Heistheoneyoucanalwaysturntowhenyou'reinafix.Heknowswhenyou'retiredupsetorunwell.Heisthecompanionwhosalwayspleasedtoseeyou.Soundfamiliar?Onlyifyouhaveadog.

 Althoughwe'reusedtotheoldsayingaboutman'sbestfriendtheintimacy(密切)betweenananimalloverandhispetcouldrunfardeeperthanwerealized.Inmanycasestheyareacompanionwevalueevenmorethanourspouse(配偶).Accordingtoastudyabout45 percentofBritishdogownersbelievetheirpelknowswhentheyarehappyandsadandcansensewhentheyaretiredorunwell.Almostathirdofthosequestionedsaytheirdogisamuchbet?terlistenerthantheirspouse.41percentofdogownersbelievetheirpetlove^themmorethanthi'irhumanfriendsand24percentsaytheywouldratherspendqualitytimewiththeirdogthantheirspouse.

 Perhapsthere'sagoodreasonforthat.Unlikemanypeoplepetscanbereliei?onnottotellasecretwhichcouldexplainwhyalmostoneintenofthosesurveyedadmittedtotrustingtheirdogwithasecretthattheywouldnotdaretotelleventheirclosesthumanfriends.

 ChrisLaurencewhoisveterinarydirectoroftheDogsTrustsaid*'Dogsarealwaysresponsive(反应积极的).Ifyouwalkuptoadogandtouchititwillsurelypun.Ifyoutickleyourdogbehindtheearsitwillwag^itstail.Buthumansaren'tquitelikethat.”TVvetEmmaMilnesaid"Thejoyandcompanionshipourdogsbringtoourlivesisunquestionableanditisnowonderthatmanyconsiderthemtobeman'sbestfriend."

1.Thewriterismostprobablyexplaining   .

   A.whyyouneedclosefriends

   B.whyyourdogcankeepasecret

   C.whyyourdogisyourbestfriend

   D.whyyoudon'tlikeyourspouse

2.Wecanknowfromthestudythatabout45percentofBritishdogowners

   A.lovetheirdogmorethantheirspouse

   B.thinktheirdogcansensetheirhappinessandsadness

   C.thinktheirspouselovestheirdogbetter

   D.wouldratherspendqualitytimewiththeirdogthantheirspouse

3.AccordingtoParagraph4 dogownerslovetheirdogsomuchbecause   

   A.theirdogknowshowtopleasethem

   B.theyhavenoclosehumanfriends

   C.theycansharetheirsecretswitht