, the computer industry will be able to shrink computer parts down to minute sizes. We need nanotechnology in order to create a new generation of computers that will work even faster and will have a million times more memory but will be about the size of a sugar cube. Nanotechnology could also revolutionise the way that we generate power .The cost of solar cells will be drastically reduced so harnessing this energy will be far more economical than at present.The underlined word”pliable”(line, Para.4) can be replaced by_.A. durable B. straight C. bentD. unbreakable
There’s no doubt that nanotechnology promises so much for civilization. However, all new technologies have their teething problems, And with nanotechnology, society often gets the wrong idea about its capabilities. Numerous science-fiction books and movies have raised people’s fears about nanotechnology ---with scenarios such as inserting little nano-robots into your body that monitor everything you do without you realizing it,or self-replicating nano-robots that eventually take over the world. So how do we safeguard such a potentially powerful technology? Some scientists recommend that nano-particles be treated as new chemicals with separate safety tests and clear labelling. They believe that greater care should also be taken with nano-particles in laboratories and factories. Others have called for a withdrawal of new nano products such as cosmetics and a temporary halt to many kinds of nanotech research. But as far as I’m concerned there’s a need to plough ahead with the discoveries and applications of nanotechnology.I really believe that most scientists would welcome a way to guard against unethical uses of such technology. We can’t go around thinking that all innovation is bad.all advancement is bad. As with the debate about any new technology.it is how you use it that’s important.So let’s look at some of its possible uses. Thanks to nanotechnology, there could be a major breakthrough in the field of transportation with the production of more durable metals. These could be virtually unbreakable, lighter and much more pliable leading to planes that are 50 times lighter than at present. Those same improved capabilities will dramatically reduce the cost of traveling into space making it more accessible to ordinary people and opening up a totally new holiday destination. In terms of technology, the computer industry will be able to shrink computer parts down to minute sizes. We need nanotechnology in order to create a new generation of computers that will work even faster and will have a million times more memory but will be about the size of a sugar cube. Nanotechnology could also revolutionise the way that we generate power .The cost of solar cells will be drastically reduced so harnessing this energy will be far more economical than at present.In the author’s opinion, research into nanotechnology probably means that it_A. has yet to win popular support B. ought to be continuedC. could be seen as unethicalD. can replicate people completely
There’s no doubt that nanotechnology promises so much for civilization. However, all new technologies have their teething problems, And with nanotechnology, society often gets the wrong idea about its capabilities. Numerous science-fiction books and movies have raised people’s fears about nanotechnology ---with scenarios such as inserting little nano-robots into your body that monitor everything you do without you realizing it,or self-replicating nano-robots that eventually take over the world. So how do we safeguard such a potentially powerful technology? Some scientists recommend that nano-particles be treated as new chemicals with separate safety tests and clear labelling. They believe that greater care should also be taken with nano-particles in laboratories and factories. Others have called for a withdrawal of new nano products such as cosmetics and a temporary halt to many kinds of nanotech research. But as far as I’m concerned there’s a need to plough ahead with the discoveries and applications of nanotechnology.I really believe that most scientists would welcome a way to guard against unethical uses of such technology. We can’t go around thinking that all innovation is bad.all advancement is bad. As with the debate about any new technology.it is how you use it that’s important.So let’s look at some of its possible uses. Thanks to nanotechnology, there could be a major breakthrough in the field of transportation with the production of more durable metals. These could be virtually unbreakable, lighter and much more pliable leading to planes that are 50 times lighter than at present. Those same improved capabilities will dramatically reduce the cost of traveling into space making it more accessible to ordinary people and opening up a totally new holiday destination. In terms of technology, the computer industry will be able to shrink computer parts down to minute sizes. We need nanotechnology in order to create a new generation of computers that will work even faster and will have a million times more memory but will be about the size of a sugar cube. Nanotechnology could also revolutionise the way that we generate power .The cost of solar cells will be drastically reduced so harnessing this energy will be far more economical than at present.The author says that some scientists believe that nano-particles___A. should be used with more cautionB. Should be restricted to secure environmentsC. Should only be developed for essential productsD. Should halt to do many kinds nanotech research
There’s no doubt that nanotechnology promises so much for civilization. However, all new technologies have their teething problems, And with nanotechnology, society often gets the wrong idea about its capabilities. Numerous science-fiction books and movies have raised people’s fears about nanotechnology ---with scenarios such as inserting little nano-robots into your body that monitor everything you do without you realizing it,or self-replicating nano-robots that eventually take over the world. So how do we safeguard such a potentially powerful technology? Some scientists recommend that nano-particles be treated as new chemicals with separate safety tests and clear labelling. They believe that greater care should also be taken with nano-particles in laboratories and factories. Others have called for a withdrawal of new nano products such as cosmetics and a temporary halt to many kinds of nanotech research. But as far as I’m concerned there’s a need to plough ahead with the discoveries and applications of nanotechnology.I really believe that most scientists would welcome a way to guard against unethical uses of such technology. We can’t go around thinking that all innovation is bad.all advancement is bad. As with the debate about any new technology.it is how you use it that’s important.So let’s look at some of its possible uses. Thanks to nanotechnology, there could be a major breakthrough in the field of transportation with the production of more durable metals. These could be virtually unbreakable, lighter and much more pliable leading to planes that are 50 times lighter than at present. Those same improved capabilities will dramatically reduce the cost of traveling into space making it more accessible to ordinary people and opening up a totally new holiday destination. In terms of technology, the computer industry will be able to shrink computer parts down to minute sizes. We need nanotechnology in order to create a new generation of computers that will work even faster and will have a million times more memory but will be about the size of a sugar cube. Nanotechnology could also revolutionise the way that we generate power .The cost of solar cells will be drastically reduced so harnessing this energy will be far more economical than at present.It can be deduced from the passage that___A. the use of Nanotcech could eventually take over the worldB. Nanotech has few implications affecting us in many waysC. it is too expensive to make solar energyD. it is possible users are very helpful and beneficial to humans
It is not only in affluent societies that people are obsessed with the idea of making more money.Consumer goods are（ ）everywhere and modern industry deliberately sets out to create new markets.Gone are the days when industrial goods are made to last forever.A.desirableB.desirousC.desiredD.desiring
Software Engineering is best described as （ ）. A. the practice of designing, building, and maintaining off-the-shelf software from prefabricated parts B. the practice of designing, building, and maintaining ad-hoc software without the use of formal methods C. the practice of designing, building, and maintaining reliable and cost-effective software using standard techniques D. the practice of designing, building, and maintaining fast and flexible software specifically for engineering applications
Chemistry is ______ as a science for it provides the ability to understand living systems at the molecular level.A.deniableB.reliableC.indispensableD.dependent
Exports are either raw materials or manufactured goods. Raw materials are products of the land， such as cotton， timber or rubber. Some raw materials， such as iron ore， come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods. Some countries produce food for export， for example， meat， sugar， or cereals such as wheat and maize. These countries are agricultural countries. An agricultural country needs fertile land and a good climate. A cold， dry climate is not suitable for agriculture. A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case， it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods. Raw materials are often exported by the countries that produce them to other countries where（）.Athey are consumedBthey are made into finished productsCthey are wasted
Exports are either raw materials or manufactured goods. Raw materials are products of the land， such as cotton， timber or rubber. Some raw materials， such as iron ore， come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods. Some countries produce food for export， for example， meat， sugar， or cereals such as wheat and maize. These countries are agricultural countries. An agricultural country needs fertile land and a good climate. A cold， dry climate is not suitable for agriculture. A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case， it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods.From the first sentence of the passage we can know that there are（）kinds of exports. A、twoB、threeC、four
问答题Practice 1 You should spend no more than 20 minutes on this task. In the city of Plonkers the people have developed a game called Aerial Ping Pong, derived from Gaellic football. The graph below shows spectator numbers for the 3 codes of football layed in Plonkers. Write a report for a university lecturer describing the information in the graph. You should write at least 150 words.
单选题The author believes that the future of nanotechnology will be ______.AconspicuousBdistinctiveCforeseeableDpromising
单选题In terms of nanotechnology, Kim was the first ______.Ato use it in washing machinesBto come up with the ideaCto introduce it to KoreaDto apply it to socks
问答题Practice 7 Task Sheet: A: WHAT IS IMPORTANT WHEN...? Aiming to improve career prospects ● Reading business articles ● Learning a foreign language ●…______ B: WHAT IS IMPORTANT WHE...? Deciding how to transport goods ● Destination ● Speed______ ●… C: WHAT IS IMPORTANT WHEN...? Purchasing new machinery ● Level of automation ● Maintenance requirements ●…
问答题Practice 7 While there are a few different conceptualizations of globalization, researchers seem to be in agreement that there are at least three dimensions of globalization: economic, political and cultural. The economic aspects of globalization stem from the spread of the capitalist world economy and the resulting expansion of goods and services. The need for cheap raw materials, cheap labor and new markets saw the expansion of the capitalist world economy from one that was primarily Eurocentric to one that encompassed the entire world. This process was achieved by various means and often involved overcoming political resistances in the new markets. The political aspects of globalization involved establishing control over markets and raw materials through either the use of direct military power or the establishment of international institutions that control such markets. The rise of the nation-state is an example of the political aspect of globalization, although it is argued that advances in telecommunications and information systems and the resulting constructions of institutions that transience territorial boundaries are making the nation-state obsolete.
问答题Practice 6 You should spend about 40 minutes on this task. Write about the following topic: An increase in production of consumer goods results in damage of the natural environment, what are the causes and possible solutions? Give reasons for your answer and include any relevant examples from your own knowledge or experience. Write at least 250 words.
单选题Exports are either raw materials or manufactured goods. Raw materials are products of the land， such as cotton， timber or rubber. Some raw materials， such as iron ore， come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods. Some countries produce food for export， for example， meat， sugar， or cereals such as wheat and maize. These countries are agricultural countries. An agricultural country needs fertile land and a good climate. A cold， dry climate is not suitable for agriculture. A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case， it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods.The best title of this passage is（）.AAgriculture and IndustryBExportCProduction
单选题Exports are either raw materials or manufactured goods. Raw materials are products of the land， such as cotton， timber or rubber. Some raw materials， such as iron ore， come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods. Some countries produce food for export， for example， meat， sugar， or cereals such as wheat and maize. These countries are agricultural countries. An agricultural country needs fertile land and a good climate. A cold， dry climate is not suitable for agriculture. A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case， it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods. The countries which produce food for export, for example, meat, sugar, or cereals such as wheat and maize are countries.（）AdevelopedBindustrialCagricultural
单选题Exports are either raw materials or manufactured goods. Raw materials are products of the land， such as cotton， timber or rubber. Some raw materials， such as iron ore， come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods. Some countries produce food for export， for example， meat， sugar， or cereals such as wheat and maize. These countries are agricultural countries. An agricultural country needs fertile land and a good climate. A cold， dry climate is not suitable for agriculture. A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case， it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods. Raw materials are often exported by the countries that produce them to other countries where（）.Athey are consumedBthey are made into finished productsCthey are wasted
填空题During the whole manufacturing process, the final product is made from a pulp of cellulose fibres.____
单选题Exports are either raw materials or manufactured goods. Raw materials are products of the land， such as cotton， timber or rubber. Some raw materials， such as iron ore， come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods. Some countries produce food for export， for example， meat， sugar， or cereals such as wheat and maize. These countries are agricultural countries. An agricultural country needs fertile land and a good climate. A cold， dry climate is not suitable for agriculture. A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case， it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods. An industrialized country usually has to import foodstuffs because,（）.Ait cannot always produce enough food for its own needsBit doesn't has fertile land and a good climateCit relies on exports of manufactured products
问答题Practice 9 In the United States most people are simultaneously consumers and producers; they are also voters who help influence the decisions of the government. The mixture among consumers, producers and government changes constantly, making a dynamic rather than a static economy. In the last decade consumers have made their concern known and government has responded by creating agencies to protect consumer interests and promote the general public welfare. In another development, the population and the labor force have moved dramatically from farms to cities, from the fields to the factories, and above all to service industries, thus providing more personal and public services. In today's economy these providers of services far outnumber producers of agricultural and manufactured goods. Generally, there are three kinds of businesses: (1) those started and managed personally by single owners or single entrepreneurs; (2) the partnership where two or more people share the risks and rewards of a business, and (3) the corporation where shareholders as owners can buy and sell their shares at any time on the open market. This latter structure, by far the most important, permits the amassing of large sums of money by combining investment of many people, making possible large-scale enterprises.