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? ?阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。 {{B}}? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?...
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{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ???{{B}}AvalancheandItsSafety{{/B}}??Anavalanche isasuddenandrapidflowofsnowoftenmixedwithairandwaterdowna mountainside.Avalanchesare{{U}}?51?{{/U}}thebiggestdangersinthe mountainsforbothlifeandproperty.??Allavalanchesarecaused byanover-burdenofmaterialtypicallysnowpackthatistoomassiveand unstablefortheslope{{U}}?52?{{/U}}supportsit.Determiningthe criticalloadtheamountofover-burdenwhichis{{U}}?53?{{/U}}to causeanavalanche{{U}}?54?{{/U}}acomplextaskinvolvingthe evaluationofanumberoffactors.??Terrainslopesflatterthan 25degreesorsteeperthan60degreestypicallyhavealow{{U}}?55 ?{{/U}}ofavalanche.Snowdoesnot{{U}}?56?{{/U}}significantlyon steepslopes;alsosnowdoesnot{{U}}?57?{{/U}}easilyonflatslopes. Human-triggeredavalancheshavethegreatestincidencewhenthesnow’sangleof restis{{U}}?58?{{/U}}35and45degrees;thecriticalangletheangle atwhichthehumanincidenceofavalanchesisgreatestis38degrees.Therule ofthumbis:Aslopethatis{{U}}?59?{{/U}}enoughtoholdsnowbut steepenoughtoskihasthepotentialtogenerateanavalancheregardlessof theangle.Additionallyavalancheriskincreaseswith{{U}}?60?{{/U}}; thatisthemoreaslopeisdisturbedbyskiersthemorelikelyitisthatan avalanchewilloccur.??Ductothecomplexityofthesubject wintertravellinginthebackcountryisnever100%safe.Goodavalanchesafety isacontinuous{{U}}?61?{{/U}}includingrouteselectionand examinationofthesnowpackweather{{U}}?62?{{/U}}andhuman factors.Severalwell-knowngoodhabitscanalso{{U}}?63?{{/U}}the risk.Iflocalauthoritiesissueavalancheriskreportstheyshouldbe consideredandallwarningsshouldbepaid{{U}}?64?{{/U}}to.Never followinthetracksofotherswithoutyourownevaluations;snowconditionsare almostcertaintohavechangedsincetheyweremade.Observetheterrainand noteobviousavalanchepathswhereplantsare{{U}}?65?{{/U}}or damaged.Avoidtravelingbelowotherswhomighttriggeran avalanche.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ???{{B}}AvalancheandItsSafety{{/B}}??Anavalanche isasuddenandrapidflowofsnowoftenmixedwithairandwaterdowna mountainside.Avalanchesare{{U}}?51?{{/U}}thebiggestdangersinthe mountainsforbothlifeandproperty.??Allavalanchesarecaused byanover-burdenofmaterialtypicallysnowpackthatistoomassiveand unstablefortheslope{{U}}?52?{{/U}}supportsit.Determiningthe criticalloadtheamountofover-burdenwhichis{{U}}?53?{{/U}}to causeanavalanche{{U}}?54?{{/U}}acomplextaskinvolvingthe evaluationofanumberoffactors.??Terrainslopesflatterthan 25degreesorsteeperthan60degreestypicallyhavealow{{U}}?55 ?{{/U}}ofavalanche.Snowdoesnot{{U}}?56?{{/U}}significantlyon steepslopes;alsosnowdoesnot{{U}}?57?{{/U}}easilyonflatslopes. Human-triggeredavalancheshavethegreatestincidencewhenthesnow’sangleof restis{{U}}?58?{{/U}}35and45degrees;thecriticalangletheangle atwhichthehumanincidenceofavalanchesisgreatestis38degrees.Therule ofthumbis:Aslopethatis{{U}}?59?{{/U}}enoughtoholdsnowbut steepenoughtoskihasthepotentialtogenerateanavalancheregardlessof theangle.Additionallyavalancheriskincreaseswith{{U}}?60?{{/U}}; thatisthemoreaslopeisdisturbedbyskiersthemorelikelyitisthatan avalanchewilloccur.??Ductothecomplexityofthesubject wintertravellinginthebackcountryisnever100%safe.Goodavalanchesafety isacontinuous{{U}}?61?{{/U}}includingrouteselectionand examinationofthesnowpackweather{{U}}?62?{{/U}}andhuman factors.Severalwell-knowngoodhabitscanalso{{U}}?63?{{/U}}the risk.Iflocalauthoritiesissueavalancheriskreportstheyshouldbe consideredandallwarningsshouldbepaid{{U}}?64?{{/U}}to.Never followinthetracksofotherswithoutyourownevaluations;snowconditionsare almostcertaintohavechangedsincetheyweremade.Observetheterrainand noteobviousavalanchepathswhereplantsare{{U}}?65?{{/U}}or damaged.Avoidtravelingbelowotherswhomighttriggeran avalanche.
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{{*HTML*}}{{B}}第三篇{{/B}} ??????? ????????{{B}}Hair Detectives{{/B}}??Scientistshavefoundawaytousehairtofigure outwhereapersonisfromandwherethatpersonhasbeen.Thefindingcould helpsolvecrimesamongotherusefulapplications.??Wateris centraltothenewtechnique.Ourbodiesbreakwaterdownintoitsparts: hydrogenandoxygen.Atomsofthesetwoelementsendupinourtissuesand hair.??Butnotallwateristhesame.Hydrogenandoxygenatoms canvaryinhowmuchtheyweigh.Differentformsofasingleelementarecalled isotopes.Anddependingonwhereyoulivetapwatercontainsuniqueproportions oftheheavierandlighterisotopesofhydrogenandoxygen.? ?Mighthairrecordthesewateryquirks?That’swhatJamesR.Ehleringeran environmentalscientistattheUniversityofUtahinSaltLakeCity wondered.??Tofindoutheandhiscolleaguescollectedhairfrom barbersandhairstylistsin65citiesin18statesacrosstheUnitedStates. Theresearchersassumedthatthehairtheycollectedcamefrompeoplewholived inthearea.??Eventhoughpeopledrinkalotofbottledwater thesedaysthescientistsfoundthathairoverwhelminglyreflectedthe concentrationsofhydrogenandoxygenisotopesinlocaltapwater.That’s probablybecausepeopleusuallycooktheirfoodinthelocalwater.What’smore mostoftheotherliquidspeopledrinkincludingmilkandsoftdrinkscontain largeamountsofwaterthatalsocomefromsourceswithintheir region.??Scientistsalreadyknewhowthecompositionofwater variesthroughoutthecountry.Ehleringerandcolleaguescombinedthat informationwiththeirresultstopredictthecompositionofhairinpeoplefrom differentregions.OnehairsampleusedinEhleringer’sstudycamefromaman whohadrecentlymovedfromBeijingChinatoSaltLakeCityAshishairgrew itreflectedhischangeinlocation.??Thenewtechniquecan’t pointtoexactlywhereapersonisfrombecausesimilartypesofwaterappear indifferentregionsthatspanabroadarea.Butauthoritiescannowusethe informationtoanalyzehairsamplesfromcriminalsorcrimevictimsandnarrow theirsearchforclues.Whichofthefollowingisclosestinmeaningtotherifle?
{{*HTML*}}{{B}}第三篇{{/B}} ??????? ????????{{B}}Hair Detectives{{/B}}??Scientistshavefoundawaytousehairtofigure outwhereapersonisfromandwherethatpersonhasbeen.Thefindingcould helpsolvecrimesamongotherusefulapplications.??Wateris centraltothenewtechnique.Ourbodiesbreakwaterdownintoitsparts: hydrogenandoxygen.Atomsofthesetwoelementsendupinourtissuesand hair.??Butnotallwateristhesame.Hydrogenandoxygenatoms canvaryinhowmuchtheyweigh.Differentformsofasingleelementarecalled isotopes.Anddependingonwhereyoulivetapwatercontainsuniqueproportions oftheheavierandlighterisotopesofhydrogenandoxygen.? ?Mighthairrecordthesewateryquirks?That’swhatJamesR.Ehleringeran environmentalscientistattheUniversityofUtahinSaltLakeCity wondered.??Tofindoutheandhiscolleaguescollectedhairfrom barbersandhairstylistsin65citiesin18statesacrosstheUnitedStates. Theresearchersassumedthatthehairtheycollectedcamefrompeoplewholived inthearea.??Eventhoughpeopledrinkalotofbottledwater thesedaysthescientistsfoundthathairoverwhelminglyreflectedthe concentrationsofhydrogenandoxygenisotopesinlocaltapwater.That’s probablybecausepeopleusuallycooktheirfoodinthelocalwater.What’smore mostoftheotherliquidspeopledrinkincludingmilkandsoftdrinkscontain largeamountsofwaterthatalsocomefromsourceswithintheir region.??Scientistsalreadyknewhowthecompositionofwater variesthroughoutthecountry.Ehleringerandcolleaguescombinedthat informationwiththeirresultstopredictthecompositionofhairinpeoplefrom differentregions.OnehairsampleusedinEhleringer’sstudycamefromaman whohadrecentlymovedfromBeijingChinatoSaltLakeCityAshishairgrew itreflectedhischangeinlocation.??Thenewtechniquecan’t pointtoexactlywhereapersonisfrombecausesimilartypesofwaterappear indifferentregionsthatspanabroadarea.Butauthoritiescannowusethe informationtoanalyzehairsamplesfromcriminalsorcrimevictimsandnarrow theirsearchforclues.Whichofthefollowingstatementsismeantbythewriter?
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TwoscientistslosttheirlivesduringtheseconderuptionofMountSaintHelens.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ???{{B}}AvalancheandItsSafety{{/B}}??Anavalanche isasuddenandrapidflowofsnowoftenmixedwithairandwaterdowna mountainside.Avalanchesare{{U}}?51?{{/U}}thebiggestdangersinthe mountainsforbothlifeandproperty.??Allavalanchesarecaused byanover-burdenofmaterialtypicallysnowpackthatistoomassiveand unstablefortheslope{{U}}?52?{{/U}}supportsit.Determiningthe criticalloadtheamountofover-burdenwhichis{{U}}?53?{{/U}}to causeanavalanche{{U}}?54?{{/U}}acomplextaskinvolvingthe evaluationofanumberoffactors.??Terrainslopesflatterthan 25degreesorsteeperthan60degreestypicallyhavealow{{U}}?55 ?{{/U}}ofavalanche.Snowdoesnot{{U}}?56?{{/U}}significantlyon steepslopes;alsosnowdoesnot{{U}}?57?{{/U}}easilyonflatslopes. Human-triggeredavalancheshavethegreatestincidencewhenthesnow’sangleof restis{{U}}?58?{{/U}}35and45degrees;thecriticalangletheangle atwhichthehumanincidenceofavalanchesisgreatestis38degrees.Therule ofthumbis:Aslopethatis{{U}}?59?{{/U}}enoughtoholdsnowbut steepenoughtoskihasthepotentialtogenerateanavalancheregardlessof theangle.Additionallyavalancheriskincreaseswith{{U}}?60?{{/U}}; thatisthemoreaslopeisdisturbedbyskiersthemorelikelyitisthatan avalanchewilloccur.??Ductothecomplexityofthesubject wintertravellinginthebackcountryisnever100%safe.Goodavalanchesafety isacontinuous{{U}}?61?{{/U}}includingrouteselectionand examinationofthesnowpackweather{{U}}?62?{{/U}}andhuman factors.Severalwell-knowngoodhabitscanalso{{U}}?63?{{/U}}the risk.Iflocalauthoritiesissueavalancheriskreportstheyshouldbe consideredandallwarningsshouldbepaid{{U}}?64?{{/U}}to.Never followinthetracksofotherswithoutyourownevaluations;snowconditionsare almostcertaintohavechangedsincetheyweremade.Observetheterrainand noteobviousavalanchepathswhereplantsare{{U}}?65?{{/U}}or damaged.Avoidtravelingbelowotherswhomighttriggeran avalanche.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ???{{B}}AvalancheandItsSafety{{/B}}??Anavalanche isasuddenandrapidflowofsnowoftenmixedwithairandwaterdowna mountainside.Avalanchesare{{U}}?51?{{/U}}thebiggestdangersinthe mountainsforbothlifeandproperty.??Allavalanchesarecaused byanover-burdenofmaterialtypicallysnowpackthatistoomassiveand unstablefortheslope{{U}}?52?{{/U}}supportsit.Determiningthe criticalloadtheamountofover-burdenwhichis{{U}}?53?{{/U}}to causeanavalanche{{U}}?54?{{/U}}acomplextaskinvolvingthe evaluationofanumberoffactors.??Terrainslopesflatterthan 25degreesorsteeperthan60degreestypicallyhavealow{{U}}?55 ?{{/U}}ofavalanche.Snowdoesnot{{U}}?56?{{/U}}significantlyon steepslopes;alsosnowdoesnot{{U}}?57?{{/U}}easilyonflatslopes. Human-triggeredavalancheshavethegreatestincidencewhenthesnow’sangleof restis{{U}}?58?{{/U}}35and45degrees;thecriticalangletheangle atwhichthehumanincidenceofavalanchesisgreatestis38degrees.Therule ofthumbis:Aslopethatis{{U}}?59?{{/U}}enoughtoholdsnowbut steepenoughtoskihasthepotentialtogenerateanavalancheregardlessof theangle.Additionallyavalancheriskincreaseswith{{U}}?60?{{/U}}; thatisthemoreaslopeisdisturbedbyskiersthemorelikelyitisthatan avalanchewilloccur.??Ductothecomplexityofthesubject wintertravellinginthebackcountryisnever100%safe.Goodavalanchesafety isacontinuous{{U}}?61?{{/U}}includingrouteselectionand examinationofthesnowpackweather{{U}}?62?{{/U}}andhuman factors.Severalwell-knowngoodhabitscanalso{{U}}?63?{{/U}}the risk.Iflocalauthoritiesissueavalancheriskreportstheyshouldbe consideredandallwarningsshouldbepaid{{U}}?64?{{/U}}to.Never followinthetracksofotherswithoutyourownevaluations;snowconditionsare almostcertaintohavechangedsincetheyweremade.Observetheterrainand noteobviousavalanchepathswhereplantsare{{U}}?65?{{/U}}or damaged.Avoidtravelingbelowotherswhomighttriggeran avalanche.
Pilotsflyingattheheightofmorethan2100meterssawathickblackcolumnofashandsteamshootingupintotheairfromthecrater.
{{*HTML*}}阅读下面的短文文章中有5处空白文章后面有6组文字请根据文章的内容选择5组文字将其分别放回文章原有位置以恢复文章原貌 ?????????? ??????{{B}}TheWorld’sLongest Bridge{{/B}}??Rumor’hasitthatalegendarysix-headedmonster lurksinthedeepwatersoftheTyrrhenianSeabetweenItalyandtheislandof Sicily.{{U}}?46?{{/U}}Whencompletedin2010theworld’slongest bridgewillweighnearly300000tons--equivalenttotheicebergthatsankthe Titanic--andstretch5kilometerslong.That’snearly50percentlongerthan anyotherbridgeeverbuiltsaysstructuralengineerShaneRixon.? ?{{U}}?47?{{/U}}They’resuspensionbridgesmassivestructures builttospanvastwaterchannelsorgorges.Asuspensionbridgeneedsjusttwo towerstoshoulderthestructure’smammothweightthankstoheftysupporting cablesslungbetweenthetowersandanchoredfirmlyindeeppoolsofcementat eachendofthebridge.TheMessinaStraitBridgewillhavetwo54100-ton towerswhichwillsupportmostofthebridge’sload.Thebeefycablesofthe bridgeeach1.2meterindiameterwillholdupthelongestandwidestbridge deckeverbuilt.??WhenconstructionbeginsontheMessinaStrait Bridgein2005thefirstjobwillbetoerecttwo370meter-tallsteel towers.{{U}}?48?{{/U}}Gettingthesecablesupwillbesomething.It’s notjusttheirlength--totally5.3kilometers--buttheirweight.{{U}} ?49?{{/U}}.??Afterloweringverticalsuspender cablesfromthemaincablesbuilderswillerecta60-meter-wide54630-ton steelroadwayordeck--wideenoughtoaccommodate12lanesoftraffic.The deck’sweightwillpulldownonthecableswithaforceof70500tons.In returnthecablesyankupagainsttheirfirmlyrootedanchorswithaforceof 159000tons--equivalenttotheweightofabout100000cars.Thoseanchors areessential.{{U}}?50?{{/U}}.A?Someenvironmentalistsare againsttheprojectonbiologicalgrounds.B?Whatdotheworld’s longestbridgeshaveincommon?C?Iftrueonedayyoumightspythe beastwhilezipping呼啸而过acrosstheMessinaStraitBridge.D?They’re whatwillkeepthebridgefromgoinganywhere.E?Thesecondjobwillbe topulltwosetsofsteelcablesacrossthestraiteachsetbeingabundleof 44352individualsteelwires.F?Theywilltipupthescalesat166500 tons--morethanhalfthebridge’stotalmass.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ???{{B}}AvalancheandItsSafety{{/B}}??Anavalanche isasuddenandrapidflowofsnowoftenmixedwithairandwaterdowna mountainside.Avalanchesare{{U}}?51?{{/U}}thebiggestdangersinthe mountainsforbothlifeandproperty.??Allavalanchesarecaused byanover-burdenofmaterialtypicallysnowpackthatistoomassiveand unstablefortheslope{{U}}?52?{{/U}}supportsit.Determiningthe criticalloadtheamountofover-burdenwhichis{{U}}?53?{{/U}}to causeanavalanche{{U}}?54?{{/U}}acomplextaskinvolvingthe evaluationofanumberoffactors.??Terrainslopesflatterthan 25degreesorsteeperthan60degreestypicallyhavealow{{U}}?55 ?{{/U}}ofavalanche.Snowdoesnot{{U}}?56?{{/U}}significantlyon steepslopes;alsosnowdoesnot{{U}}?57?{{/U}}easilyonflatslopes. Human-triggeredavalancheshavethegreatestincidencewhenthesnow’sangleof restis{{U}}?58?{{/U}}35and45degrees;thecriticalangletheangle atwhichthehumanincidenceofavalanchesisgreatestis38degrees.Therule ofthumbis:Aslopethatis{{U}}?59?{{/U}}enoughtoholdsnowbut steepenoughtoskihasthepotentialtogenerateanavalancheregardlessof theangle.Additionallyavalancheriskincreaseswith{{U}}?60?{{/U}}; thatisthemoreaslopeisdisturbedbyskiersthemorelikelyitisthatan avalanchewilloccur.??Ductothecomplexityofthesubject wintertravellinginthebackcountryisnever100%safe.Goodavalanchesafety isacontinuous{{U}}?61?{{/U}}includingrouteselectionand examinationofthesnowpackweather{{U}}?62?{{/U}}andhuman factors.Severalwell-knowngoodhabitscanalso{{U}}?63?{{/U}}the risk.Iflocalauthoritiesissueavalancheriskreportstheyshouldbe consideredandallwarningsshouldbepaid{{U}}?64?{{/U}}to.Never followinthetracksofotherswithoutyourownevaluations;snowconditionsare almostcertaintohavechangedsincetheyweremade.Observetheterrainand noteobviousavalanchepathswhereplantsare{{U}}?65?{{/U}}or damaged.Avoidtravelingbelowotherswhomighttriggeran avalanche.
TheeruptionofMountSaintHelensattractedalargenumberofforeigntourists.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ???{{B}}AvalancheandItsSafety{{/B}}??Anavalanche isasuddenandrapidflowofsnowoftenmixedwithairandwaterdowna mountainside.Avalanchesare{{U}}?51?{{/U}}thebiggestdangersinthe mountainsforbothlifeandproperty.??Allavalanchesarecaused byanover-burdenofmaterialtypicallysnowpackthatistoomassiveand unstablefortheslope{{U}}?52?{{/U}}supportsit.Determiningthe criticalloadtheamountofover-burdenwhichis{{U}}?53?{{/U}}to causeanavalanche{{U}}?54?{{/U}}acomplextaskinvolvingthe evaluationofanumberoffactors.??Terrainslopesflatterthan 25degreesorsteeperthan60degreestypicallyhavealow{{U}}?55 ?{{/U}}ofavalanche.Snowdoesnot{{U}}?56?{{/U}}significantlyon steepslopes;alsosnowdoesnot{{U}}?57?{{/U}}easilyonflatslopes. Human-triggeredavalancheshavethegreatestincidencewhenthesnow’sangleof restis{{U}}?58?{{/U}}35and45degrees;thecriticalangletheangle atwhichthehumanincidenceofavalanchesisgreatestis38degrees.Therule ofthumbis:Aslopethatis{{U}}?59?{{/U}}enoughtoholdsnowbut steepenoughtoskihasthepotentialtogenerateanavalancheregardlessof theangle.Additionallyavalancheriskincreaseswith{{U}}?60?{{/U}}; thatisthemoreaslopeisdisturbedbyskiersthemorelikelyitisthatan avalanchewilloccur.??Ductothecomplexityofthesubject wintertravellinginthebackcountryisnever100%safe.Goodavalanchesafety isacontinuous{{U}}?61?{{/U}}includingrouteselectionand examinationofthesnowpackweather{{U}}?62?{{/U}}andhuman factors.Severalwell-knowngoodhabitscanalso{{U}}?63?{{/U}}the risk.Iflocalauthoritiesissueavalancheriskreportstheyshouldbe consideredandallwarningsshouldbepaid{{U}}?64?{{/U}}to.Never followinthetracksofotherswithoutyourownevaluations;snowconditionsare almostcertaintohavechangedsincetheyweremade.Observetheterrainand noteobviousavalanchepathswhereplantsare{{U}}?65?{{/U}}or damaged.Avoidtravelingbelowotherswhomighttriggeran avalanche.
Aliceis{{U}}afascinating{{/U}}girl.
{{*HTML*}}阅读下面的短文文章中有5处空白文章后面有6组文字请根据文章的内容选择5组文字将其分别放回文章原有位置以恢复文章原貌 ?????????? ??????{{B}}TheWorld’sLongest Bridge{{/B}}??Rumor’hasitthatalegendarysix-headedmonster lurksinthedeepwatersoftheTyrrhenianSeabetweenItalyandtheislandof Sicily.{{U}}?46?{{/U}}Whencompletedin2010theworld’slongest bridgewillweighnearly300000tons--equivalenttotheicebergthatsankthe Titanic--andstretch5kilometerslong.That’snearly50percentlongerthan anyotherbridgeeverbuiltsaysstructuralengineerShaneRixon.? ?{{U}}?47?{{/U}}They’resuspensionbridgesmassivestructures builttospanvastwaterchannelsorgorges.Asuspensionbridgeneedsjusttwo towerstoshoulderthestructure’smammothweightthankstoheftysupporting cablesslungbetweenthetowersandanchoredfirmlyindeeppoolsofcementat eachendofthebridge.TheMessinaStraitBridgewillhavetwo54100-ton towerswhichwillsupportmostofthebridge’sload.Thebeefycablesofthe bridgeeach1.2meterindiameterwillholdupthelongestandwidestbridge deckeverbuilt.??WhenconstructionbeginsontheMessinaStrait Bridgein2005thefirstjobwillbetoerecttwo370meter-tallsteel towers.{{U}}?48?{{/U}}Gettingthesecablesupwillbesomething.It’s notjusttheirlength--totally5.3kilometers--buttheirweight.{{U}} ?49?{{/U}}.??Afterloweringverticalsuspender cablesfromthemaincablesbuilderswillerecta60-meter-wide54630-ton steelroadwayordeck--wideenoughtoaccommodate12lanesoftraffic.The deck’sweightwillpulldownonthecableswithaforceof70500tons.In returnthecablesyankupagainsttheirfirmlyrootedanchorswithaforceof 159000tons--equivalenttotheweightofabout100000cars.Thoseanchors areessential.{{U}}?50?{{/U}}.A?Someenvironmentalistsare againsttheprojectonbiologicalgrounds.B?Whatdotheworld’s longestbridgeshaveincommon?C?Iftrueonedayyoumightspythe beastwhilezipping呼啸而过acrosstheMessinaStraitBridge.D?They’re whatwillkeepthebridgefromgoinganywhere.E?Thesecondjobwillbe topulltwosetsofsteelcablesacrossthestraiteachsetbeingabundleof 44352individualsteelwires.F?Theywilltipupthescalesat166500 tons--morethanhalfthebridge’stotalmass.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ???{{B}}AvalancheandItsSafety{{/B}}??Anavalanche isasuddenandrapidflowofsnowoftenmixedwithairandwaterdowna mountainside.Avalanchesare{{U}}?51?{{/U}}thebiggestdangersinthe mountainsforbothlifeandproperty.??Allavalanchesarecaused byanover-burdenofmaterialtypicallysnowpackthatistoomassiveand unstablefortheslope{{U}}?52?{{/U}}supportsit.Determiningthe criticalloadtheamountofover-burdenwhichis{{U}}?53?{{/U}}to causeanavalanche{{U}}?54?{{/U}}acomplextaskinvolvingthe evaluationofanumberoffactors.??Terrainslopesflatterthan 25degreesorsteeperthan60degreestypicallyhavealow{{U}}?55 ?{{/U}}ofavalanche.Snowdoesnot{{U}}?56?{{/U}}significantlyon steepslopes;alsosnowdoesnot{{U}}?57?{{/U}}easilyonflatslopes. Human-triggeredavalancheshavethegreatestincidencewhenthesnow’sangleof restis{{U}}?58?{{/U}}35and45degrees;thecriticalangletheangle atwhichthehumanincidenceofavalanchesisgreatestis38degrees.Therule ofthumbis:Aslopethatis{{U}}?59?{{/U}}enoughtoholdsnowbut steepenoughtoskihasthepotentialtogenerateanavalancheregardlessof theangle.Additionallyavalancheriskincreaseswith{{U}}?60?{{/U}}; thatisthemoreaslopeisdisturbedbyskiersthemorelikelyitisthatan avalanchewilloccur.??Ductothecomplexityofthesubject wintertravellinginthebackcountryisnever100%safe.Goodavalanchesafety isacontinuous{{U}}?61?{{/U}}includingrouteselectionand examinationofthesnowpackweather{{U}}?62?{{/U}}andhuman factors.Severalwell-knowngoodhabitscanalso{{U}}?63?{{/U}}the risk.Iflocalauthoritiesissueavalancheriskreportstheyshouldbe consideredandallwarningsshouldbepaid{{U}}?64?{{/U}}to.Never followinthetracksofotherswithoutyourownevaluations;snowconditionsare almostcertaintohavechangedsincetheyweremade.Observetheterrainand noteobviousavalanchepathswhereplantsare{{U}}?65?{{/U}}or damaged.Avoidtravelingbelowotherswhomighttriggeran avalanche.
ThequakesrecordedduringthefirstweekofAprilintheareaofMountSaintHelenswarnedscientistsofaneweruption.
Paragraph6______
TheboysinJonesboroandChicagoapparentlylackedasenseof
Theoldlady{{U}}let{{/U}}herflattoanEnglishcouple.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ???{{B}}AvalancheandItsSafety{{/B}}??Anavalanche isasuddenandrapidflowofsnowoftenmixedwithairandwaterdowna mountainside.Avalanchesare{{U}}?51?{{/U}}thebiggestdangersinthe mountainsforbothlifeandproperty.??Allavalanchesarecaused byanover-burdenofmaterialtypicallysnowpackthatistoomassiveand unstablefortheslope{{U}}?52?{{/U}}supportsit.Determiningthe criticalloadtheamountofover-burdenwhichis{{U}}?53?{{/U}}to causeanavalanche{{U}}?54?{{/U}}acomplextaskinvolvingthe evaluationofanumberoffactors.??Terrainslopesflatterthan 25degreesorsteeperthan60degreestypicallyhavealow{{U}}?55 ?{{/U}}ofavalanche.Snowdoesnot{{U}}?56?{{/U}}significantlyon steepslopes;alsosnowdoesnot{{U}}?57?{{/U}}easilyonflatslopes. Human-triggeredavalancheshavethegreatestincidencewhenthesnow’sangleof restis{{U}}?58?{{/U}}35and45degrees;thecriticalangletheangle atwhichthehumanincidenceofavalanchesisgreatestis38degrees.Therule ofthumbis:Aslopethatis{{U}}?59?{{/U}}enoughtoholdsnowbut steepenoughtoskihasthepotentialtogenerateanavalancheregardlessof theangle.Additionallyavalancheriskincreaseswith{{U}}?60?{{/U}}; thatisthemoreaslopeisdisturbedbyskiersthemorelikelyitisthatan avalanchewilloccur.??Ductothecomplexityofthesubject wintertravellinginthebackcountryisnever100%safe.Goodavalanchesafety isacontinuous{{U}}?61?{{/U}}includingrouteselectionand examinationofthesnowpackweather{{U}}?62?{{/U}}andhuman factors.Severalwell-knowngoodhabitscanalso{{U}}?63?{{/U}}the risk.Iflocalauthoritiesissueavalancheriskreportstheyshouldbe consideredandallwarningsshouldbepaid{{U}}?64?{{/U}}to.Never followinthetracksofotherswithoutyourownevaluations;snowconditionsare almostcertaintohavechangedsincetheyweremade.Observetheterrainand noteobviousavalanchepathswhereplantsare{{U}}?65?{{/U}}or damaged.Avoidtravelingbelowotherswhomighttriggeran avalanche.
Icannolonger{{U}}tolerate{{/U}}hisactions.
Shestoodtherecryingand{{U}}trembling{{/U}}withfear.
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