新编英美概况许鲁之[第四版]unit1_12课后习题选择填空

《新编英美概况许鲁之[第四版]unit1_12课后习题选择填空》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、.WORD.格式.Chapter1GeographicalFeaturesandNaturalResources1.Inarea,theUnitedStatesisthe4thlargestcountryintheworld.2.TheMidwestintheUSreferstotheregionaroundtheGreatLakesandtheupperMississippiValley.3.TheBackboneofNorthAmericareferstotheRockyMountains4.DeathValleyisonthewesternedgeoftheGrea

2、tBasin.5.TheGreatPlainsmighthaveaduststorminsummer.6.ThewesternpartofWashingtonStatehasthehighestrainfallintheUS.7.TheUSprimarysuppliersofforeignoilarethefollowingcountriesexceptJapan8.TheUSlargestopen-pitcopper-miningcenterisinUtah.1.TheUnitedStatesisborderedonthenorthbyCanada,onthesouth

3、byMexicoandtheGuffofMexico,ontheeastbytheAtlanticOcean,andonthewestbythePacificOcean.2.ThelargeterritoryofthecontinentalUSisdividedintothreebasicareas:A.theAtlanticseacoastwesttotheAppalachiansB.theMississippiRiverBasinC.theRockieswesttothePacific3.TheMiddleAtlanticStatesarethemostdensely

4、populatedregionintheUS,wherethelandisflatandfertile.4.TheCentralValleyofCaliforniaisahighlyproductivearea,whichproducedenormousamountsoffruitsandvegetables.5.MostproductionofoilandnaturalgasintheUScomesfromoffshoreareasofLouisianaandTexas,andfromonshoreareasofTexas,OklahomaandCalifornia.H

5、erbigconsumptionofenergynowhasmadeAmericainsufficientinoilsupply.TheUSrelianceofforeignoilhasremindedconsistentlyinthe40%ranges.6.TheUnitedStateshaslittletroublecausedbytheshortageoffreshwater.FarmlandsintheUSmakingupabout12%ofthearablelandsintheworld,andtheyareamongtherichestandmostprodu

6、ctive.Chapter2AmericanPopulation1.Theover3millionofearlyAmericansin1790weremostlyofBritishancestry.2.About700,000immigrantswerelegallyreceivedbytheUSeachyearduringthe1980s.3.TheofficialracialsegregationcontinuedtobethelawoftheUSuntil1954.4.AmericanIndiansnowmainlyliveintheSouth.5.Themajor

7、ityofAmericanHispanicsarefromthefollowingcountriesexceptSpain.6.TheWestnowleadsinpercentageincreaseinpopulation.7.Accordingtothe1994UScensus,thesecondmostpopulousstateintheUSisTaxes.8.ThetrendinmigrationfromcitiestosuburbsnowprevailedinallregionsexcepttheSouth.1.The