材料全屏

材料全屏

                                                                              BritishColumbia

【*】BritishColumbiaisthethirdlargestCanadianprovince,bothinareaandpopulation.Itisnearly1.5timesaslargeasTexas,andextends800miles(1,280km)northfromtheUnitedStatesborder.ItincludesCanada‘sentirewestcoastandtheislandsjustoffthecoast.
【*】MostofBritishColumbiaismountainous,withlongruggedrangesrunningnorthandsouth.Eventhecoastalislandsaretheremainsofamountainrangethatexistedthousandsofyearsago.DuringthelastIceAge,thisrangewasscouredbyglaciersuntilmostofitwasbeneaththesea.Itspeaksnowshowasislandsscatteredalongthecoast.
【*】Thesouthwesterncoastalregionhasahumidmildmarineclimate.SeawindsthatblowinlandfromthewestarewarmedbyacurrentofwarmwaterthatflowsthroughthePacificOcean.Asaresult,wintertemperaturesaverageabovefreezingandsummersaremild.Thesewarmwesternwindsalsomoisturefromtheocean.
【*】Inlandfromthecoast,thewindsfromthePacificmeetthemountainbarriersofthecoastalrangesandtheRockyMountains.Astheyrisetocrossthemountains,thewindsarecooled,andtheirmoisturebeginstofallasrain.Onsomeofthewesternslopesalmost200inches(500cm)ofrainfalleachyear.
【*】MorethanhalfofBritishColumbiaisheavilyforested.Onmountainslopesthatr eceiveplentifulrainfall,hugeDouglasfirsriseintoweringcolumns.Theseforestgiantsoftengrowtobeasmuchas300feet(90m)tall,withdiametersupto10feet(3m).Morelumberisproducedfromthesetr eesthanfromanyotherkindoftr eeinNorthAmerica.Hemlock,redcedar,andbalsamfirareamongtheothertr eesfoundinBritishColumbia.
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【单选】

WithwhichaspectofBritishColumbiaisthepassageprimarilyconcerned?（）

A

 Itsclimate

B

 Itsculture

C

 Itsgeography

D

Itshistory

答案及解析：主旨大意题。第一段讲了BritishColumbia是加拿大第三大省,第二段讲该地区是山区,第三、四段讲气候,最后一段讲植被。