2022 英语周报 高三 新课程 46答案

20.解:延长AD,过C作CO⊥AD,交AD于O′;过C作CE⊥AB,交AB于E;过D作DF⊥CE,交CE于(2分)(1)n=OC, r2=AB, h, mOD, h2 OA,LCD,G=CB,∴∠ADC=120°,∴∠CDF=30°在Rt△CDF中,CD=2,∴CF=1,DF=√3,∴h1=1,l1=2.∴h2=CF DA=2.

C本文是一篇说明文。研究者们发明了二种app,目的是解决道路的安全问题28.B推理判断题。根据第一段第一句“Adgmap which shows you the safest way to ghome, rather than just the quickestbeen developed by Cardiff Universityprevent the rise in pedestrian deaths.知,理想的电子地图应该为人们提供最安全到达目的地的路线。故选B。29.C细节理解题。根据第三段最后一句“Thaim of the study was to invent a fancy waof dealing with the rising number of pedestrian casualties that are occurring on ouoads each year."”可知,研究者发明这种新app的目的是通过用一种新方法来解决道路安全问题。故选C。0.B推理判断题。根据第四段第四句“ Of thos15 cities. Liverpool was ranked as havingthe most unsafe roads whereas Bath wasseen to have the safest.”可推知,利物浦的行人死亡数量是最多的。故选B。31.C观点态度题。根据最后一段最后一句“Thresearchers believe the maps could also buseful to city planners and developers wheassessing how changes to infrastructurmay affect road safety, such as the pedtrianizing of roads or the changing of可知,作者认为新研发的app在保道路安全方面很有效。故选C

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