2010年6月大学英语四级考试真题SectionBDirections:),B),C)andD).,butthey''regoing,howfastyou'',orosIslandsintheIndianOceanJune30,2009,(潜水艇)detectedthedevice'shomingsignalfivedayslater,,AustralianscientistDavidWarrendevelopedaflight-,,however,pletelyredesignedandmovedtotherearoftheplane—thearealeastsubjecttoimpact—fromitsoriginalpositioninthelandingwells(起落架舱).Thatsameyear,theFederalAviationAuthorityrequiredthattheboxes,whichwereneveractuallyblack,:avoicerecorder,whichtrackspilots'conversations,andaflight-datarecorder,whichmonitorsfuellevels,enginenoisesandotheroperatingfunctionsthathelpinvestigatorsreconstructtheaircraft'(隔绝的)caseandsurroundedbyquarter-inch-thickpanelsofstainlesssteel,theboxescanwithstandmassiveforceandtemperaturesupto2000°,they',whichcrashednearBrazilonJune1,2009,areinwaternearlythatdeep,butstatisticssaythey'-seacrashesoverthepast30years,onlyoneplane'?A)))
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