When solid arboform looks like plastic and possesses the qualities of wood, it can be used for the production of any items.
Arboform is already used for the production of car parts.However, the new invention does not enjoy a wide use due to the high content of sulphur(硫) in it.German researchers believe that they will be able to reduce the amount of sulphur by 90 percent very soon to make arboform usable for home needs.
In addition, liquid wood can be recycled repeatedly.The analysis of arboform showed that the material had all of its qualities even if it was reprocessed ten times.
【语篇解读】 尽管塑料是20世纪最重要的科技发明之一,但德国科学家确信它很快就会被一种新型原料所代替,你知道这种原料是什么吗?
21.From the passage we learn that liquid wood ________.
A.has replaced plastic
B.is made from natural oil
C.has been widely used in householdD.can be recycled repeatedly
答案 D [细节理解题。根据最后一段第一句liquid wood can be recycled repeatedly可知D项正确。]
22.It can be concluded that German researchers will focus their future work firstly on the ________.
A.material's wide useB.content of sulphur in arboform
C.production cost of arboformD.qualities of liquid wood
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