Withouttransportation,therecouldbenotrade.Withouttrade,therecouldbenotownsandcities.Townsandcities aretraditionallythe___16___ofcivilization.Therefore,transportationhelpsmakecivilization___17___.

Throughoutmostoftheprehistoricperiod,peoplelivedbyhunting,fishing,and___18___wildplants.They hadnobeastsofburden,wheeledvehicles,orroads.Peopletraveled___19___andcarriedtheirinfantsand belongingsstrappedtotheirbacksorheads.Loadstooheavyforonepersontocarrywerestrappedtoapoleandcarriedbytwopeople.

___20___,peoplelearnedthattheycoulddragloadsalongthegroundonsledges.Duringlateprehistoric times,peoplebegantobuildsledgeswithrunners. Whenpeopledevelopedagricultureandbegantoestablish___21___settlements,tradebetweensettlements

startedtodevelop,whichcreatedaneedforbetter___22___oftransportation.Thedonkeyandtheox,whichhad beentamedforfoodproductsandfarmwork,helped___23___thisneed.Theuseofdonkeysandoxenasbeastsof burdenenabledpeopleto___24___heavierloadsthantheycouldbefore.

Peoplealsobegantodevelopwatertransportationduringprehistorictimes.Theybuiltraftsofsuch__25____aslogs orreeds.Later,peoplelearned___26___tomakedugoutsandcanoes.Peoplepaddledtheseearlycraftwiththeirhands

orpropelledthemwithpaddlesor__27____.

Thewheelwasinventedabout3500B.C.andsailboatabout3200B.C.Wheeledvehiclesandsailingvessels___28___transportation.Butthespeedoftransportationimprovedonly___29___overthecenturies.Inventorsproducedthefirstengine-___30___vehiclesduringthelate1700’sandtheearly1800’s.This developmentmarkedthebeginningofarevolutionintransportationthathascontinuedtothepresent.

16.A.highlightsB.pinpointsC.headquartersD.centers

17.A.possibleB.acceptableC.practicalD.typical

18.A.growingB.gatheringC.wateringD.moving

19.A.inturnB.ateaseC.onfootD.forfun

20.A.AllthewhileB.ForawhileC.IntimeD.Ontime

21.A.temporaryB.permanentC.regularD.steady

22A.knowledgeB.judgmentC.standardsD.means

23.A.recognizeB.developC.meetD.reduce

24.A.bearB.moveC.shareD.lift

25.A.materialsB.stylesC.itemsD.types

26.A.whereB.whenC.howD.as

27.A.polesB.sailsC.currentsD.winds

28.A.demonstratedB.revolutionizedC.witnessedD.initiated

29.A.considerablyB.continuouslyC.swiftlyD.slightly

30.A.poweredB.controlledC.orientedD.related

护理人员应设身处地的为患者着想，主动关心、耐心细致做好术前________，解除其种种疑虑，最终能使患者以稳定的情绪和乐观的态度迎接手术。保证手术顺利进行的基础和手术成功的必要条件是________。

统计表多采用三线条，即顶线、______、纵标目下的横线。

胰岛素抵抗是指机体对一定量胰岛素的生物学反应()预计正常水平的一种现象。

甲型肝炎病人自发病之日起隔离____周。

触发机制作为公共政策的催化剂，其作用的发挥源于（）、（）和（）这三个影响因素的互动。

毒物吸收的三大主要途径包括消化道、呼吸道和______。

is,are,was,were,willbe,aregoingtobe,have,has,hadThebeautiful________somethingthattheinnocent________notalwaysabletoappreciatefully.

新生儿评分的五项体征是______、______、______、______、______.

急性重症胰腺炎患者，因血液、胰酶及坏死组织液穿过筋膜与肌层渗入腹壁下可在()或两侧胁腹部皮肤出现灰紫色斑，分别称为Cullen征和Grey-Turner征。