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1、99年改错Thehunter-gatherertribesthattodayliveasourprehistoric1.______humanancestorsconsumeprimarilyavegetabledietsupplementing2._____withanimalfoods.Ananalysisof58societiesofmodemhunter-gatherers,includingtheKungofsouthernAfrica,revealedthatonehalfemphasizegat
2、heringplantfoods,one-thirdconcentrateonfishingandonlyone-sixthareprimarilyhunters.Overall,two-thirdsandmoreofthehunter-gatherer’scaloriescomefromplants.Detailed3.______studiesoftheKungbythefoodscientistsattheUniversityofLondon,showedthatgatheringisamoreprod
3、uctivesourceoffoodthanishunting.Anhourofhuntingyieldsinaverageabout1004.______ediblecalories,asanhourofgatheringproduces240.5.______Plantfoodsprovidefor60percentto80percentoftheKung6._______diet,andnoonegoeshungrywhenthehuntfails.Interestingly,iftheyescapef
4、atalinfectionsoraccidents,thesecontemporaryaborigineslivetooldagesdespiteoftheabsenceofmedicalcare.7._______Theyexperiencenoobesity,nomiddle-agedspread,littledentaldecay,nohighbloodpressure,onheartdisease,andtheirbloodcholesterollevelsareverylow(abouthalfof
5、theaverageAmerican8._______adult),ifnooneissuggestingwhatwereturntoanaboriginallife9.________style,wecertainlycouldusetheireatinghabitsasamodelfor10.________healthierdiet.2000改错ThegrammaticalwordswhichplaysolargeapartinEnglish grammarareforthemostpartsharp
6、lyandobviouslydifferent1._______ fromthelexicalwords.Aroughandreadydifferencewhichmay seemthemostobviousisthatgrammaticalwordshave“less meaning”,butinfactsomegrammarianshavecalledthem2._______ “empty”wordsasopposedinthe“full”wordsofvocabulary.3.________
7、 Butthisisarathermisledwayofexpressingthedistinction.4._________ Althoughawordliketheisnotthenameofsomethingasmanis, itisveryfarawayfrombeingmeaningless;thereisasharp5._________ differenceinmeaningbetween“manisvileand”“themanis vile”,yettheisthesinglev
8、ehicleofthisdifferenceinmeaning.6.________ Moreover,grammaticalwordsdifferconsiderablyamong themselvesastheamountofmeaningtheyhave,eveninthe7.________ lexicalsense.Anothernameforthegrammaticalwords