体裁：说明文　话题：现代科技　时间：8分钟s of the 20th century.However，it may soon be replaced.The new development—liquid wood—can replace plastics in all branches of modern 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.Finallyrials for many years ahead.Norbert Eisenfreich，a senior researcher at

　　the Faunhofer Institute for Chemical Technology (ICT) in Germany，said that arboform，the new material，is made of lignin (木质素) with several other materials，it turns into solid and non－toxic alternative for plastics.－Kauffmann said the wood－working industry separates wood into three basic componentsfor 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)．sed 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 sulphur (硫) in it.German researchers are sure to reduce the amount of sulphur by 90 percent very soon to make arboform usable for home needs.【语篇导读】　塑料制品是20世纪最重要的发明之一但因为其缺点与不足将被另外一种全新的材料所取代。________．reduce the use of petrol

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