2．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（木素質(zhì)），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 （鑄型）．
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．

71．According to the passage，plasticC．
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D．has been replaced by the newly discovered material
72．What's the advantage of arboform over plastic？C
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．
73．The underlined word"altemative"in Paragraph 3meansD．
A．lignin or arboform
B．soft tissues of wood
C．plastics or wood
D．mixture of several materials
74．It can be concluded that German researchers will focus their future work firstly onB．
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
75．The main purpose of the text is toA．
A．introduce liquid wood which will replace plastic
B．show readers how to produce arboform
C．a(chǎn)dvertise the new material-arboform
D．a(chǎn)dvertise new products made of arboform．

分析 本文是一篇科教類閱讀，主要介紹一種將會取代塑料的新產(chǎn)品--liquid wood．

解答 71-75 CCDBA
71題答案：C考查細(xì)節(jié)推理，根據(jù)文章第二段中的Secondly，it contains toxins （毒物） helping develop cancerous diseases．其次，塑料含有致癌物．可知本題答案為C選項(xiàng)．
72題答案：C考查細(xì)節(jié)推理，根據(jù)原文第三段it turns into solid and non-toxic  alternative  for plastic及第五段的In addition，liquid wood can be recycled repeatedly．"它變?yōu)榱斯腆w和塑料的無毒替代品"及第五段的"另外，liquid wood（即arboform這種材料）能夠被重復(fù)回收"可知本題答案為C選項(xiàng)．
74題答案：D考查細(xì)節(jié)推理，根據(jù)前面的Once mixed with several other matenals，it turns into…"一旦與幾種其它材料混合，它就變成了…"．可知alternative指的是"幾種材料的混合物"，故本題答案為D選項(xiàng)．
73題答案：B考查細(xì)節(jié)推理，根據(jù)原文最后一句German researchers are sure to reduce the amount of sulfur by 90% very soon to make arboform usable for home needs．德國研究者一定會很快減少90%的硫含量來使arboform這種材料可用于家庭必需品．可知本題答案為B選項(xiàng)．
75題答案：A考查主旨代替，文章主要是向讀者介紹了一種將會取代塑料的新產(chǎn)品--liquid wood．故本題答案為A選項(xiàng)．

點(diǎn)評 本文是一篇科教類閱讀，題目涉及多道細(xì)節(jié)理解題，做題時(shí)結(jié)合原文和題目有針對 性找出相關(guān)語句進(jìn)行仔細(xì)分析，結(jié)合選項(xiàng)選出正確答案．推理判斷也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確的答案．

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科目：高中英語 來源： 題型：閱讀理解

11．The massive 8.8quake，the seventh strongest in recorded history，hit Chile and should have shortened the length of an Earth day by 1.26milliseconds，More impressive is how much the quake shifted the Earth's axis（地軸）．The computer mode!Used to determine the effects of the Chile earthquake effect also found that it should have moved the Earth's figure axis by about 8cm．The Earth's figure figure axis is not the same as its north-south axis，which Earth turns around once every day at a speed of about 1，604kph．The figure axis is the axis around which the Earth's mass is balanced．It is offset（偏離） from the Earth's north-south axis by about 10meters．
Strong earthquakes can change Earth's days and its axis．The 9.1Sumatran earthquake in 2004，which set off a deadly tsunami（海嘯），should have shortened Earth's days by 0.0068milliseconds and shifted its axis by about 7cm．
One Earth day is about 24hours long．Over the course of a year，the length of a day normally changes gradually by one millisecond，It increases in the winter when Earth more slowly，and decreases in the summer．
The Chile earthquake was much smaller than the Sumatran quake，but its effects on the Earth are larger because of its location．The fault（斷層） responsible for the 2010Chile quake also cuts through Earth at a larger angle that the Sumatran quake's fault．This makes the Chile fault ore effective in moving the Earth's mass vertically and hence more effective in shifting the Earth's figure axis．
The findings are based on early date available on the Chile earthquake．The Chile earthquake has killed more than 700people and cause widespread damage in the South American country．

64．What's the biggest problem caused by the Chile quake？C
A．It is the seventh strongest in recorded history．
B．It should have shortened the length of an Earth day．
C．It shifted the Earth's axis．
D．It made the day longer on Earth．
65．Comparing the Sumatram earthquake with the Chile earthquake，we know thatB．
A．the Sumatram earthquake had more effect on Earth
B．the location of the Chile earthquake is responsible for its larger effects on Earth．
C．the Sumatram earthquake was less destructive
D．the Chile earthquake fault changed the Earth's mass
66．What does the word"it"in the 4th paragraph refer to？A
A．The leng of a day．  B．The axis．
C．One millisecond．    D．The change of the day．

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科目：高中英語 來源： 題型：選擇題

12．_________ the progress of science and technology，the discomfort of old age will no doubt always be with us．（　�。�
A．As forB．In addition toC．Except forD．In spite of

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