概括大意與完成句子隨堂講義

講義打印注意事項(xiàng)：如右圖所示：點(diǎn)擊打印之后會(huì)出現(xiàn)右圖的選項(xiàng)卡，在打印內(nèi)容那一欄里選擇講義，在顏色/灰度那一欄里選擇純黑白，在每頁(yè)幻燈片數(shù)那一欄選6，然后點(diǎn)擊確定即可打印。職稱英語(yǔ)概括大意與完成句子主講老師付欣一篇文章出兩種題型概括大意4分完成句子 4分

8分題型概述這篇文章是國(guó)家指定教材外的文章。一.概括大意二.完成句子三.概括大意與完成句子__方法技巧練習(xí)四.概括大意與完成句子__復(fù)習(xí)策略概括大意與完成句子__課程講解目錄1、題型特點(diǎn)2、做題方法3、文章練習(xí)1、題型特點(diǎn)2、做題方法3、文章練習(xí)一.概括大意（一）題型特點(diǎn)（二）做題方法（三）文章練習(xí)概括大意__目錄概括大意__題型特點(diǎn)（一）題型特點(diǎn) 文章4段的中心思想。 注意： 1）選項(xiàng)的特點(diǎn)——從6個(gè)被選答案中選出4個(gè)

正確答案。有2個(gè)是錯(cuò)誤的答案。 2）文章的長(zhǎng)度一般是4-5段。（二）做題方法 1.看標(biāo)題 2.看問(wèn)哪4段并做記號(hào) 3.分析A—F選項(xiàng)或先看問(wèn)的那4段然后再去對(duì)A—F選項(xiàng)。 4.分析完之后到問(wèn)的那4段中找答案 5.注意事項(xiàng)概括大意__做題方法匯總

1.看標(biāo)題：根據(jù)自己的情況可以查字典也可以不查字典。

例：EarthAngels概括大意__做題方法12.看問(wèn)哪4段并做記號(hào)例：

看下面的文章概括大意__做題方法21JoyingBresciawas8yearsoldwhenshenoticedthatcigarettebutts(煙頭)werelitteringherhometownbeachinIsleofPalms,SouthCarolina.Whenshelearnedthatittakesfiveyearsfortheremainsofacigarettetodisintegrate,shedecidedtotakeaction.Joyinglauncheda“NoButtsontheBeach”campaign.Sheraisedmoneyandawarenessabouttheneedtokeepthebeachesclean.

概括大意__做題方法2Withthehelpofothers,Joyingalsoboughtorreceiveddonationsofgallonsizeplasticice-creambuckets.Thebucketswerefilledwithsand,andplacedatallpublicaccessareasofthebeach.Thebucketsallowedpeopletodisposeoftheircigarettesbeforehittingthebeach.Twoyearslater,Joyingsaysthebucketsarefullandthebeachinnearlyfreeofcigarettedebris(殘片).概括大意__做題方法22PeoplewholiveinorvisitSteamboatSprings,Colorado,haveCarterDunhamtothankforanewstatewildliferefugethatpreserves20acresofmarshlandandmanyspeciesofwildlife.CarterandotherstudentswroteamanagementplanfortheareaaroundtheYampaRiver.TheplanwaspartofaclassprojectwhenCarterwasafreshmanatSteamboatSpringsHighSchool.WorkingwiththeColoradoDivisionofWildlife,Carterandhisclassmatesmappedtheareaandspeciesofanimalslivingthere.Theyalsomadedecisionsabout,amongotherthings,wherefencesandparkingareasshouldbebuilt.概括大意__做題方法23BarbaraBrownandherfriendscollectoil.Itstartedasaprojectfortheir4HClubafteroneofthegirlsnoticedherfatherusingmotoroiltokillweedsontheirfarminVictoria,Texas.Theydidsomeresearchanddiscoveredthatoilcancontaminategroundwater—arealdangerinruralareas,wherepeopleliveoffthewaterontheirland.Thegirlsresearchedwaystorecycleoilandworkedwithalocaloilrecyclingcompanyontheissue.Now,the“Don’tBeCrude”programrunsoilcollectionsites—tanksthatholdupto460gallons—wherepeopleinthecommunitycandisposeoftheiroil.概括大意__做題方法24Fiveyearsago,11yearoldRyanHreljacwasalittleboywithabigdream:forallthepeopleinAfricatohavecleandrinkingwater.Hisdreambeganinthefirstgradewhenhelearnedthatpeopleweredyingbecausetheydidn’thavecleanwaterandthataslittleas$70couldbuildawell.“Wereallytakewaterforgranted,”saysRyan,ofKemptville,Ontario,inCanada.“Inothercountries,youhavetoplanforit.”Ryanearnedthefirst$70bydoingextrachores(零工)，butwiththehelpofothers,hehassinceraisedhundredsofthousandsofdollars.HiseffortsledtothestartoftheRyan’sWellFoundation,whichraisesmoneyforcleanwaterandhealthrelatedservicesforpeopleinAfricancountriesanddevelopingcountries.概括大意__做題方法2文章問(wèn)題：23Paragraph1___________

24Paragraph2___________

25Paragraph3___________

26Paragraph4___________概括大意__做題方法23.分析A—F選項(xiàng)或先看問(wèn)的那4段然后再去對(duì)A—F選項(xiàng)。具體講解：分析A—F選項(xiàng),分析什么？找關(guān)鍵詞。概括大意__做題方法3關(guān)鍵詞包括：名詞詞組數(shù)字年代寫法特殊的單詞形容詞副詞原級(jí)比較級(jí)和最高級(jí)動(dòng)詞概括大意__做題方法3名詞的標(biāo)志：aanthe后接名詞of兩邊是名詞名詞后綴:

-tion-sion-ness-ment -y-ence-ance寫法特殊的單詞：大寫字母的單詞有連字符的單詞有引號(hào)的單詞概括大意__做題方法34.分析完之后到問(wèn)的那4段中找答案。答案的特點(diǎn)

就是段落中的單詞與A—F選項(xiàng)的單詞一模一樣，一模一樣的單詞有一個(gè)，兩個(gè)甚至更多，或找相似的單詞。注意：詞性變了不影響選擇。概括大意__做題方法4A.ProvideCleanWaterB.DigOilWellsC.SaveCleanWaterD.Don'tLitterE.Don'tBeCrudeF.ProtectWildlife概括大意__做題方法4正確答案的出處段落的第一句，第二句和最后一句。以第一句為主。如果這三個(gè)地方?jīng)]有，往中間看，中間還沒(méi)有就不做了。這樣的題是難題，同義改寫了。

D

FＥA概括大意__做題方法4注意以下6點(diǎn)：如果A—F選項(xiàng)很短，有必要查一下你不認(rèn)識(shí)的單詞，以防同義改寫。2)詞性變化不影響選擇3)注意名詞前的修飾詞概括大意__做題方法54)如果段落中有showconcludeconclusionfindfoundsuggesttheotherwords后面一般是答案。5)如果第二句，最后一句出現(xiàn)了buthowever，以它后面的再現(xiàn)詞為主。6)如果一個(gè)選項(xiàng)的關(guān)鍵詞出現(xiàn)在兩段里，那么這兩段可以同時(shí)選這一個(gè)選項(xiàng)。概括大意__做題方法5（三）概括大意__文章練習(xí)概括大意__文章練習(xí)

ScienceFiction1Amongstthemostpopularbooksbeingwrittentodayarethosewhichareusuallyclassifiedassciencefiction.Hundredsoftitlesarepublishedeveryyearandarereadbyallkindsofpeople.Furthermore,someofthemostsuccessfulfilmsofrecentyearshavebeenbasedonsciencefictionstories.概括大意__文章練習(xí)12Itisoftenthoughtthatsciencefictionisafairlynewdevelopmentinliterature,butitsancestorscanbefoundinbookswrittenhundredsofyearsago.Thesebookswereoftenconcernedwiththepresentationofsomeformofidealsociety,athemewhichisstilloftenfoundinmodernstories.概括大意__文章練習(xí)13Mostoftheclassicsofsciencefiction,however,havebeenwrittenwithinthelasthundredyears.BooksbywriterssuchasJulesVerneandH.G.Wells,tomentionjusttwowell-knownauthors,havebeentranslatedintomanylanguages.概括大意__文章練習(xí)14Modernsciencefictionwritersdon'twriteaboutmenfromMarsorspaceadventurestories.Theyaremoreinterestedinpredictingtheresultsoftechnicaldevelopmentsonsocietyandthehumanmind;orinimaginingfutureworldswhichareareflectionoftheworldwhichweliveinnow.Becauseofthistheirwritinghasobviouspoliticalundertones.概括大意__文章練習(xí)15Inanagewheresciencefactfrequentlyovertakessciencefiction,thewritersmanyfinditdifficulttokeepaheadofscientificadvances.Thosewhoaresufficientlyclear-sightedtoseethewaywearegoing,however,mayprovideavaluablelessononhowtodealwiththeproblemswhichsocietywillinevitablyfaceasittriestomasteritsnewtechnology.概括大意__文章練習(xí)1概括大意__文章練習(xí)1文章問(wèn)題：1Paragraph1___________

2Paragraph2___________

3Paragraph3___________

4Paragraph4___________A.PopularityofScienceFictionB.AFairlyNewDevelopmentC.ClassicsofScienceFictionD.DifficultyinKeepingaheadofScientificAdventureE.ItsOriginF.ThemesofModernScienceFiction AECF概括大意__文章練習(xí)1ABaby’sGrowth1Todescribeababy'sgrowth,theoldsaying“onethingleadstoanother”shouldreallyread,“onethingleadstoanexplosion.”Theperfectionofvisionandtheabilitytoholdhisheadupallowappreciationofvisualspace.Theevolutionofincreasinglyefficientreachingalsoletsthebabyappreciateandparticipateinhisthree-dimensionalworld.概括大意__文章練習(xí)22Youmaynoticethatyourbabycangrabtoyswitheitherhand.Thisispartlybecausethebabyhaslearnedtograspanobjectevenifittoucheshishandlightlyorhiseyesareaverted.Bytheendofthefourthmonth,hecanprobablyalternatehandstograbthetoysortransferatoyfromonehandtotheother.Hemayevenwaveitbriskly,thentransferitandrepeatthewaving,shuttlingitbackandforthbetweenhands.

概括大意__文章練習(xí)2Inimitatingthebehaviorofonehandwiththeother,thebabymaybebecomingawarethathecandothesamethingwitheacharmandthateachhandisdistinctfromtheother.Thisawarenessisimportanttohisreceivinginformationaboutspace.Thebabyalsobeginstoseehimselfactwhenherepeatedlyreachesforandgraspsthings.Hestartstodistinguishhimselffromtheouterworld.

概括大意__文章練習(xí)23Ifyouwouldlikeanothersignofthisgrowthprocess,tryoneofGesell'smeasuresofmentalgrowth,thebehaviorofababybeforeamirror.AccordingtoGesell,ababywillsmileathisimageataroundtwentyweeksofage.Holdyourbabyuptoamirrorandwatchhimexaminethefacesthere.Hewillprobablyattendmosttohisownimageandperhapssmileatit.概括大意__文章練習(xí)2Ashisimagereturnsthesmile,hemaybecomeactiveandvocalize.Hemayalsolookbackandforthbetweenyourimageandyouasiftheduplicationpuzzleshim.Ababywhoknowshismother'sfacecannotunderstandtwoofthem.Callingsoftlytoyourbaby,ashelooksatyourconfusingdouble,complicatesmattersevenfurther.Histurningbacktotherealyoushowsthatababyfourmonthsoldislikelytohavetheabilityofpreferenceindiscrimination.概括大意__文章練習(xí)24Anearlyattachmenttooneobject—atoyorastuffedanimal—isanotherindexofdiscrimination,aswellasself-development,forthebaby'sinterestsaregoingbeyondhimself.Mostbabiesdonotpreferonetoythisearly,butsomewill.Afterexploringeachtoy,yourbabymaystartreachingandplayingwithonespecialone.Inthemonthstocome,thetoyoranythingelsethebabyidentifieswithhimselfbywearingorcarryingmaybecomea“l(fā)ovey”.概括大意__文章練習(xí)2A“l(fā)ovey”willbesleptwith,chewed,hugged,loved,and“talkedto.”These“l(fā)oveies”givethebabyawayofcopingwiththenecessaryseparationsfromthemother.Afriendlyandfamiliartoybearmayjustmakehimeasieronhimself.Ratherthanfeelingthreatened,amothershouldbeflatteredbyherbaby’sextensionofaffectionelsewhere.Ababywiththehearttofinda“l(fā)ovey”isshowingearlymentalresourcefulnessandflexibility.

概括大意__文章練習(xí)2概括大意__文章練習(xí)2文章問(wèn)題：1Paragraph1___________

2Paragraph2___________

3Paragraph3___________

4Paragraph4___________A.Gesell'smeasureofthebaby'smentalgrowthB.ThebabylearnstosethimselfapartfromtheouterworldthroughplayingwithtoysC.Thebaby'sconfusioninfrontofamirrorD.Significanceofonedevelopmentinababy'slifeE.Thebaby’slovefor“Loveies”indicatesearlymentalresourcefulnessandflexibilityF.Thefunctionsofa“l(fā)ovey”D B A E概括大意__文章練習(xí)2二.完成句子一.題型特點(diǎn)二.做題方法三.文章練習(xí)完成句子__目錄

1、題型特點(diǎn)：四個(gè)不完整句，從6個(gè)選項(xiàng)中選出4個(gè)正確答案。 這4個(gè)題出自文章4段，但不一定都是概括大意的那4段。完成句子__題型特點(diǎn)2、出題特點(diǎn)：第一題出自第一段，最后一題出自最后一段。第一題在第一段沒(méi)有找到就到第二段去找，如果找到了，那么第二題就從第三段找起。最后一題在最后一段中沒(méi)有，看倒數(shù)第二段。有時(shí)會(huì)出現(xiàn)一段出兩個(gè)題。1.技巧做題法 1)看題干找關(guān)鍵詞

2)再看A—F選項(xiàng)找關(guān)鍵詞 3)然后到相應(yīng)的段落找再現(xiàn)詞。 4)找到題干再現(xiàn)的所在句，把整句看完去對(duì)A—F選項(xiàng)，

有再現(xiàn)詞的就是答案。如果本句沒(méi)有再現(xiàn)詞，就看上下句，甚至整段。2.語(yǔ)法知識(shí)做題法

完成句子這個(gè)題型也可以通過(guò)語(yǔ)法，詞組和句型的知識(shí)來(lái)做題。完成句子__做題方法EarthAngels1JoyingBresciawas8yearsoldwhenshenoticedthatcigarettebutts(煙頭)werelitteringherhometownbeachinIsleofPalms,SouthCarolina.Whenshelearnedthatittakesfiveyearsfortheremainsofacigarettetodisintegrate,shedecidedtotakeaction.Joyinglauncheda“NoButtsontheBeach”campaign.Sheraisedmoneyandawarenessabouttheneedtokeepthebeachesclean.Withthehelpofothers,Joyingalso完成句子__文章練習(xí)1boughtorreceiveddonationsofgallonsizeplasticice-creambuckets.Thebucketswerefilledwithsand,andplacedatallpublicaccessareasofthebeach.Thebucketsallowedpeopletodisposeoftheircigarettesbeforehittingthebeach.Twoyearslater,Joyingsaysthebucketsarefullandthebeachinnearlyfreeofcigarettedebris(殘片).完成句子__文章練習(xí)12PeoplewholiveinorvisitSteamboatSprings,Colorado,haveCarterDunhamtothankforanewstatewildliferefugethatpreserves20acresofmarshlandandmanyspeciesofwildlife.CarterandotherstudentswroteamanagementplanfortheareaaroundtheYampaRiver.TheplanwaspartofaclassprojectwhenCarterwasafreshmanatSteamboatSpringsHighSchool.WorkingwiththeColoradoDivisionofWildlife,Carterandhisclassmatesmappedtheareaandspeciesofanimalslivingthere.Theyalsomadedecisionsabout,amongotherthings,wherefencesandparkingareasshouldbebuilt.完成句子__文章練習(xí)13BarbaraBrownandherfriendscollectoil.Itstartedasaprojectfortheir4HClubafteroneofthegirlsnoticedherfatherusingmotoroiltokillweedsontheirfarminVictoria,Texas.Theydidsomeresearchanddiscoveredthatoilcancontaminategroundwater—arealdangerinruralareas,wherepeopleliveoffthewaterontheirland.Thegirlsresearchedwaystorecycleoilandworkedwithalocaloilrecyclingcompanyontheissue.Now,the“Don’tBeCrude”programrunsoilcollectionsites—tanksthatholdupto460gallons—wherepeopleinthecommunitycandisposeoftheiroil.完成句子__文章練習(xí)14Fiveyearsago,11yearoldRyanHreljacwasalittleboywithabigdream:forallthepeopleinAfricatohavecleandrinkingwater.Hisdreambeganinthefirstgradewhenhelearnedthatpeopleweredyingbecausetheydidn’thavecleanwaterandthataslittleas$70couldbuildawell.“Wereallytakewaterforgranted,”saysRyan,ofKemptville,Ontario,inCanada.“Inothercountries,youhavetoplanforit.”

Ryanearnedthefirst$70bydoingextrachores(零工)，butwiththehelpofothers,hehassinceraisedhundredsofthousandsofdollars.HiseffortsledtothestartoftheRyan’sWellFoundation,whichraisesmoneyforcleanwaterandhealthrelatedservicesforpeopleinAfricancountriesanddevelopingcountries.完成句子__文章練習(xí)127Joyingplacedthebucketsatallpublicaccessareasto

.28PeoplearegratefultoCarterDunhamforhiseffortsto

.29Disposedoilandmanyotheritemscanbereusedto

.30Ryan,withthehelpofothers,isfulfillinghisdreamofhelpAfricanpeopleto

.完成句子__文章練習(xí)1AmakenewmaterialsBpreservewetlandandanimalsChavecleanairDhavecleanwaterEcollectcigarettebuttsFcollectdisposedoil EBAD完成句子__文章練習(xí)1

ABaby’sGrowth1Todescribeababy'sgrowth,theoldsaying“onethingleadstoanother”shouldreallyread,“onethingleadstoanexplosion.”

Theperfectionofvisionandtheabilitytoholdhisheadupallowappreciationofvisualspace.Theevolutionofincreasinglyefficientreachingalsoletsthebabyappreciateandparticipateinhisthree-dimensionalworld.完成句子__文章練習(xí)22Youmaynoticethatyourbabycangrab

toyswitheitherhand.Thisispartlybecausethebabyhaslearnedtograspanobjectevenifittoucheshishandlightlyorhiseyesareaverted.Bytheendofthefourthmonth,hecanprobablyalternatehandstograbthetoysortransferatoyfromonehandtotheother.完成句子__文章練習(xí)1Hemayevenwaveitbriskly,thentransferitandrepeatthewaving,shuttlingitbackandforthbetweenhands.Inimitatingthebehaviorofonehandwiththeother,thebabymaybebecomingawarethathecandothesamethingwitheacharmandthateachhandisdistinctfromtheother.Thisawarenessisimportanttohisreceivinginformationaboutspace.Thebabyalsobeginstoseehimselfactwhenherepeatedlyreachesforandgraspsthings.Hestartstodistinguishhimselffromtheouterworld.完成句子__文章練習(xí)23Ifyouwouldlikeanothersignofthisgrowthprocess,tryoneofGesell'smeasuresofmentalgrowth,thebehaviorofababybeforeamirror.AccordingtoGesell,ababywillsmileathisimageataroundtwentyweeksofage.Holdyourbabyuptoamirrorandwatchhimexaminethefacesthere.Hewillprobablyattendmosttohisownimageandperhapssmileatit.完成句子__文章練習(xí)2Ashisimagereturnsthesmile,hemaybecomeactiveandvocalize.Hemayalsolookbackandforthbetweenyourimageandyouasiftheduplicationpuzzleshim.Ababywhoknowshismother'sfacecannotunderstandtwoofthem.Callingsoftlytoyourbaby,ashelooksatyourconfusingdouble,complicatesmattersevenfurther.Histurningbacktotherealyoushowsthatababyfourmonthsoldislikelytohavetheabilityofpreferenceindiscrimination.完成句子__文章練習(xí)24Anearlyattachmenttooneobject—atoyorastuffedanimal—isanotherindexofdiscrimination,aswellasself-development,forthebaby'sinterestsaregoingbeyondhimself.Mostbabiesdonotpreferonetoythisearly,butsomewill.Afterexploringeachtoy,yourbabymaystartreachingandplayingwithonespecialone.完成句子__文章練習(xí)2Inthemonthstocome,thetoyoranythingelsethebabyidentifieswithhimselfbywearingorcarryingmaybecomea“l(fā)ovey”.A“l(fā)ovey”willbesleptwith,chewed,hugged,loved,and“talkedto.”These“l(fā)oveies”givethebabyawayofcopingwiththenecessaryseparationsfromthemother.Afriendlyandfamiliartoybearmayjustmakehimeasieronhimself.Ratherthanfeelingthreatened,amothershouldbeflatteredbyherbaby’sextensionofaffectionelsewhere.Ababywiththehearttofinda“l(fā)ovey”isshowingearlymentalresourcefulnessandflexibility.完成句子__文章練習(xí)25.Thebaby’sabilitytosensethevisualspaceowesto______________.6.Inimitatingthebehaviorofonehandwiththeother,thebabyisableto______________.7.Ababywillsmileashisimageat______________.8.Thebaby’sextensionofaffectionshouldmakethemother______________.完成句子__文章練習(xí)2AaroundtwentyweeksofageB.feelflatteredC.tellonehandfromtheotherD.theperfectionofvisionandtheabilitytoholdhisheadupE.haspreferenceamonghistoysF.explorehistoys DCAB完成句子__文章練習(xí)2NorthAmerica1ThenaturalregionsofNorthAmericaaretypifiedbybroadareasofapparentlysimilarappearanceandmorphology．Theentirewesternmarginofthecontinentisparalleledbyaseriesofmountainchainswithintermountainbasinsandplateaus．Thevastinteriorofthecontinentisdominatedbygentlyrollingplains．Theeasternsideofthecontinenthasbothlowmountainreliefand,alongtheSoutheastcoast，almostflattopography．完成句子__文章練習(xí)32TheagriculturalresourcesofNorthAmericaareimmense，withmuchofthispotentiallocatedintheUnitedStatesandsouthernCanada．AlmostalloftheInteriorPlainsandtheAtlanticandGulfLowlandsregionsaresuitableforagriculture．SignificantareaswithintheWesternUplands—whereverwaterisavailable—arevaluablecroporpasturelandsassmallersectionsofMiddleAmerica．完成句子__文章練習(xí)33Ofthemorethan400millionpeopleinNorthAmerica，morethan60％arelocatedintheUnitedStatesandalmostanother20％liveinMexico．AlmostallofCanada’speoplelivewithin200km(125mi)oftheUS．border．Theremainderofthecontinent’spopulationisdividedbetweentheCaribbeanandCentralAmericancountries，withCuba，intheCaribbean，byfarthemostpopulous．完成句子__文章練習(xí)34TheeducationallevelsofNorthAmericansareexceededconacontinentalscaleonlyinEuropeandinAustralia．IntheUnitedStatesandCanadamorethan50％ofthepeopleolderthan25yearshavecompletedatleast12yearsofschooling．Inaddition，morethan15％havecompletedatleast4yearsofcollege．Virtuallytheentirepopulationofbothcountriesareconsideredliterate．Incontrast，alargeportionoftheMiddleAmericanpopulationdoesnotfinishprimaryschool．完成句子__文章練習(xí)35Levelsofeconomicdevelopmentvarygreatlyoverthecontinent．ThepostindustrialeconomiesofCanadaandtheUnitedStatesemploywellunderone—tenthoftheirlaborforcesinagricultureandone-thirdorlessinindustry,withtherestprimarilyemployedinserviceindustries．Fueledbyoilrevenues，Mexico’seconomydevelopedmorerapidlyinthe1970sthananyothercountry’sonthecontinent．Thefallofoilpricesinthe1980s，however，stalledthisgrowthandplungedMexicodeeplyintodebt．IntheCaribbeanthepaceofeconomicdevelopmentisuneven，andunemploymentratesaregenerallyhigh．完成句子__文章練習(xí)35ThetopographicalfeatureofNorthAmericais

．6ThegreatpotentialagriculturalresourcesofNorthAmericanliesin

．7InU．S．a(chǎn)ndCanada

isconsideredilliterate．8Mexico’srapideconomicdevelopmentinthe1970sisdueto

.完成句子__文章練習(xí)3AoilrevenuesBnoneCtheentirepopulationDtheU.S.andsouthernCanadaEintermountainbasinsandplateausFbroadareasofsimilarappearanceandmorphology FDBA完成句子__文章練習(xí)3完成句子__文章練習(xí)45.Foraslongasthreemonthsofayear,thesun__________ontheice-coveredlandofAlaska.6.Accordingtostatistics,__________ofthetotalareaofAlaskahasbeenusedforfarming.7.AlaskawasoriginallypartofRussia,butwasbought__________.8.GolddidnotbringtoAlaskaasmuchwealth__________.A.asfishdoesB.becauseofitsrichnaturalresourcesC.bytheUnitedStatesinthe19thcenturyD.shinesdayandnightE.onlyaverysmallpercentageF.alimitedamountofthegoldfoundthere通過(guò)語(yǔ)法、詞組和句型的知識(shí)來(lái)做題三.概括大意與完成句子__方法技巧練習(xí)概括大意與完成句子__方法技巧練習(xí)LearnaboutNobleGases(惰性氣體)1Haveyoueverriddenonaballoon?Manytouristspotsofferballoonridesinorderforpeopletoseethebeautyofaplacefromabove.Aballooncontainsanoblegascalledhelium(氦).Formerly,balloonscontainedhydrogenbuthydrogenisveryflammableanddangerouswhenuncontrolled.Therefore,peopleshiftedtohelium,whichissafer.Heliumissafebecauseithasthepropertiesofthenoblegases.概括大意與完成句子__方法技巧練習(xí)1真題2Peopleoncebelievedthatnoblegasescouldn’tchemicallyreactatall.Forthisreason,theywerecalledinertgases(惰性氣體).

TheywerealsolistedunderGroup0intheoldperiodictablebecausescientistsbelievedthatthegaseshavezerovalence(價(jià))electronsintheiroutershell.Thiswaslaterproventobeuntruewhensomenoblegascompoundswerediscovered.概括大意與完成句子__方法技巧練習(xí)1真題3Thegasesareelements,whichsharesimilarproperties.Thesepropertiesincludebeingmonoatomic,colorless,odorless,beingabletoconductelectricity,andhavinglowchemicalreactivity.NoblegasesincludeHelium,Neon,Argon,Krypton,XenonandRadon.TheseareallfoundinGroup18,intherightmostcolumnoftheperiodictable.Ifyoulookattheperiodictable,youwillnoticethattheseelementsaretheonlyones,whichdonothaveacharge.Heliumhasthelowestmolecular(分子的)weightwhileRadonistheheaviest.概括大意與完成句子__方法技巧練習(xí)1真題4Rememberthatchemicalreactionsoccurbecauseatomshavevalenceelectrons,whichareelectronsintheiroutershell.Whentheoutershellis“unfilled”ortherequirednumberofelectronsisnotyetcomplete,theatomismorereactive.Noblegaseshaveafulloutershell,meaningthattheyhavecompleteelectronsintheiroutershell.Thiscompletenumbervaries.Forinstance,theoutershellofHeliumhas2valenceelectronswhiletheoutershellofXenonhas8electrons.Nowadays,thereremainstobeafewnoblegasesbecauseofthelowchemicalreactivityofthesesaidgases.概括大意與完成句子__方法技巧練習(xí)1真題5Becauseoftheirproperties,noblegaseshavemanyimportantapplications.Theyarewidelyusedinmedicineandindustries.Forinstance,liquidHeliumisusedforsuperconductingmagnets(磁體).Thesemagnetsareveryimportantinphysicsandmedicine.Whenadoctorsuspectsthataperson’sbrainhasbeendamaged,hemightrequestforMagneticResonanceImaging(MRI).MRIallowsthedoctorto“see”thebrain,withoutoperatingonthepatient.概括大意與完成句子__方法技巧練習(xí)1真題23.Paragraph2________24.Paragraph3________25.Paragraph4________26.Paragraph5________概括大意與完成句子__方法技巧練習(xí)1真題A.Whatarenoblegases?B.Whatistheperiodictable?C.Whatcausesthelowchemicalreactivityofnoblegases?D.Howwerenoblegasesdiscovered?E.Howwerenoblegasesunderstoodinthepast?F.Whataretheapplicationsofnoblegases?概括大意與完成句子__方法技巧練習(xí)1真題27.Noblegasesarenotverychemically

______.

28.AmongtheelementsofnoblegasesHeliumisthe

_________.

29.Therequirednumberofelectronsinnoblegases’outershellis

__________.

30.MRImaymakeoperatingonthepatient

_______.

概括大意與完成句子__方法技巧練習(xí)1真題A.lightestB.reactiveC.importantD.completeE.flammableF.unnecessary概括大意與完成句子__方法技巧練習(xí)1真題LearnaboutLight1

Ancientcivilizationswereamazedbytheexistenceoflightforthousandsofyears.TheGreekphilosophersbelievedthatlightwasmadeupofcountless,tinyparticlesthatenterthehumaneyeandcreatewhatwecallvision.However,EmpedoclesandaDutchscientistnamedChristianHuygensbelievedthatlightwaslikeawave.Accordingtothem,lightspreadoutandtravelledlikeastraightline.Thistheorywasacceptedduringthe19thcentury.

概括大意與完成句子__方法技巧練習(xí)2真題2

In1905,AlbertEinsteinpublishedaresearchpaperinwhichheexplainedwhatisreferredtoasthephotoelectriceffect.Thistheoryexplainsthatparticlesmakeuplight.TheparticlesEinsteinwasreferringtoareweightlessbundles（束）ofelectromagnetic（電磁）energycalledphotons（光子）.Today,scientistsagreethatlighthasadual（二重）nature—itispartparticleandpartwave.Itisaformofenergythatallowsustoseethingsaroundus.概括大意與完成句子__方法技巧練習(xí)2真題

3

Thingsthatgiveofflightareknownassourcesoflight.Duringtheday,theprimarysourceoflightisthesun.Othersourcesoflightincludestars,flames,flashlights,streetlampsandglowinggasesinglasstube.概括大意與完成句子__方法技巧練習(xí)2真題4

Whenwedrawthewaylighttravelswealwaysusestraightlines.Thisisbecausenormallylightraystravelinastraightline.However,therearesomeinstancesthatcanchangethepathandeventhenatureoflight.Theyarereflection,absorption,interference（干擾）,etc.概括大意與完成句子__方法技巧練習(xí)2真題5

Physicistshaveattemptedtomeasurethespeedoflightsincetheearlytimes.In1849,HippolyteFizeauconductedanexperimentbydirectingabeamoflighttoamirrorlocatedkilometersawayandplacedarotatingcogwheel（旋轉(zhuǎn)齒輪）betweenthebeamandthemirror.Fromtherateofrotationofthewheel,numberofwheel’steethanddistanceofthemirror,hewasabletocalculatethatthespeedoflightis313millionmeterspersecond.Inavacuum（真空）,however,thespeedoflightis299,792,458meterspersec