新编六级听力每日练习-第394期.docx

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新编六级听力每日练习第394期

PassageTwo29.A.Diamond-producingriversaredisappearingbecauseofclimatechange.B.Diamondcouldn'tbeformedwithoutgreatheatandpressureofthevolcano.C.Earthquakesbroughtsomediamondsuptothesurfaceoftheearth.D.Explosionofthevolcanocandamagediamondsaswell.30.A.Undertheriverbed.B.Onthefloorofthesea.C.Inthevolcanoes.D.Atthefootofthemountains.31.A.Theynevercamebackhomewithdesireddiamonds.B.Theylostthehard-earneddiamondsontheirwayback.C.Theyweresentencedtodeathforstealingdiamonds.D.Theyreturnedhomeascontentasmillionaires.32.A.SouthAfrica.B.EasternRussia.C.India.D.Congo.PassageTwoThediamondisconsideredthemostfamousandvaluablejewelintheworld.[29]Diamondsweremadeasaresultofgreatvolcanicheatandpressure.Avolcanoisamountainwithaholeinthetop.Whenavolcanoisveryactiveitsometimesexplodesandcausesgreatdamage.Diamondswerepushedtowardsthesurfaceoftheearth-millionsofyearsago-byanumberofgreatvolcanicexplosions.[30]Itisinthenarrowvolcanicpipesthatdiamondsarefound.Theyarealsofoundamongthesandandstonesofcertainriverbeds,andinafewplacesonthefloorofthesea,fortheywerewasheddownthemountainsidesbytherain.Diamondsareveryrare.Therearenotmanydiamondpipesordiamond-producingriversintheworld.Duringthelastcentury,adventurersfromEuropewenttoBrazil,becausetheyhadheardthattherewerediamondsintheRiverAmazon.[31]Mostoftheseearlydiamondminersdiedofillnessorwerelostforeverinthegreatforests.Butsomereturnedhomerich.[32]TheearliestknowndiamondswerefoundinIndiamanycenturiesago.ThemostrecentandexcitingdiscoverieshavebeenmadeinEasternRussia.Butmostoftheworld'sdiamondsnowcomefromtheCongo,fromTanzania-whichhasthelargestdiamondmineintheworld-andfromSouthAfrica.Questions29to32arebasedonthepassageyouhavejustheard.29.Whatdoesthespeakersayaboutdiamonds?正确答案：B解析：短文说，钻石是火山热和压力的产物。所以B正确。选项都与钻石的情况有关，可猜测题目的内容。答案中的heatandpressure是文中的原词。重要信息往往不止出现一次，后文中的greatvolcanicexplosions再次强调成因。30.Wherecandiamondsbefound?正确答案：C解析：短文说，钻石是在狭窄的火山筒被发现的。所以C正确。选项为地点，可预测考查的是钻石的出处。注意听原文中