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Silk（）by Chinese for thousands of years now.
- A、has been used
- B、was used
- C、is used
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更多 “Silk（）by Chinese for thousands of years now.A、has been usedB、was usedC、is used” 相关考题
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They sell() , such as cotten cloth, silk cloth, and woolen cloth.
A、clothesB、clothC、clothsD、clothing
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() the first and largest ethnic group to work on the construction of the transcontinental railroad.
A.Chinese wereB.The Chinese wasC.Chinese wasD.The Chinese were
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ENew archaeological discovers suggest that trade between Europe and Asia along the Silk Road probably began in some form. many countries earlier than once thought. The findings, coupled with a widening range of scientific and historical research could add a fascinating new page to the epic of the Silk Road.The farest and most surprising discovery is pieces of silk found in the hair of and Egyptian mummy from about 1000 BC, long before regular traffic on the Silk Road and at least one thousand years before silk was previously thought to be used in Egypt. Other research may extend human activity along this route back even further, perhaps a million years to the migration of human ancestors into eastern Asia.The official origin of East-West commerce along the road is usually placed in the late 2nd century BC which was the agent of the Chinese Emperor Wu-di returned from a dangerous secret mission（使命）across the desert into the remote high country of Central Asia. The agent, Zhang Qian, travelled as far as Afghanistan back knowledge of even more distant lands such as Persia, Syria and a place known as Lijion,. Histerents have called this one of the most important journeys in ancient times. His journey opened the way for what have been thought to be the first indirect contacts between the ancient world’s two superpowers, China and Rome. Chinese silk, first traded to central Asian tribes for war horses and to the Parthians of old Pet la lu exchange for acrobats and ostrich eggs, was soon finding its way through a network of merchants to the luxury markets in Rome.But the new discoveries show that Chinese silk was apparently present in the West long before the Han emperor started organized trade over the Silk Road. The research could change thinking about the early history of world trade and provide insights into the mystery of just how and when Europe and the Mediterranean lands first became aware of the glorious culture at the other end of Eurasia.72. The word “coupled” in the first paragraph could best be replaced by .A. producedB. contributedC. doubledD. combined
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The silk thread found in the hair of an Egyptian mummy suggests that .A. Egyptians had probably travelled to China to buy silkB. trade along the Silk Road began earlier than once thoughtC. historical research often achieves fascinating resultsD. new light can now be thrown on ancient trading practices
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( ) are ( ).
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Silk( )by Chinese for thousands of years now.A. has usedB. has been usedC. was usedD. is used
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As large numbers of Chinese flocked to Japan to pay thousands for toilet seats, it was a surprise to many people ____________ the smart toilet lids on sale in Japan were actually made in China.A.whether
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共用题干
New Understanding of Natural Silk's MysteriesNatural silk,as we all know,has a strength that man-made materials have long struggled to match.In a discovery that sounds more like an ancient Chinese proverb than a materials science breakthrough,MIT re- searchers have discovered that silk gets its strength from its weakness.Or,more specifically,its many weak- nesses. Silk gets its extraordinary durability and ductility（柔韧性）from an unusual arrangement of hydrogen bonds that are intrinsically very weak but that work together to create a strong,flexible structure.Most materials一especially the ones we engineer for strength一get their toughness from brittleness.As such,natural silks like those produced by spiders have long fascinated both biologists and engineers because of their light weight,ductility and high strength(pound for pound,silk is stronger than steel and far less brittle). But on its face,it doesn't seem that silks should be as strong as they are;molecularly,they are held together by hydrogen bonds , which are far weaker than the covalent（共价的）bonds found in other molecules.To get a better understanding of how silk manages to produce such strength through such weak bonds, the MIT team created a set of computer models that allowed them to observe the way silk behaves at the atomic level. They found that the arrangement of the tiny silk nanocrystals（纳米晶体）is such that the hydro- gen bonds are able to work cooperatively,reinforcing one another against external forces and failing slowlywhen they do fail,so as not to allow a sudden fracture to spread across a silk structure.The result is natural silks that can stretch and bend while retaining a high degree of strength.But while that's all well and good for spiders,bees and the like,this understanding of silk geometry could lead to new materials that are stronger and more ductile than those we can currently manufacture.Our best and strongest materials are generally expensive and difficult to produce(requiring high temperature treatments or energy-intensive processes).By looking to silk as a model,researchers could potentially devise new manufacturing methods that rely on inexpensive materials and weak bonds to create less rigid,more forgiving materials that are nonetheless stronger than anything currently on offer. And if you thought you were going to get out of this materials science story without hearing about carbon nanotubes（纳米碳管）, think again. The MIT team is already in the lab looking into ways of synthesizing silk-like structures out of materials that are stronger than natural silk-like carbon nanotubes. Super-silks are on the horizon.If the hydrogen bonds break due to external forces,they break fast.A:RightB:WrongC:Not mentioned
考题
共用题干
New Understanding of Natural Silk's MysteriesNatural silk,as we all know,has a strength that man-made materials have long struggled to match.In a discovery that sounds more like an ancient Chinese proverb than a materials science breakthrough,MIT re- searchers have discovered that silk gets its strength from its weakness.Or,more specifically,its many weak- nesses. Silk gets its extraordinary durability and ductility（柔韧性）from an unusual arrangement of hydrogen bonds that are intrinsically very weak but that work together to create a strong,flexible structure.Most materials一especially the ones we engineer for strength一get their toughness from brittleness.As such,natural silks like those produced by spiders have long fascinated both biologists and engineers because of their light weight,ductility and high strength(pound for pound,silk is stronger than steel and far less brittle). But on its face,it doesn't seem that silks should be as strong as they are;molecularly,they are held together by hydrogen bonds , which are far weaker than the covalent（共价的）bonds found in other molecules.To get a better understanding of how silk manages to produce such strength through such weak bonds, the MIT team created a set of computer models that allowed them to observe the way silk behaves at the atomic level. They found that the arrangement of the tiny silk nanocrystals（纳米晶体）is such that the hydro- gen bonds are able to work cooperatively,reinforcing one another against external forces and failing slowlywhen they do fail,so as not to allow a sudden fracture to spread across a silk structure.The result is natural silks that can stretch and bend while retaining a high degree of strength.But while that's all well and good for spiders,bees and the like,this understanding of silk geometry could lead to new materials that are stronger and more ductile than those we can currently manufacture.Our best and strongest materials are generally expensive and difficult to produce(requiring high temperature treatments or energy-intensive processes).By looking to silk as a model,researchers could potentially devise new manufacturing methods that rely on inexpensive materials and weak bonds to create less rigid,more forgiving materials that are nonetheless stronger than anything currently on offer. And if you thought you were going to get out of this materials science story without hearing about carbon nanotubes（纳米碳管）, think again. The MIT team is already in the lab looking into ways of synthesizing silk-like structures out of materials that are stronger than natural silk-like carbon nanotubes. Super-silks are on the horizon.It is indicated that materials stronger than natural silk can be expected in the future.A:RightB:WrongC:Not mentioned
考题
共用题干
New Understanding of Natural Silk's MysteriesNatural silk,as we all know,has a strength that man-made materials have long struggled to match.In a discovery that sounds more like an ancient Chinese proverb than a materials science breakthrough,MIT re- searchers have discovered that silk gets its strength from its weakness.Or,more specifically,its many weak- nesses. Silk gets its extraordinary durability and ductility（柔韧性）from an unusual arrangement of hydrogen bonds that are intrinsically very weak but that work together to create a strong,flexible structure.Most materials一especially the ones we engineer for strength一get their toughness from brittleness.As such,natural silks like those produced by spiders have long fascinated both biologists and engineers because of their light weight,ductility and high strength(pound for pound,silk is stronger than steel and far less brittle). But on its face,it doesn't seem that silks should be as strong as they are;molecularly,they are held together by hydrogen bonds , which are far weaker than the covalent（共价的）bonds found in other molecules.To get a better understanding of how silk manages to produce such strength through such weak bonds, the MIT team created a set of computer models that allowed them to observe the way silk behaves at the atomic level. They found that the arrangement of the tiny silk nanocrystals（纳米晶体）is such that the hydro- gen bonds are able to work cooperatively,reinforcing one another against external forces and failing slowlywhen they do fail,so as not to allow a sudden fracture to spread across a silk structure.The result is natural silks that can stretch and bend while retaining a high degree of strength.But while that's all well and good for spiders,bees and the like,this understanding of silk geometry could lead to new materials that are stronger and more ductile than those we can currently manufacture.Our best and strongest materials are generally expensive and difficult to produce(requiring high temperature treatments or energy-intensive processes).By looking to silk as a model,researchers could potentially devise new manufacturing methods that rely on inexpensive materials and weak bonds to create less rigid,more forgiving materials that are nonetheless stronger than anything currently on offer. And if you thought you were going to get out of this materials science story without hearing about carbon nanotubes（纳米碳管）, think again. The MIT team is already in the lab looking into ways of synthesizing silk-like structures out of materials that are stronger than natural silk-like carbon nanotubes. Super-silks are on the horizon.MIT researchers carry out the study to illustrate an ancient Chinese proverb.A:RightB:WrongC:Not mentioned
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Nancy Liu amved in Sydney from China as a"skilled immigrant"with an economics degree 14 years ago.With her husband,she set up a business consultancy in the suburb in southem Sydney.However,Liu was only an epitome of thousands of Chinese investors.Since then,Chinese investment has transformed the city:many of its shop signs are now in Chinese.Ms Liu was a forerunner of a new wave of Chinese immigrants to Australia's oldest and biggest city.Hong Kong once supplied most of Australia's Chinese settlers,but over the past few years the pattern has shifted.Now it is the rising middle classes from other places of China who go there,looking for a more relaxed life style.About 4%of Sydney's people were bom in China.Currendy,China has become Australia's biggest trading partner,and its largest source of foreign students.
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Which of the following statements is true according to the text？( ) A.Chinese firms are trying to revive craftsmanship in order to help them develop authentic brands.
B.A good relationship with officials helps firms to invest in“strategic” industries.
C.Wensli often says no to the govermment’s demand to invest in“strategic” industries.
D.Wensli is reviving the Sino-French silk connection willingly.
考题
Which of the following statements is true according to the text？( ) A.Chinese firms are trying to revive craftsmanship in order to help them develop authentic brands
B.A good relationship with officials helps firms to invest in“strategic” industries
C.Wensli often says no to the govermment’s demand to invest in“strategic” industries
D.Wensli is reviving the Sino-French silk connection willingly
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以下常见纺织纤维的中、英文对照完全正确的选项是（）。A、棉catton；麻linen；丝sillk；毛woolB、棉cotton；麻linon；丝silk；毛voolC、棉cotton；麻linen；丝silk；毛woolD、棉catton；麻linon；丝silk；毛wool
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中国青年志愿者英文名是（）。A、Chinese Young Volunteers organizationB、chinese youth volunteers AssociasionC、Chinese Young Volunteers AssociasionD、chinese youth volunteers Party
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How long the haul for international deep-sea movement usually? （）A、Very longB、Ten thousands of milesC、Thousands of milesD、Thousands of kilometers
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问答题Practice 1 We have learned from our Embassy that you are interested in importing Chinese silk products. We are a long-established exporter of silk products in China and we have a very good reputation both at home and abroad. Our products sell well all over the world and highly valued by our customers for their excellent quality and fine workmanship(工艺). Enclosed are our catalogue and price list covering all the products. We are looking forward to your early reply.
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单选题Never before ______ won gold medals in the Olympic Games.A
such many Chinese athletes haveB
have so many Chinese athletesC
have such many Chinese athletesD
so many Chinese athletes have
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单选题Silk（）by Chinese for thousands of years now.A
has usedB
has been usedC
was usedD
is used
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