懂你英语Level 3 unit 2Word下载.docx
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Three.-
-Whathappenswhenweheatasubstance?
themoleculesmovefasterandtrytotakeupmorespace.
-Whathappensifwecoolaliquidtoitsfreezingpoint?
Itbecomesasolid.
Inasolid,themoleculesmoveverylittle.
Theirpositionsarealmostfixed.
Tobefixedmeansthattheirpositionsdontchange.
Ifweheatthemolecules,theymovefasterandawayfromeachother.
Thesolidbeginstomelt,likeicecreamonahotday.
-Howcanwechangeasolidintoaliquid?
heatitup.
-Howcanwechangealiquidintoasolid?
coolitdown.-
Atacertaintemperature,asolidbeginstochangeintoaliquid.
Thetemperatureatwhichasolidchangesintoaliquiddependsonthesubstances.
Forwater,thesolidbeginstochangeintoaliquidwhenitstemperaturerisestoabove0degreesCelsius.
Forsomesubstances,suchassteel,thetemperatureatwhichitbecomesaliquidismuchhigher.
Steeloftenmeltsataround1370degreesCelsius.
-Atwhattemperaturedoesicebegintomelt?
Above0degreeCelsius.
-Whatdoesthetemperatureatwhichasubstancebeginstomeltdependon?
Thesubstances.
Ifwecontinuetoheataliquid,themoleculesmoveevenfaster.
Atacertaintemperature,theliquidbeginstochangeintoagas.
Forwater,theliquidbeginstochangeintoagasat100degreesCelsius.
Thatistheboilingpointofwater.
-Whathappensifwecontinuetoheataliquid?
Moleculesmoveevenfaster.
Insideastar,suchasoursun,thetemperatureisveryhigh.
Everythinginsidethesunisagas.
Accordingtoscientists,thereareover65elementsinsidethesun.
Theseincludeoxygenandiron.
Over90%ofthesunishydrogengas.
-Howmanyelementsareinsidethesun?
Morethan65
Yesterday,therewasanimportantsciencetest.
Lisa,Tomand20otherclassmatestookthetest.
Thetestisaboutthestatesofmatterandhowtheyaredifferent.
Therewere25questionsonthetextandtherehad45minutestotakeit.
Herearesomeofthetestresult.
2studentsgotperfectscores.
Thelowestscorewas68outof100.
Theaveragescorewas86.3.
11studentsscorehigherthanaverage.
11studentshavebelowtheaveragescores.
Tommissed2questiononthetestsohisscorewas92.
Hisscorewas8highestintheclass.
Lisamissed2andahalfquestionsoherscoreis90.
Herscoreis10highestscore.
Herscoreis4pointshigherthantheaveragescore.
Lisawasdisappointedwithhertestresults.
Shestudiedhardforthetestbutshestilldidntdowell.
Asaresult,sheplanstostudyharderfornexttest.
Thenexttestwillbeinabout2weeks.
Tomwassurprisedandhappywithhisresults.
Hedidntstudyhardsohisresultwasbetterthanheexpected.
HewasalsohappythathedidbetterthanLisadid.
Vocabulary
Sheisscreamingbecausesheisreallyscared.
Somethingischasinghersosheisscreamingforhelp.
Heisshoutingbecauseheisangry.
Whenhesreallyangryheoftenshoutslikethis.
Sheissleepingbecauseshestired.
Lastnightshedidntgetenoughsleep,sotodayshehasnoenergy.
Shescryingbecauseshessad.
Shegotsomebadnewsafewminutesago.
Shessmilingbecausesheshappy.
Herboyfriendjustcalledandhesreturningfromalongtrip.
Whoissmilingbecauseshegotsomegoodnews?
Thismanishikingupamountaintrail.
Heiswearinghikingbootsandiscarryingapackonhisback.
Thismanenjoyscooking.
Heattendsacookingclassonceaweek.
Thiswomanenjoysgardening.
Shegrowsflowers,suchasroses,andvegetables,suchastomatoes,inhergarden.
Thisboylovesplayinggames.
Helikesallkindsofgames,includingthisvideogamesonhiscomputer.
Thisoldcoupleenjoystravelling.
Theytakeseveraltripsayear,oftentodifferentcountries
Dialogue
W:
Oh,thereyouare,finally.
M:
Yeah,Imsorry.
Whyareyousolate?
Youweresupposedtobehere30minutesago.
Igotonthewrongsubwaybymistake.
-Whenwashesupposedtobethere?
-30minutesago.
-Whywashelate?
Hetookthewrongsubway.
Whydidntyoucall?
Iwasreallyworried.
Idonthavemyphone.IleftitintheofficebecauseIwasinsuchahurrytogethere.
OK,well,youreherenow.Wedonthavemuchtime.
Yes,wellhavetohurry.Themeetingstartsin15minutes,right?
Yes,itssupposedto,ifeveryonegetshereontime.
-Whenisthemeetingsupposedtostart?
in15minutes.
-Tohurrymeans..
Togofast.
Didyoureadmypresentation?
Yes,Ido.Itsgood,butitsabittoolong.Imafraidtherewontbeenoughtimeforquestions.
Doyouhaveanysuggestions?
Yes,Ido.Ithinkthecompanyintroductioncanbecutinhalf.Theyknowwhatwedo.
OK,Iwontshowthevideo.Itsabout2minuteslong.
Thatsagoodidea.Thevideoisonourwebsiteandisnotthatgoodanyway.
-Whatisshegoingtocutfromherpresentation?
thevideo.-
-Whyisthepresentationabittoolong?
Thereisntenoughtimeforquestions.
No,Idont.Imsureyouredoingagreatjob.Areyouready?
Yes,Imready.Themeetingroomisonthe21stfloor.
OK,letsgo.
-Whereisthemeetinggoingtobe?
inameetingroom.-
Shesreadytogiveherpresentationatthemeeting.
Lisa:
Howdidyoudoonyesterdayssciencetest?
Tom:
Ididbetterthanexpected.Howaboutyou?
Ididntdoverywell.IexpectedtodobetterthanIdid.
Whatwasyourscore?
Igota90.Whataboutyou?
Igota92.Ionlymissedtwoquestions.
-Howwelldidhedoonthetest?
Hedidbetterthanexpected.
Shedidntdoaswellassheexpected.
SoyoudidbetterthanIdid.AndIreallystudyforittoo.
Thatisasurprise.YouusuallydobetterthanIdo.
Yes,Iwasntcareful.Imadeonereallystupidmistake.
Whatwasit?
Isaid90%ofthesunisHeliuminsteadofHydrogen.
Wow.Thatwasastupidmistake.
-Whywashesurprisedbytheresult?
Hedidbetterthanshedid.
Whatwastheaveragescorefortheclass,doyouknow?
Theaveragescorewas86.3andthelowestwas68.
Doyouknowwhogotthelowesttestscore?
No,Idont.Idontknowwhogotthelowestscore.
Itsprobablyasecret.Didanyonegetaperfectscore?
IthinkAdaandSandibothgotperfectscore.
Yes,theyalwaysdowell.IwishIwereassmartastheyare.
-Whatwastheaveragetestscore?
-86.3
Level3unit1part2
InsixweeksPaulisgoingonatrip.
HeisgoingtoJapanandChina.
Thereareacoupleofreasonsforthetrip.
Onereasonisforbusiness.
Heisthinkingaboutstartingrestaurantsinbothcountries.
Theotherreasonisforpleasure.
Heenjoystravellingandhedliketovisitsomefriends.
-Whatsgoingtohappeninsixweeks?
Heisgoingonatrip.
-Whatishethinkingaboutstartinginbothcountries?
Heisthinkingaboutstartingrestaurants.
Yesterdayhewentonlineandmadeairlinereservations.
Therewereplentyofseatsontheplane,soitwaseasy.
Healsogotagooddiscount.
Unfortunately,heneedsanewpassport.
Hisoldpassportisexpiringnextweek.
Thisissomethinghedidntexpect.
Gettinganewpassportwilltakeatleastaweek.
Heneedstoapplyforonerightaway.
-Whydidheneedtogetanewpassport?
Hisoldoneisexpiringsoon.
-Whatdidheneedtodorightaway?
applyforanewpassport.
-Howlongwillittaketogetanewpassport?
Atleastaweek.
PaulalsoneedsavisatoenterChina.
ThelasttimehewenttoChinawas3yearsago.3
Gettingavisamayalsotakeaweekoreventwo.
Sohedoesnthavemuchtime.
Heneedstohurry.
Hecantgetthevisauntilhegetshisnewpassport.
HellhavetogototheChineseconsulateinToronto.
Hopefullytherewontbeanydelays.
-Whatmaytakeaweekortwo?
gettingavisa.
-WhenwasthelasttimehewenttoChina?
-3yearsago.
Paulhasseveralfriendsineachcountry.
OneofhisbestfriendslivesnearMountainFuji.
Hisfriendlivesnearabeautifullakeabout3hoursfromTokyo.
Hisfriendisagreatcookandownsalittlerestaurant.
Therestaurantislocatedonahillabovethelake.
Ithasawonderfulviewandthefoodiswonderful.
Paulislookingforwardtoeatingthere.
Thenhewillspendthenightathisfriendshouse.
-WhereisPaulgoingtostay?
Hellstayathisfriendshouse.
-Whatdoeshisfrienddo?
Heownsarestaurant.
Onewaytogettohisfriendshouseistogobytrain.
Ifhetakesatrainhisfriendwillmeethimatthetrainstation.
Theresatrainstationabouthalfanhourfromhisfriendshouse.
Ontheotherhandhemaydecidetogobycar.
Hecanrentacarforafewdaysandseemoreofthecountry.