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28.What highlights Candiani according to Paragraph 1?A.It has a great founder.B.It creates greener fabries.C.It is a family-run business.D.It makes jeans at a lower cost29.What do we know about the innovative denim?A.It can last for six months.B.It is made of recycled materials.C.It can be reused for growing plants.D.It turns into soil under the forest land.30.What are the figures in Paragraph 3 mainly about?A.The popularity of jeans in the world.B.The possible reasons for global warming.C.The complex process of manufacturing jeans.D.The effects of producing jeans on the environment.31.Candiani's innovation may be an example ofA.robbing Peter to pay PaulB.putting the eart before the horseC.killing two birds with one stoneD.solving the problem once and for allDAlthough the weather is very hot now,the carnival of ice and snow is getting closer.Thepreparation work for Beijing Winter Olympic Games,which are expected to begin on Feb 4.2022.has entered its final stage.In January,2021,the ice-making work on the"Ice Ribbon "alandmark venue for the Beijing Winter Olympics,was completed.In the Winter Olympics,where races can be won or lost by a small time gap,tinyimperfections in the ice can make all the difference."It's not just a block of ice like you'd normallythink of,like ice cubes sitting in your freezer,"told Kenneth Golden,a US mathematician whostudies the structures of ice."It's a much more fascinating and complex substance than peoplewould normally think.The first step for building any ice rink (is to purify the water to remove dissolvedsolids like salts andminerals..Such impurities don't fit in the regular hexagonal(六边形的)structure of ice that forms as water freezes.The more pure the water is,the more consistent the icesurface.In addition to the need for excellence in the raw materials of ice-making,technology is alsovery important.As one of the most advanced technologies for winter sports venues,a carbon dioxide(CO.)cooling technology has been applied on a large scale for the Beijing Winter Olympie Games.CO is not new when it comes to ice-making.However,it has been gradually replaced by the man-made refrigerant,like Freon.With increasing attention toward climate change,the old refrigerant has come into use again.As an element of the atmosphere,CO doesn't damage the ozone layer.Although CO,is agreenhouse gas,its greenhouse effect is much lower than that of other synthetic refrigerants.TheWinter Olympics v adopted CO instead of Freon asa refrigerant in ice-making,which willreduce carbon dioxide emissn greatly高二英语试题第6页（共10页）