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习全国©0所名接单元测试示范卷教学札记D.World Laughter Day and its significance.【答案与解析】本文主要介绍了“世界大笑日”这个节日的由来及其意义。24.D根据第1段第2句中的“..is intended to build up a global sense of brotherhood and friendship throughlaughter.”可知答案。25.C根据第1段第3句可知，第一次“世界大笑日”聚会于1998年在印度孟买举行；第2段前两句指出，两年后该节日聚会第一次在印度之外的地方举行。因此，这次聚会在2000年举行。26.B从最后两段作者对大笑带来的益处的介绍可以判断出，作者对此活动的态度是积极肯定的。27.D文章前两段介绍了“世界大笑日”的由来，后两段介绍了此节日的意义。CA decade ago,Grenova founder Ali Safavi was an undergraduate student working in a life sci-ences lab.He was struck by the obscrvation that cach time a plastic pipette (was uscd,it'dbe thrown in the trash.However,as Safavi realized,this practice is wasteful,both financially andenvironmentally."We'd throw away all plastic after one use,"he says."I saw we couldn't carryon like this,especially as the industry continues to grow.Safavi figured there was a better way to address the issue.His goal was to invent a machine towash pipettes so thoroughly that they'd be as good as new.In 2012,he completed a master's degree at Duke University,and in 2013,he secured an initial investor for his project.Midwaythrough20l4,he had his first prototype(原型机)，and by20l5,the first machine was on themarket.Safavi's Richmond-based business was open,with a mission to reduce consumable plasticwaste.He has ten patents on his technology,including two machines marketed as the TipNovus andthe TipLumis."The invention doesn't just help the environment but also cuts down costs for tes-ting labs,Safavi explains."If you make the initial purchase,there's a significant long-term costreduction,because you needn't keep buying new pipettes."Besides providing solutions for more types of plastic,Safavi says he feels good to create jobs,especially in the Richmond area."I didn't know much about Richmond until the investor contactedme,and she told me I had to come see it,he says."I fell in love with the citya university in themiddle of town,the river passing through,the historical districts,the culture and the people.Ithas the feel of a big city,without the costs or traffic you see elsewhere.28.What made Ali Safavi get the idea of launching his project?A.The growth of the industry.B.The misuse of plastic pipettesC.His research into life sciences.D.His witnessing lab plastic waste.29.What does the underlined word "address"in paragraph 2 mean?A.Solve.B.Stress.C.Explain.D.Predict.30.What is Ali Safavi mainly talking about in paragraph 3?A.The purposes of his project.B.His eco-friendly invention.C.The significance of his invention.D.The development of the technology.【23新教材·DY·英语-YLB-选择性必修第三册-QG】31
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