新编英美概况许鲁之(第四版)unit1-12课后习题选择填空

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1、WORD文档下载可编辑Chapter1GeographicalFeaturesandNaturalResources1.Inarea,theUnitedStatesisthe4thlargestcountryintheworld.2.TheMidwestintheUSreferstotheregionaroundtheGreatLakesandtheupperMississippiValley.3.TheBackboneofNorthAmericareferstotheRockyMountains4.DeathValleyisonthewesternedg

2、eoftheGreatBasin.5.TheGreatPlainsmighthaveaduststorminsummer.6.ThewesternpartofWashingtonStatehasthehighestrainfallintheUS.7.TheUSprimarysuppliersofforeignoilarethefollowingcountriesexceptJapan8.TheUSlargestopen-pitcopper-miningcenterisinUtah.1.TheUnitedStatesisborderedonthenorthb

3、yCanada,onthesouthbyMexicoandtheGuffofMexico,ontheeastbytheAtlanticOcean,andonthewestbythePacificOcean.2.ThelargeterritoryofthecontinentalUSisdividedintothreebasicareas:A.theAtlanticseacoastwesttotheAppalachiansB.theMississippiRiverBasinC.theRockieswesttothePacific3.TheMiddleAtlan

4、ticStatesarethemostdenselypopulatedregionintheUS,wherethelandisflatandfertile.4.TheCentralValleyofCaliforniaisahighlyproductivearea,whichproducedenormousamountsoffruitsandvegetables.5.MostproductionofoilandnaturalgasintheUScomesfromoffshoreareasofLouisianaandTexas,andfromonshorear

5、easofTexas,OklahomaandCalifornia.HerbigconsumptionofenergynowhasmadeAmericainsufficientinoilsupply.TheUSrelianceofforeignoilhasremindedconsistentlyinthe40%ranges.6.TheUnitedStateshaslittletroublecausedbytheshortageoffreshwater.FarmlandsintheUSmakingupabout12%ofthearablelandsinthew

6、orld,andtheyareamongtherichestandmostproductive.Chapter2AmericanPopulation1.Theover3millionofearlyAmericansin1790weremostlyofBritishancestry.2.About700,000immigrantswerelegallyreceivedbytheUSeachyearduringthe1980s.3.TheofficialracialsegregationcontinuedtobethelawoftheUSuntil1954.4

7、.AmericanIndiansnowmainlyliveintheSouth.5.ThemajorityofAmericanHispanicsarefromthefollowingcountriesexceptSpain.6.TheWestnowleadsinpercentageincreaseinpopulation.7.Accordingtothe1994UScensus,thesecondmostpopulousstateintheUSisTaxes.8.Thetrendinmigrationfromcitiestosuburbsnowprevai

8、ledinallregionsexcepttheSouth.1.T