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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

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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

写出水力半径R的表达式为:（）。