Stonehenge，arockcircle，isnotonlyoneofBritain'smostfamoushistoricalplacesbutalsooneofitsgreatestmysteries．Everyyearitreceivesmorethan750，000visitors．PeopleliketogotothisplaceespeciallyinJuneastheywanttoseethesunrisingonthelongestdayoftheyear．
Formanyyears，historians（历史学家）believedStonehengewasatemplewhereancientleaderstriedtocommunicatewiththegods．However，historianPaulStokerthinksthiscan'tbetruebecauseStonehengewasbuiltsomanycenturiesago．"TheleadersarrivedinEnglandmuchlater，"hepointsout．
AnotherpopularideaisthatStonehengemightbeakindofcalendar．Thelargestoneswereputtogetherinacertainway．Onmidsummer'smorning，thesunshinesdirectlyintothecenterofthestones．Otherpeoplebelievethestoneshaveamedicalpurpose．Theythinkthestonescanpreventillnessandkeeppeoplehealthy．"Asyouwalkthere，youcanfeeltheenergyfromyourfeetmoveupyourbody，"saidonevisitor．NooneissurewhatStonehengewasusedfor，butmostagreethatthepositionofthestonesmustbeforaspecialpurpose．Somethinkitmightbeaburial（埋葬）placeoraplacetohonorancestors（祖先）．Othersthinkitwasbuilttocelebrateavictoryoveranenemy．
Stonehengewasbuiltslowlyoveralongperiodoftime．Mosthistoriansbelieveitmustbealmost5，000yearsold．Oneofthegreatestmysteriesishowitwasbuiltbecausethestonesaresobigandheavy．In2001，agroupofEnglishvolunteerstriedtobuildanotherStonehenge，buttheycouldn't．"Wedon'treallyknowwhobuiltStonehenge，"saysPaulStoker．"Andperhapswemightneverknow，butwedoknowtheymusthavebeenhard-working-andgreatplanners!"
36．Visitorsliketogotherein___ toenjoy___onthelongestdayoftheyear．
A．July；sunrise
B．June；sunrise
C．June；sunset
D．July；sunset
37．WhenwasStonehengemostlikelybuilt？___
A.750，000yearsago．
B．Sixcenturiesago．
C.5，000yearsago．
D．In2001．
38．WhatdomostpeoplethinkwasStonehengebuiltfor？___
A．Ancientleadersbuiltitatempletocommunicatewiththegods．
B．Itmightbeakindofcalendartotellpeopl