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Rearrangethefollowingdetailsinalogicalordertodescribeayardwhich,bythepresenceofchildren,hasbeenchangedfromalonely,vacantplotofgrasstoacenterofconstantactivity.1)Intheleft-handcornerofthebackpartoftheyardsitsahuge,circularswimmingpoolwithabeachtowelhangingononesideandaslidingboardsurroundedbyfloatingballsandinnertubesontheother.2)Theleftfrontpartoftheyardcontainsaswingsetthathasbeenusedsooftenthatthegrassarounditsimplyrefusestogrowanymore.3)TheoncedesertedlotonSouthStreethascomebacktolifesincetheJohnsonfamilyboughtit.4)Nowthattheyardisacenterofconstantactivity,onewouldneverguessthatitwasoncejustalonely,vacantplot.5)Therightsideoftheyard,whichusedtobelinedwithweedsandbushes,isnowborderedbyacyclonefencetokeepinthecatandthedog.6)Nexttothegarageontherightsideofthefrontpartoftheyard,standasmall,redtricycle,asleeknewfive-speedbike,andawoodenskateboard.7)Furtherdowntheleftsideoftheyard,oneimmediatelynoticesthetrampledhedgeswherekidshaverepeatedlytakenashortcutintotheneighbor'syardtoretrievetheirbaseball.8)Theoldmapletreeintheothercornerofthebackyardisnowgracedwithahumblebutsturdyhomemadetreehousecompletewitha"KEEPOUT"signpaintedonthefront.

A. 3)2)7)8)1)6)5)4)
B. 2)3)7)5)1)8)4)6)
C. 3)2)7)1)8)5)6)4)
D. 5)6)3)4)2)7)1)8)

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4.Howdoesthewriterorganizehisdescription?Afatbrowngooselayatoneendofthetableandattheotherend,onabedofcreasedpaperstrewnwithsprigsofparsley,layagreatham,strippedofitsouterskinandpepperedoverwithcrustcrumbs,aneatpaperfrillrounditsshinandbesidethiswasaroundofspicedbeef.Betweentheserivalendsranparallellinesofside-dishes:twolittlebowlsofjelly,redandyellow,alargegreenleaf-shapeddishwithastalk-shapedhandle,onwhichlaybunchesofpurpleraisinandpeeledalmonds,acompaniondishonwhichlayasolidrectangleofSmyrnafigs,adishofcustardtoppedwithgratednutmeg,asmallbowlofchocolatesandsweetswrappedingoldandsilverpapersandaglassvaseinwhichstoodsometallcelerystalks.Inthecenterofthetabletherestood,assentriestoafruit-standwhichupheldapyramidoforangesandAmericanapples,twosquatold-fashioneddecantersofcutglass,onecontainingportandtheotherdarksherry.

A. Chronologicalorder
B. Spatialorder
C. Scale-of-importanceorder

Putthefollowingwordsandphrasesintheblanks;eachwordandphrasecanonlybeusedonce.ononesideofmutedontheothersideofsoftnapnexttoorangelightedsizzlingcozyMykeysnapsopenthelockonthethickwoodendoor,andIfeelawarmrushofairasIwalkintothe1)________livingroom.Thewholeroomisdonein2)_________bluesandgreens.Thereisathickheavybluerugthatrunsfromwalltowall.3)_________theroomisabig,paddedgreenarmchair.Thearmslookliketheywanttopullyouinandholdyou.4)_________thechairisthetelevision,whichisturnedonataquietlevelandgivesoffthe5)_________soundsofvoicesandlaughter,whilecolorsflickacrossthescreen,6)_________theroomisaroyal-bluecouchsosoftanddeepthatitlookslikeaninvitationtotakea7)_________.Thewholebackwall,exceptfortheentrancetothekitchen,ismadeofbrickandfeaturesalargefireplace.The8)_________coalsofthefiresendawarmglowintotheroomandgiveoffquietcracklesandpops.Fromthe9)________kitchencomesthesmellofporkchops10)________invegetableoil,andthefootstepsofmymotherasshepreparesourdinner.I'mgladtobehome.

在等直径长直管道中,液体的温度不变,当流量逐渐增大,管道内的雷诺数Re将逐渐()。

A. 增大
B. 减小
C. 不变
D. 不一定

紊流粗糙区的水头损失与流速成 ()

A. 一次方关系
B. 二次方关系
C. 1.75~2.0次方关系
D. 不能确定

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