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1、Unit8Lesson22FamousDiscoveriesHaveyouseenthispicture?Whatsthis?Warm-upNASAon23rd,JulyannouncedthediscoveryofKepler-452b,themostEarth-likeplaneteverfound.Located1,400light-yearsfromourplanet,NASAcalledit“Earth2.0”,becauseitsthefirstplanetdiscoveredinthehabitablezoneofaGstarsimilartooursun.7月23日，美国国家航
2、空航天局(简称为NASA)宣布发现开普勒-452b，是迄今为止与地球最为相近的行星。该行星距离地球1400光年，NASA将其命名为“地球2.0”，因为它是第一颗人类在宜居带里与太阳相似的恒星附近发现的行星。1.与太阳相似的恒星被发现这颗系外行星编号Kepler452b，其直径约为地球的1.6倍，与恒星之间的距离与日-地距离相近。恒星Kepler452距离地球大约430秒差距(约合1400光年)，位于天鹅座。天文学家称，这是至今为止发现的最接近地球的“孪生星球”，跟地球的相似指数为0.98，并且有可能拥有大气层和流动水。NASA说这个星球上可能有活火山，有存在生命的可能性，行星应该有60亿年历史
3、，地球为45亿年。Aninternationalteamofscientistssaidtheyhavediscoveredthefarthestgalaxyevermeasuredintheuniverse.ByusingapowerfulinstrumentcalledMOSFIREontheKeckItelescopeattheKeckObservatoryinHawaii,theteamthoughtthatthegalaxy,EGS-zs8-1,formedmorethan13billionyearsagoatatimewhentheuniversewasonlyfivepercen
4、tofitspresentage.科学家使用位于夏威夷的凯克天文台的望远镜发现了新星系，并将这个星系命名为EGS-zs8-1。它是迄今发现的最遥远星系，打破了此前的观测纪录。2.宇宙中最遥远星系被发现1.Whatarethepeopledoinginthefollowingpictures?2.Whatdoyouthinktheyaretryingtodiscover?Example:IthinkthepersoninPhotoAisobservingthestars.Maybeheistryingtodiscoveranewstar.KeyWords:Discoverieschemistry
5、,doexperiments,electricity,health,lab,machine,observe,physics,research,space,technologyListenandpractice.1.Doyouknowanyotherscientificdiscoveries?2.Canyounamesomefamousones?3.Amongthesediscoveries,whichdoyouthinkarethemostimportantones?Lookatyourworksheetafterclass.PPT(2632)Doyouknowanyofthem?Whatst
6、heirmajorachievements?TuYouyouhasbecomethefirstChinesewomantowinaNobelPrize(2015),forherworkinhelpingtocreateananti-malaria(ntimleri抗疟疾的)medicine.屠呦呦(1930-)药学家抗疟疾:青蒿素和双氢青蒿素Readingandmatch2.Manychildrendiedveryyoungbecauseofdifferentdiseases.Nowitcanbecured(治愈)easilywithit.Look!Guess1.Itsadiscoveryin
7、physics（身体）.Itcangorightthroughsomethingslikeskin(皮肤）andwoodbutstopbybonesormetal.3.Itsthebuildingblockoflifeandweknowagreatdealaboutwhatwegetfromourparentsfromit.ABCReadandfindthenameofthepictureA,BandCandmakesurewhetheryourmatchisrightornot.X-rayDNAantibioticsThefirstantibiotic:Penicillin青霉素，盘尼西林
8、It can wipe out the infection消除感染AlexanderFleming亚历山大弗莱明EventYearThestructureofDNAwasdiscovered.WilhelmRoentgenreceivedtheNobelPrize.ScientistsdiscoveredDNA.1953Whendidthesethingshappen?Writethecorrectyears.19011869DNAstructuredoublecoiledspiralstructure(双线圈螺旋结构）CrickWatson克里克沃森WilhelmRoentgenX-ray1
9、845-1923Germany威廉伦琴Whateffectdothesediscoverieshave?discoverieseffectAntibioticsDNAX-raysAlotofdiseasescanbecuredeasilywithit.passoncertaincharacteristics,beabletotreatmoredisease.DoctorstreatbrokenboneseasilywithX-raysmachines.ThreediscoveriesDNA(Crick&Watson)X-rays(WilhelmRoentgen)1.thebuildingblo
10、ckoflife2.passoncertaincharacteristics3.beabletotreatmorediseaseDoctorstreatbrokenboneseasilywithX-raysmachines.ThetextisaboutAlotofdiseasescanbecuredeasilywithit.Antibiotics(Fleming)effectCanyouanswerthesequestions?Finish them on the worksheet.1.Whatcancurealotofdiseaseseasily?2.Whatpassedoncertain
11、characteristicsfromparentstochildren?3.WhatcanscientistsknowfromthemapofourDNA?4.WhowasthefirsttostudyandnameX-ray?5.WhatprizedidthediscovererofX-rayaward?Answer the following questionsAntibiotics,X-rays.(DNA,maybeinthefuture.)1.Whatcancurealotofdiseaseseasily?2.Whatpassedoncertaincharacteristicsfro
12、mparentstochildren?3.WhatcanscientistsknowfromthemapofourDNA?DNA.Ittellsthemagreatdealaboutwhatgetfromourparents.4.WhowasthefirsttostudyandnameX-ray?5.WhatprizedidthediscovererofX-rayaward?WilhelmRoentgen.Thefirst-everNobelPrizeinPhysics.1. cure vt. 治愈； 矫正； 解决； 消除He needed surgery to cure a troubles
13、ome back injury.2. block n. 块； 街区； 障碍物，阻碍She walked four blocks down High Street.There is a block of ice.Languagepoints3. pass on 传递； 去世； 前进； 对发表（意见）He has written a note asking me to pass on his thanks. 4. treat v. 对待； 治疗； 处理； 款待Doctors treated her with aspirin.1.IfMaryshandiscutbyaknifefor3days,wh
14、atwillshedo?2.IfyourleggetshurtinP.E,whatshouldyoudo?3.Ifyouhaveaheadache,whatcanyoudo?4.“Doctor,canyouexplainwhatantibioticisforme?”asksonepatient.Ifyoureadoctor,Pleasetreat!(PairWork)ProblemsPairworkWhichdiscoverydoyouthinkisthemostimportantaccordingtothetext?Group Work Group Work Example:A:IthinkX-raysarethemostimportantdiscovery.B:Why?A:BecausewithX-rays,doctorscanhelpfixbrokenbonesmoreeasily.1.FinishExercisebook.2.Ifyouliveinschoolortravelaroundformorethan10days,whatwillyoutakeinyourmedicinebag（急救包）急救包）?Discusswithyourpartner,andwritedownontheworksheet.Homework
