Unit4BodylanguageⅠ.阅读理解A体裁：说明文话题：学习词数：368时间：6′Studentsperformbetterwhentheirinstructorsusehandgestures—asimpleteachingtoolthatcouldgeneratebenefitsinhigher－levelmathsuchasalgebra(代数)．AstudypublishedinChildDevelopment，thetop－rankededucationalpsychologyjournal，providessomeofthestrongestevidenceyetthatgesturingmayhaveauniqueeffectonlearning.TeachersintheUnitedStatestendtousegestureslessthanteachersinothercountries.“Gesturingcanbeaverybeneficialtoolthatiscompletelyfreeandeasilyemployedinclassrooms，”saidKimberlyFenn，studyco－authorandassistantprofessorofpsychologyatMichiganStateUniversity.“AndIthinkitcanhavelong－lastingeffects.”FennandRyanDuffyofMSUandSusanCookoftheUniversityofIowaconductedanexperimentwith184second－，third－andfourth－gradersinMichiganelementaryclassrooms.Halfofthestudentswereshownvideosofaninstructorteachingmathproblemsusingonlyspeech.Theotherswereshownvideosoftheinstructorteachingthesameproblemsusingbothspeechandgestures.Inthespeech－onlyvideos，theinstructorsimplyexplainstheproblem.Intheothervideos，theinstructorusestwohandgestureswhilespeaking，usingdifferenthandstorefertothetwosidesoftheequation.Studentswholearnedfromthegesturevideosperformedbetteronatestgivenimmediatelyafterwardthanthosewholearnedfromthespeech－onlyvideo.Anothertestwasgiven24hourslater，andthegesturestudentsactuallyshowedimprovementintheirperformancewhilethespeech－onlystudentsdidnot.Whilepreviousresearchhasshownthebenefitsofgesturesinaone－on－onetutoring－styleenvironment，thenewstudyisthefirsttotesttheroleofgesturesinequivalencelearninginaregularclassroom.Thestudyalsoisthefirsttoshowthatgesturescanhelpstudentstransferlearningtonewcontexts—suchastransferringtheknowledgelearnedinanaddition－basedequationtoamultiplication－basedequation.FennnotedthatU．S.studentslagbehindthoseinmanyotherWesterncountriesinmathandhaveaparticularlyhardtimemasteringequivalenceproblemsinearlygrades.“Soifwecanhelpthemgraspthisfoundationalknowledgeearlier，”shesaid，“itwillhelpthemastheylearnalgebraandhigherlevelsofmathematics.”1．Whichofthefollowingcanbethebesttitleforthepassage?A．HowtoLearnHigher－levelMathWellB．SimpleTeachingToolsUsedinMathLearningC．Teachers'GesturesBoostMathLearningD．WhyU．S.StudentsCan'tLearnMathWell答案C[主旨大意题。文章根据一项实验说明：老师在讲课时用手势语可以提高学生的数学学习能力。故选项C可以作文章的标题。]2．Researchersexplaintheiropinionintheeducationalpsychologyjournalby________．A．settingdowngeneralrulesB．usingagreatmanyexamplesC．makingquestionnairesurveyD．presentingresearchfindings答案D[推理判断题。根据文章内容可知，研究者根据实验得出结论：手势语这种简单的教学手段可以让学生在数学学习上得到提高。他们是根据研究结果来解释这一观点的。]3．WhatdoyouknowabouttheexperimentconductedbyKimberlyFenn?A．Theexperimentwasdonewith184studentsofthesameageinelementaryclassrooms.B．Thestudentsweredividedintotwogroupsandgotdifferentteachingmethods.C．Researchersdrewtheconclusionbasedontheonlyonetesttheydidintheexperiment.D．Researchershadnotdoneanyresearchonthebenefitsofgesturesbeforethisone.答案B[细节理解题。根据Halfofthestudentswereshownvideosofaninstructorteachingmathproblemsusingonlyspeech.Theotherswereshownvideosoftheinstructorteachingthesameproblemsusingbothspeechandgestures.可知，在实验中，学生们被分成两个部分并用不同的教学方法给他们讲解数...
