英語六級(jí)閱讀答案

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英語六級(jí)閱讀答案

Inthelasttwohundredyearstherehavebeengreatchangesinthemethodofproductionofgoods.Thisisnowalsotrueofthebuildingindustry;formechanizationhasbeenintroduced.Systembuildingcansavebothtimeandmoney.Theprincipleofsystembuildingisthatthebuildingismadefromasetofstandardunits.Theseareeithermadeatthebuilding-siteoratafactory.Somedesigners,infact,arestandardizingthedimensionsofrooms.Theyaremadeinmultiplesofasinglefixedlength,usuallytencentimeters.Thisiscalledamodular(標(biāo)準(zhǔn)件的)system,anditmeansthatmanufacturescanproducestandardizedfittingsatalowercost.Themostimportantfactaboutsystembuildingisitsspeed.Aten-storeyflat,forexample,canbecompletedinfourmonths.

Thereareseveralnewmethodsofsystembuilding.Oneisthepanelmethod.Inthiscase,theconstructioncompanysometimeserectsafactoryonthesite.Thewallsandfloorsofthebuilding,calledpanels,arecastinahorizontalorverticalposition.Conduitsforelectricalwiresandsleevesforpipesarecastinthepanelswhentheyarebeingmade.Themouldsformakingthesecastingsaresituatedallaroundthebuilding.

Aftertheconcretepanelsarecast,theyareallowedtosetandhardenforaweek.Nexttheyareliftedbyatowercraneontoanysectionofthebuilding.Therethepanelsarecementedtogetherattheirjointsandthefloorcoveringislaid.

Afterthepanelshavebeencementedtogether,thecraneliftsacaseintothearea.Itcontainsallthefittingstobeinstalled,suchaswash-basins,radiatorsandpipes.Finishingtradesmen,suchasplumbers,plasterers,paintersandelectricians,followbehindtocompletethework.Insomebuildingdevelopments,insomecountries,wholeflatswithinternalfeaturesliketheirbathrooms,bedroomsandconnectingstairs,andweighingasmuchastwentytons,arecarriedtothebuilding-siteready-made.Agiantoverheadcraneisusedtoliftthemintoposition.Inthefuture,thismethodmaybecomemorewidespread.

1.Themaindifferencebetweenpanelmethodandthemethoddiscussedinthelastparagraphis_______.

A.thelatterusesready-madeinternalfeatures

B.panelsarecastinalevelposition

C.theformerisusedtobuildwallsandfloorswhilethelattertoconstructbathroomsorbedrooms

D.theformerismoreexpensivethanthelatter

2.WhichofthesestatementsisTRUEofsystembuilding?

A.Itemploysmoremen.B.Itisdifficultanddangerous.

C.Itcansavebothtimeandmoney.D.Itmeanslessmechanization.

3.Accordingtothepassage,theprincipleofsystembuildingisthat_______.

A.constructionmethodsaresafer

B.buildingsaremadefromasetofstandardizedunits

C.similarbuildingscanbeproduced

D.allunitsareproducedonthesite

4.Theusualfixedlengthinthemodularsystemis_______.

A.twentycentimetersB.tenmillimeters

C.fiftycentimetersD.tencentimeters

5.Whatliftstheconcrete