新编英美概况许鲁之(第四版)unit1-12课后习地的题目选择填空

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1、实用标准文档Chapter1GeographicalFeaturesandNaturalResources1.Inarea,theUnitedStatesisthe4thlargestcountryintheworld.2.TheMidwestintheUSreferstotheregionaroundtheGreatLakesandtheupperMississippiValley.3.TheBackboneofNorthAmericareferstotheRockyMountains4.DeathValleyisonthewesternedgeofthe

2、GreatBasin.5.TheGreatPlainsmighthaveaduststorminsummer.6.ThewesternpartofWashingtonStatehasthehighestrainfallintheUS.7.TheUSprimarysuppliersofforeignoilarethefollowingcountriesexceptJapan8.TheUSlargestopen-pitcopper-miningcenterisinUtah.1.TheUnitedStatesisborderedonthenorthbyCanada

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

4、sarethemostdenselypopulatedregionintheUS,wherethelandisflatandfertile.4.TheCentralValleyofCaliforniaisahighlyproductivearea,whichproducedenormousamountsoffruitsandvegetables.5.MostproductionofoilandnaturalgasintheUScomesfromoffshoreareasofLouisianaandTexas,andfromonshoreareasofTexa

5、s,OklahomaandCalifornia.HerbigconsumptionofenergynowhasmadeAmericainsufficientinoilsupply.TheUSrelianceofforeignoilhasremindedconsistentlyinthe40%ranges.6.TheUnitedStateshaslittletroublecausedbytheshortageoffreshwater.FarmlandsintheUSmakingupabout12%ofthearablelandsintheworld,andth

6、eyareamongtherichestandmostproductive.Chapter2AmericanPopulation1.Theover3millionofearlyAmericansin1790weremostlyofBritishancestry.2.About700,000immigrantswerelegallyreceivedbytheUSeachyearduringthe1980s.3.TheofficialracialsegregationcontinuedtobethelawoftheUSuntil1954.4.AmericanIn

7、diansnowmainlyliveintheSouth.5.ThemajorityofAmericanHispanicsarefromthefollowingcountriesexceptSpain.6.TheWestnowleadsinpercentageincreaseinpopulation.7.Accordingtothe1994UScensus,thesecondmostpopulousstateintheUSisTaxes.8.Thetrendinmigrationfromcitiestosuburbsnowprevailedinallregi

8、onsexcepttheSouth.1.TheUni