【阅读理解Physicallyactivechildrenmaybemorelikelytobecomeactiveandhealthyadults．IntheUnitedStateselementaryandmiddleschoolsareadvisedtogivestudentstwoandahalfhoursof】

　　阅读理解

　　Physicallyactivechildrenmaybemorelikelytobecomeactiveandhealthyadults．IntheUnitedStateselementaryandmiddleschoolsareadvisedtogivestudentstwoandahalfhoursofphysicalactivityaweek．

　　Yetmanyschoolsacrossthecountryhavereducedtheirphysicaleducationprograms．Criticism(批评)ofthecutshasledinsomeplacestoeffortstogivestudentsmoretimeforexercisenotless．

　　Astudyreportedthatlifeexpectancy(预期寿命)hasfallenorisnolongerincreasinginsomepartsoftheUnitedStates．ThesituationisworstamongpoorpeopleintheSouthernStates．Publichealthresearcherssayitislargelytheresultofincreasesinobesity(肥胖)smokingandhighbloodpressure．Theyalsoblamedifferencesinhealthservicesaroundthecountry．

　　Astudyfoundthatonlyfourpercentofelementaryschoolsprovideddailyphysicaleducationallyearforallgrades．Thiswastrueofeightpercentofmiddleschoolsandtwopercentofhighschools．Thestudyalsofoundthattwenty-twopercentofallschoolsdidnotrequirestudentstotakeanyP．E．

　　CharleneBurgesonistheexecutivedirectoroftheNationalAssociationforSportPhysicalEducation．ShesaysoneproblemforP．E．teachersisthatschoolsareunderpressuretoputmoretimeintoacademic(普通文化课的)subjects．

　　Alsoparentsmayagreethatchildrenneedexerciseinschool．Yetmanyparentsstillhavebadmemoriesofbeingchosenlastforteamsbecauseteachersfavoredthegoodathletesinclass．

　　ButexpertssayP．E．classeshavechanged．Theysaythegoalhasmovedawayfromcompetitionandtowardpersonalperformanceasawaytobuildalifetimeofactivity．Thesedaysteachersoftenleadactivitieslikeweighttraining．

　　SomeparentsliketheideaofavoidingcompetitivesportsinP．E．class．Yetotherssurelydislikethatidea．Intheendschoolsmayfindthemselvesinano-winsituation．

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　　Theauthormentionslifeexpectancyhasfalleninso