潜伏期是从规律宫缩开始到宫口开大3cm，正常为()小时;超过()小时为潜伏期延长。

Passage4

Questions16to20arebasedonthefollowingpassage:

IrecentlywroteanautobiographyinwhichIrecalledmanyoldmemories.Oneofthemwasfrommyschooldays,whenourninthgradeteacher,MissRaber,wouldpickoutwordsfromtheReader’sDigesttotestourvocabulary.

Today,morethan45yearslater,Ialwayscheckout“ItpaystoEnrichYourWordPower”firstwhentheDigestcomeseachmonth.Iamimpressedwiththatidea,wordpower.Reader’sDigestknowsthepowerthatwordshavetomovepeople—toentertain,inform,andinspire.TheDigesteditorsknowthatthebigwordisn’talwaysthebestword.Takejustoneexample,aQuotableQuoteformtheFebruary1985issue:”Timeisaplayfulthing.Itslipsquicklyanddrinksthedaylikeabowlofmilk.”

Nineteenwords,onlytwoofthemmorethanonesyllable,yethowmuchtheyconvey!That’susuallyhowitiswithReader’sDigest.Smallandsimplecanbeprofound.

AschairmanofafoundationtorestoretheStatueofLiberty,I’vebeenmakingalotofspeecheslately.Itrytokeepthemfairlyshort.Iusesmallbutvividwords:wordslike“hope”,“guts”,“faith”,“dreams”.ThosearewordsthatmovepeopleandsaysomuchaboutthespiritofAmerica.

Don’tgetmewrong.I’mnotagainstusingbigwords,whenitisrighttodoso,butIhavealsolearnedthatasmallwordcanworkasmallmiracle—ifit’srightword,intherightplace,attherighttime.It’sa“secret”thatIhopeneverforget.

16.Thepassageismainlyabout.

A.oneofthemanyoldmemories

B.usingsimplewordstoexpressprofoundideas

C.Reader’sDigestandschoolspeeches

D.howtomakeeffectivespeeches

17.ItseemsthatReader’sDigestisamagazinepopularwith.

A.peopleofallagesB.teenagersC.schoolteachersD.elderlyreaders

18.Theexampletheauthorgivesinthesecondparagraphmightmean.

A.onespendshisdayplayinganddrinking

B.don’twasteyourtimeasonedoes

C.timeslipseasilyifyoudon’tmakegooduseofit

D.timeisjustlikedrinkingmilkfromabowl

19.Theauthor’s“secret”is.

A.toavoidusingbigwordsatanytime

B.tousewordsthathavethepowertomovepeople

C.toworkamiraclebyusingasmallword

D.tousesmallandsimplewordswherepossible

20.Accoedingtotheauthor,well-chosenwordscangivepeople.

A.hope,courageandideas

B.confidence,determinationandstrength

C.pleasure,knowledgeandencourage

D.entertainment,informationandpower

Questions16to20arebasedonthefollowingpassage:

中国共产党成立大会于()召开.

初产妇，第二产程，何时应开始保护会阴

Duringthesetenyears,manynewmethodshavebeen___inthefieldofforeignlanguageteaching.