TPO42综合写作.doc

《TPO42综合写作.doc》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Threesolutionsareproposedinthereadingpassagetopreventinjuriescausedbyglassusedtobirdsinthebuildings.However,theprofessorinthelecturecontradictsallofthem.Firstofall,theauthorarguesthattheregular,clearglasscanbereplacedbyone-wayglass,sothatthebirdscannotseethroughfromoutsideandthuswillnotflyt

2、hroughtheglasswindow.Bycontrast,theprofessorrefutesthissolutionbyclaimingthattheone-wayglassactuallyworksasamirrorwhenseenfromoutside,whoseimpactwillbeasbadastheregularglassbecausebirdsdonotunderstandthefunctionsofmirror,onwhosesurfacetreesandtheskywillbereflected,sobirdswillthinkitisthesam

3、easthenaturalworld.Second,theauthorstatesthatarchitectscanpaintcolorfullinesanddesignsonregularglasswindow,andwhenbirdsseethestripesfromoutside,theywillavoidflyingthroughthewindow.Onthecontrary,theprofessormaintainsthatevenwithcolorfuldesignstherewillbeunpaintedopeningsonthewindowlookingjus

4、tlikeopenholes,sobirdsmaystillflythroughthoseholes.Inordertopreventitfromhappening,theunpaintedspacesmustbesmallenough.Butinthiscase,theroomwillbetoodark.Third,thereadingproposesthathumanscaninstallartificialmagneticfieldonbuildingtohelpbirdsnavigateawayfrombuildings.However,theprofessorins

5、iststhatbirdsactuallyusemagneticsignalstonavigateonlywhentheymigratealongwaysuchaswhentheymigratefromcoldareastowarmareasduringspring.Butiftheyareonashorttrip,theywouldrelyontheireyestonavigate.Sothemagneticdevicewillnotbeeffective,either.