PEclassesusuallymeanrunning，jumpingandplayingballgames．ButstudentsatAspireMiddleSchoolinLacey，WashingtonspendtheirPEclassesdoingyoga．"PEhasbeeneitherdanceoryogasincewestarted，"saidtheheadmasterMoni

　　PEclassesusuallymeanrunning，jumpingandplayingballgames．ButstudentsatAspireMiddleSchoolinLacey，WashingtonspendtheirPEclassesdoingyoga．

　　"PEhasbeeneitherdanceoryogasincewestarted，"saidtheheadmasterMonicaSweet．"They'rebothverypopularclasses．"

　　TeacherAnneKohlbrydevelopedtheyogaprogramandbeganteachingitwhentheschoolopenedin2009．Eachclasslastsabout50minutes．Itincludessomewarm-upactivitiessuchaswalkinglaps（跑道的圈） aroundtheschool，controlledbreathing，stretches （伸展） andafewminutesofrelaxation．

　　Kohlbryusuallyplaysclassicalmusicwhilestudentsstretchonyogamats．Theypracticeseveralclassicposes．Forexample，todothemountainpose，studentsstandtallwithfeettogether．Theytakeadeepbreathandraisetheirhandsovertheirhead．Theirpalms（手掌） faceeachotherwitharmsstraight．Thentheytrytoreachuptowardtheskywiththeirfingertips．

　　Whendoingyoga，studentsneedtobecalmandfindthebalanceoftheirbodies．Ithelpsthemfocus，accordingtoKohlbry．

　　"Focusisabigthing-middleschoolkidsaresodistracted（分心的），"shetoldthelocalnewspaperTheOlympian．

　　Yogaalsomakesstudentshealthier．

　　"I'vehadalotofkidssaying，'Madam，I'vedevelopedasix-packmuscle（肌肉 ）'becausewedoalotofstrengthtraining，"shesaid．

　　Eighth-graderJessicaWallingford，14，likestheclass．"InthetwoyearsthatI'vebeenhere，therearealotofthingsI'veimprovedon．It'sprettycool．It'sbetterthanrunninglaps，"shesaid．

　　"Itfeelslikeexercise，"saidThomasShiveley，11．"It'snottiring，butit'sgoodexercise．"

　　29．PEclassesatAspireMiddleSchoolarespecialbecausethestudentsareaskedto___．

　　A．runontheplayground

　　B．doyoga

　　C．playballgames

　　D．jump

　　30．Doingyogacanhelpthestudents___．

　　A．keepbalance

　　B．getexcited

　　C．becomefocused

　　D．cotroltheirbreath

　　31．Whichwordhasthesamemeaningas"focus"inthepassage？___

　　A．Attention．

　　B．Force．

　　C．Distraction，