题目内容
Wood can_________.?
A.be used to making paper?
B.be used to make paper?
C.used to make paper?
B
阅读快车系列答案Plastic is one of the most important technological discoveries of the 20th century. However, it may soon be replaced. The new development- liquid wood- can replace plastics in all branches of modern-day industries.
Plastic as a material enjoys the biggest demand in the modern world, but it does have a number of drawbacks. First and foremost, plastic isn’t recyclable. Secondly, it contains toxins (毒物) helping develop cancerous diseases. Finally, it’s made of oil and oil reserves aren’t endless.
The liquid wood technology is likely to replace plastic and providing mankind with new materials for many years ahead. Norbert Eisenfreich, a senior researcher at the Faunhofer Institute for Chemical Technology in Germany (ICT), said that arboform, the new material, is made of lignin(木素质）, which can be obtained from soft tissues of wood. Once mixed with several other matenals, it turns into solid and non-toxic alternative for plastics.
ICT team leader Emilia Regina Inone-Kauffmann said the wood-working industry separates wood into three basic components, including lignin. Lignin isn’t used for the production of paper. Specialists of ICT mixed lignin with several natural materials and thus invented the material which could be melted and molded (铸型）.
When solid, arboform looks like plastic and possesses tho qualitie of polished wood. It can be used for the production of any items. Arboform is already used for the production of car parts which require extra strength. In addition, liquid wood can be recycled repeatedly. The material preserved all of its qualities even if it’s reprocessed ten times.
However, the new invention doesn’t enjoy an extensive use due to the high content of sulfur(硫) in it. German researchers are sure to reduce the amount of sulfur by 90% very soon to make arboform usable for home needs.
【小题1】According to the passage, plastic .
| A．helps us to reduce the use of petrol |
| B．helps to protect our environment in some way |
| C．does harm to our society in some way |
| D．has been replaced by the newly discovered material |
| A．It is easier made from natural oil. |
| B．It is more widely used in household |
| C．It is recyclable and friendly to environment. |
| D．It contains no poisonous materials. |
| A．lignin or arboform | B．soft tissues of wood |
| C．plastics or wood | D．mixture of several materials |
| A．the material’s extensive use | B．the content of sulfur in arboform |
| C．the production cost of arboform | D．the qualities of liquid wood |
| A．introduce liquid wood which will replace plastic |
| B．show readers how to produce arboform |
| C．advertise the new material-arboform |
| D．advertise new products made of arboform |
Plastic is one of the most important technological discoveries of the 20th century. However, it may soon be replaced. The new development- liquid wood- can replace plastics in all branches of modern-day industries.
Plastic as a material enjoys the biggest demand in the modern world, but it does have a number of drawbacks. First and foremost, plastic isn’t recyclable. Secondly, it contains toxins (毒物) helping develop cancerous diseases. Finally, it’s made of oil and oil reserves aren’t endless.
The liquid wood technology is likely to replace plastic and providing mankind with new materials for many years ahead. Norbert Eisenfreich, a senior researcher at the Faunhofer Institute for Chemical Technology in Germany (ICT), said that arboform, the new material, is made of lignin(木素质）, which can be obtained from soft tissues of wood. Once mixed with several other matenals, it turns into solid and non-toxic alternative for plastics.
ICT team leader Emilia Regina Inone-Kauffmann said the wood-working industry separates wood into three basic components, including lignin. Lignin isn’t used for the production of paper. Specialists of ICT mixed lignin with several natural materials and thus invented the material which could be melted and molded (铸型）.
When solid, arboform looks like plastic and possesses tho qualitie of polished wood. It can be used for the production of any items. Arboform is already used for the production of car parts which require extra strength. In addition, liquid wood can be recycled repeatedly. The material preserved all of its qualities even if it’s reprocessed ten times.
However, the new invention doesn’t enjoy an extensive use due to the high content of sulfur(硫) in it. German researchers are sure to reduce the amount of sulfur by 90% very soon to make arboform usable for home needs.
【小题1】According to the passage, plastic_______.
| A．helps us to reduce the use of petrol |
| B．helps to protect our environment in some way |
| C．does harm to our society in some way |
| D．has been replaced by the newly discovered material |
| A．It is easier made from natural oil. |
| B．It is more widely used in household |
| C．It is recyclable and friendly to environment. |
| D．It contains no poisonous materials. |
| A．lignin or arboform | B．soft tissues of wood |
| C．plastics or wood | D．mixture of several materials |
| A．the material’s extensive use | B．the content of sulfur in arboform |
| C．the production cost of arboform | D．the qualities of liquid wood |
| A．introduce liquid wood which will replace plastic |
| B．show readers how to produce arboform |
| C．advertise the new material-arboform |
| D．advertise new products made of arboform |
It all starts with a tree．In fact, it starts with several trees．Since the first modern guitars were made in northern Spain over 150 years ago, crafts persons have known the wood to be used is important in making a guitar.
Every guitar is made of several different kinds of wood．Each piece is carefully chosen and then cut to fit the part of the guitar for which it is designed．The most important part of a guitar is the soundboard--the piece of wood with a large hole that lies under the strings(弦,线)．Guitar makers are careful to make the soundboard just the right shape and thickness．Then they fix stripes（长条）of wood across the inside in a special pattern, which helps strengthen the soundboard and improves the tone of the guitar.
Wood for the curvy (弯曲的) sides of the guitar must be soaked (浸湿) in water and bent over a hot iron pipe．When all the pieces of the guitar are ready, they are carefully stuck together with glue．Special woodworking tools are used to shape and smooth the neck of the guitar．The craftsperson must make sure that the neck is perfectly centered over the soundboard.
Then it is time to use varnish(亮光漆)．This brings out the beauty of the wood．Varnish also improves the sound of the guitar but too much varnish makes the guitar sound flat and dull.
Finally guitar strings are attached and tightened to make just the right musical tones．Then it’s time to play a song．(273 words)
【小题1】The best title for this passage may be _____.
| A．How to Make a Guitar | B．What a Guitar Is Made of |
| C．How to Play the Guitar | D．Where to Find the Best Guitar |
| A．people tie strings to the top of it |
| B．stripes are stuck across the inside of wood |
| C．a large hole is made in it |
| D．several pieces of wood are glued together |
| A．Soundboard | B．strings | C．neck | D．color |
| A．The beauty of the wood can’t be seen clearly. |
| B．The sound of the guitar will be flat and dull. |
| C．The tone of the guitar will be improved |
| D．A guitar will become thin |