简述科学观察的特征。
(1)有观察之前先有一定的研究目的或假设，然后根据研究目的获取资料。
(2)需要系统的观察设计。
(3)有系统完整的观察记录。
(4)观察过程避免主管和偏见。
(5)观察过程和获得的资料可以重复查证。
暂无解析
翻译：
Asthesourceofaluminumisalmostinexhaustible,wecanexpectthatmoreandmoreuseswillbefoundforthisversatilemetal.(PassageTwo)
Inthelast12yearstotalemploymentintheUnitedStatesgrewfasterthanatanytimeinthepeacetimehistoryofanycountry–from82to110millionbetween1973and1985–thatis,byafullonethird.Theentiregrowth,however,wasinmanufacturing,andespeciallyinno–blue-collarjobs…
Thistrendisthesameinalldevelopedcountries,andis,indeed,evenmorepronouncedinJapan.Itisthereforehighlyprobablethatin25yearsdevelopedcountriessuchastheUnitedStatesandJapanwillemploynolargeraproportionofthelaborforceInmanufacturingthandevelopedcountriesnowemployinfarming–atmost,10percent.TodaytheUnitedStatesemploysaround18millionpeopleinblue-collarjobsinmanufacturingindustries.By2010,thenumberislikelytobenomorethan12million.Insomemajorindustriesthedropwillbeevensharper.Itisquiteunrealistic,forinstance,toexpectthattheAmericanautomobileindustrywillemploymorethanone–thirdofitspresentblue-collarforce25yearshence,eventhoughproductionmightbe50percenthigher.
Ifacompany,anindustryoracountrydoesnotinthenextquartercenturysharplyincreasemanufacturingproductionandatthesametimesharplyreducetheblue-collarworkforce,itcannothopetoremaincompetitive–oreventoremain“developed.”Theattempttopreservesuchblue–collarjobsisactuallyaprescriptionforunemployment…
ThisisnotaconclusionthatAmericanpoliticians,laborleadersorindeedthegeneralpubliccaneasilyunderstandoraccept.WhatconfusestheissueevenmoreitthattheUnitedStatesisexperiencingseveralseparateanddifferentshiftsinthemanufacturingeconomy.Oneistheaccelerationofthesubstitutionofknowledgeandcapitalformanuallabor.Wherewespokeofmechanizationafewdecadesago,wenowspeakof“robotization“or“automation.”Thisisactuallymoreachangeinterminologythanachangeinreality.WhenHenryFordintroducedtheassemblylinein1909,hecutthenumberofman–hoursrequiredtoproduceamotorcarbysome80percentintwoorthreeyears–farmorethananyoneexpectstoresultfromeventhemostcompleterobotization.Butthereisnodoubtthatwearefacinganew,sharpaccelerationinthereplacementofmanualworkersbymachines–thatis,bytheproductsofknowledge.
1.Accordingtotheauthor,theshrinkageinthemanufacturinglaborforcedemonstrates______.
A.thedegreetowhichacountry’sproductionisrobotized
B.areductioninacountry’smanufacturingindustries
C.aworseningrelationshipbetweenlaborandmanagement
D.thedifferencebetweenadevelopedcountryandadevelopingcountry
2.Accordingtotheauthor,incoming25years,adevelopedcountryorindustry,inordertremaincompetitive,oughtto______.
A.reducethepercentageoftheblue-collarworkforce
B.preserveblue–collarjobsforinternationalcompetition
C.acceleratemotor–canmanufacturinginHenryFord’sstyle
D.solvetheproblemofunemployment
3.Americanpoliticiansandlaborleaderstendtodislike_____.
A.confusioninmanufacturingeconomy
B.anincreaseinblue–collarworkforce
C.internalcompetitioninmanufacturingproduction
D.adropintheblue–collarjobopportunities
4.Theword“prescription”in“aprescriptionforunemployment”maybetheequivalentto______
A.somethingrecommendedasmedicaltreatment
B.awaysuggestedtoovercomesomedifficulty
C.somemeasurestakeninadvance
D.adevicetodire
5.Thispassagemayhavebeenexceptedfrom________
A.amagazineaboutcapitalinvestment
B.anarticleonautomation
C.amotor-carmagazine
D.anarticleonglobaleconomy
医患关系三个基本模式是
PartVWriting
Directions:Forthispart,youareallowed30minutestowriteacompositiononthetopic:KeepingFit.Youshouldwriteatleast100—120wordsandyoushouldbaseyourcompositionontheoutline(giveninChinese)below:
1、保持健康的重要性;
2、保持健康的有效途径;
3、我的做法。
PartIVTranslation
Itwouldhavebeendifficultforthemtoavoidtheconclusionthatthehorseandmulepopulationwoulddeclinerapidly.(PassageFour)
