专题限时训练(六)[史地自然型阅读理解](限时：25分钟)(一)InAmerica,VirginiaBeachhasalltheelementsofaclassicseasideresort:brilliantbeaches,alivelyboardwalk,plentyofrestaurantsandnightspots,andamusementridessuretoappealtokids.ManybelieveVirginiaBeachisatitsbestintheoff­season,whenthetownislesscrowdedbuttheweatherisstillmild.Meanwhile,somesafetytipsshouldbefollowed,enjoyingthehappinessandexcitementthebeachoffers.Thenumber1safetytipconcernsoceansafety:payattentiontoflagconditionspostedonthelifeguardstands.Lifeguardspostaredflagtowarnwhentheoceanwaterisdangerous.Takethemseriously!Touristsfromland­lockedregionsareparticularlyeasilyattractedbythemagicofthewaves.However,acalmoceancanbecomeriskywithoutwarning.Makesureyouswimnearalifeguard.Swimmingwithoutlifeguardprotectionisalmostfivetimesasgreatasdrowningatabeachwithlifeguards.Neverswimalone.Manydrowningsinvolvesingleswimmers.Whenyouswimwithsomeoneelse,ifoneofyouhasaproblem,theothermaybeabletogethelp,includingsignalingforassistancefromothers.Don'tfightthecurrent.Thefactsshowthatsome80%ofrescuesbylifeguardsatoceanbeachesarecausedbycurrents.Thesecurrentsareformedbysurfandgravity,becauseoncesurfpusheswateruptheslopeofabeach,gravitypullsitback.Thiscancreateconcentratedriversofwatermovingoffshore.Ifyouarecaughtinaripcurrent,don'tfightitbytryingtoswimdirectlytoshore.Instead,swimparalleltoshoreuntilyoufeelthecurrentrelax,thenswimtoshore.Mostripcurrentsarenarrowandashortswimparalleltoshorewillhelpbringyoutosafety.1.WhencomingtoVirginiaBeach,childrencannotenjoythehappinessof________.A.walkingontheroadmadeofwoodB．joiningthenightspotsC．ridingahorseorapumpercarD．skiinginthesea2.ManypeoplebelievethebesttimetovisitVirginiaBeachmaybe________.A.afterautumnschooltermbeginningB．inthesummervacationC．duringtheChristmasholidayD．inthecoldwinter3.Swimmingintheseayou'dbetternotswim________.A.withafriendB．withinthesightofthelifeguardC．withthecurrentD．asfarasyoulike4.Fromthepassage,wecanknow________.A.oneinfivepersonsswimmingintheseaisdrownedB