中国大学MOOC:Task:ReadthearticleaboutakindoffitnesstrainingcalledHIIT.Thenchoosethebestexplanationsforsomeofthewordsandexpressions.HIIT:Isthefitnessscenesbiggestfaddoingmoreharmthangood?1.HighIntensityIntervalTraining(HIIT)hasbeenthedarlingofthefitnesssceneforafewyearsnow.Fundamentally,itinvolvesrepetitionsofshortburstsofintense,maximaleffortexercise;usuallyforanywherebetween20to40seconds.2.ThetheorybehindHIITisveryappealing.Byworkingoutatyourtoplevelofexertion,youburnmorecaloriesinashortspaceoftimethanotherworkouts.Whatsmore,studiesshowthatyourmetabolismstaysinaheightenedstateforupto24hoursafteryouvefinished.Andinpractice,HIITcanhaveimpressiveresults.Itsaneffectivetoolforincreasingcardiovascularfitness,sculptingyourphysiqueandincreasingmetabolicrate.HencewhyHIITclassesarepoppingupallovertheplace.Peoplehavebecomeaccustomedtoturninguptoaclasswithloudmusicanddarklighting,justlikeanightclub–andleavinginthesamestate:barelyabletowalk.3.However...IhaveabigbonetopickwithHIIT,whichisthattheresoftennofocusonformortechniqueintheseclasses,eventhoughitsnowprescribedasthego-toformofexerciseforeveryone.Instead,themeasureofagoodHIITsessionsseemstobehowdestroyedyoufeelafteraclass.Itsinevitablethatproblemsarisefromthisallpainforgainapproach.4.Oneissueissimplythatpeoplearedoingworkoutsthattheyrenotconditionedfor.Thereisnoemphasisonflexibility,mobilityoractivationinmanyHIITclasses;yetallareincrediblyimportantinkeepingthebodyfitandhealthyasyouage.5.Whatsmore,Iregularlyseepeople“smashing”multipleHIITclassesaday,5-6daysperweek.HIITshouldnotbedonemorethanthreetimesperweek(atmost),becauseitissostrenuous.Itputsanincrediblestrainonyournervoussystem,jointsandmuscles;especiallyifyouareoverweightandunfit.6.TheHIITapproachtoexercisehasgoneOTT.Itsenteringunsustainableterritory.7.HIIT’sriseinpopularityissymptomaticofwhatiswrongwiththefitnessindustryasawhole:abrazendisregardofthefundamentals,andadetrimental“onesizefitsall”mentality.Havingtrained100sofclientsinmyfiveyearsasapersonaltrainer,thebiggestissuesmostpeoplehavearealackofflexibility,mobilityandcorestrength,ontopofmuscleactivationissues.AlloftheabovecanleadtochronicinjuriesandarefurtherexacerbatedbyHIIT.8.Mybeliefisthateveryoneshouldtrytotrainlikeathletesdo.Idon’tmeanthesametrainingfrequencyandintensityasathletes,Imeanthementalityandtheapproach.Havingtrainedasacompetitivesprinterforfouryears,Ilearnedtotakeeveryaspectofmylifeintoaccount:sleep,restdays,nutritionandweaknesses.Ilearnttolistentomybody.SomedaysIwouldwakeupfeelingtiredandfatigued,soonthosedaysIwouldn’ttrainhard.Iwoulddosomethinglessintenseandfocusonrecovery.9.Remember:burningcaloriesisntthebeallandendalloffitnessandgoodhealth.Yes,HIITmayburnmorecaloriesthananyotherformofexercise,butitsnouseifitleadstoinjuryorillness.Overtrainingisarealdanger:itcanruinyourimmunesystem,causeinsomnia,affectyourappetiteandreleasecortisol,whichinturncanmakeyoumorelikelytoputonfat.********************************************Whatdoestheword“fad”inthetitleprobablymean?

以下关于大数据和传统数据库数据的特点描述不正确的是（） A: 大数据是对“池塘中的鱼”进行数据处理，目标明确；传统数据库的数据处理，是通过某些“鱼”判断其他种类的“鱼”是否存在 B: 大数据的数据规模很大，一般以TB.PB作为数据处理单位；传统数据库中数据规模一般较小，常以MB作为数据处理单位 C: 在大数据中，并没有统一的数据工具，即“Nosizefitsall”；在传统数据库中，在某种特定业务场景下，常常一个工具就能解决某个问题，即“Onesizefitsall” D: 大数据处理的数据类型很多，包括结构化、非结构化和半结构化的数据；传统数据库的数据类型较为单一，常以结构化数据为主