英语必修5课本答案.docx
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英语必修5课本答案
英语必修5课本答案
【篇一:
人教版高中英语必修五workbook练习答案及听力原文】
t>unit1warmingup?
answers:
1archimedes,ancientgreek(287-212bc)hewasamathematician.hefoundthatifyouputanobjectintowaterthewaterpushestheobjectup.itrisesandpartlyfloats.theforceofthewaterpushingitupisthesameastheweightoftheobject.2charlesdarwin,british(1808-1882)theoriginofspecieswaspublishedin1859.itexplainedhowplantsandanimalshadchangedovertimetofitinwithachangingenvironment.atthetimeitwaspublisheditwasverycontroversial.manypeoplebelievedthebiblewhenitsaidthatgodmadethefirsttwopeople(adamandeve)andthatallotherpeoplecamefromthesetwo.darwin’sbookshowedthatpeoplehaddevelopedfromapesinstead.sothiscausedalotofargumentbetweenreligiousandscientificpeople.howeverdarwin’sideabecameveryinfluentialandisstillacceptedtoday.3thomasnewcomen,british(1663-1729)heimprovedthefirststeampumpbuiltbythomassaveryin1698andturneditintoasteamenginefortakingwateroutofminesin1712.jameswattimproveditstillfurtherinthe1770sturningitintothefirstmodernsteamengineusedontherailways.4gregormendel,czech(1822-1884)hegrewpeaplantsanddevelopedideasonheredityandinheritedcharacteristics.heconcentratedoncross-fertilisingpeaplantsandanalyzingtheresults.between1856-1863hegrew28,000peaplants.heexaminedsevenkindsofseedandplantcharacteristicsanddevelopedsomelawsofinheritance.thefirstisthatinheritancefactorsdonotcombinebutarepassedtothenextgenerationintact.second,hefoundthateachpartnergiveshalftheinheritedfactorstotheyoung.third,someofthesefactorsshowupintheoffspring(andsoaredominant).theotherfactorsaremaskedbythedominantones(andsoarerecessive).5mariecurie,polishandfrench(1867-1934)shewasborninpolandandcametostudyinfrancein1891andshelivedtherefortherestofherlife.in1898shediscoveredradium.shereceivedtwonobelprizes,one(withpierrecurie)forphysics(1903)andoneforchemistry(1911).sheistheonlypersontohavebeensohonoured.onthedeathofherhusbandshetookoverhisjobatthesorbonneinparis.herworkonradioactivityandthediscoveryofradiummeantthatshebegananewscientificareaofresearch.shewasthefirstwomantoreceiveanobelprizeandthefirstwomantoteachatthesorbonne.6thomasedison,american(1847-1931)hewasalreadyaninventorofotherelectricaldevices(phonograph,electriclightbulb)whenin1882hedesignedasystemforprovidingnewyorkwithelectricityfromacentralpowerstation.thiswasatremendousachievement,whichhadpreviouslybeenthoughtimpossible.7leonardodavinci
italian(1452-1519)he
wasafamousartistwhoseskillforshowinghumanskintonesmadehispaintingsseemtocomealive.heusedtostudydeadpeopleinordertomakehispaintingsasaccurateaspossibile.someofhisfamouspaintingsinclude“theadorationofthemagi”andthe“thelastsupper”.laterinhislifehelivedinfrancewherehedesignedasubmarineandaflyingmachine.
8sirhumphrydavy,british(1778-1829)hedidresearchintodifferentgasesanddiscoveredthemedicinalvalueofnitrousoxide(orlaughinggas)asananaesthetic.in1815hedevelopedasafetylampforminers.previouslytherehadbeenmanyaccidentswhencandlesontheminers’helmetshadexplodedwhenitcameintocontactwithundergroundgasfromthecoaltheminersweredigging.thesafetyhelmetmadeworkingundergroundverymuchsafer.
9zhangheng,chinese(78-139)heinventedthefirstseismographtoindicateinthedirectionofanearthquake.itwasintheshapeofacylinderwitheightdragonheadsroundthetop,eachwithaballinitsmouth.aroundthebottomwereeightfrogsdirectlyunderadragon’shead.whenanearthquakeoccurred,aballfelloutofthedragon’smouth,makinganoise.
10stephenhawking,british(1942-)hehasworkedinastronomyandstudiedblackholesinspace.hehasshownthatblackholesdonotonlyabsorbeverythingaroundthembut,fromtimetotime,throwoutmatteraswell.thismaymarkthebeginningofnewgalaxies.thisisanadvanceontheoldtheorywhichsaidthatblackholes“eat”everythingtheycomeacross.comprehending
?
answerkeyforexercise1:
1anoutbreakofcholerahitlondonin1854.
2johnsnowbegantotesttwotheories.3johnsnowinvestigatedtwostreetswhere
theoutbreakwasverysevere.
4johnsnowmarkedthedeathsonamap.5hefoundthatmostofthedeathswerenearawaterpump.
6hehadthehandleremovedfromthewaterpump.
7heannouncedthatthewatercarriedthedisease.
8kingcholerawasdefeated.?
answerkeyforexercise2:
1johnsnowfinallyprovedhisideabecausehefoundanoutbreakthatwasclearlyrelatedtocholera,collected