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高二英语上学期期中试卷(无答案)试题-2.doc

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英语试卷AHaveyoueverwonderedwhybirdssing?Maybeyouthoughtthattheywerejusthappy.Afterall,youprobablysingwhenyouarehappy.Somescientistsbelievethatbirdsdosingsomeofthetimejustbecausetheyarehappy.However,theysingmostofthetimeforaverydifferentreason.Theirsingingisactuallyawarningtootherbirdstostayoutoftheirterritory.Doyouknowwhata“territory”is?Aterritoryisanareathatananimal,usuallythemale,claims(声称)asitsown.Onlyheandhisfamilyarewelcomethere.Nootherfamiliesofthesamespeciesarewelcome.Yourhouseisyourterritorywhereonlyyourfamilyandfriendsarewelcome.Ifastrangershouldenteryourterritoryandthreatenyou,youmightshout.Probablythiswouldbeenoughtofrightenhimaway.Ifso,youhaveactuallyfrightenedthestrangerawaywithouthavingtofighthim.Abirddoesthesamething.Butheexpectsanoutsideralmostanytime,especiallyatnesting(筑巢)season.Soheisscreamingallthetime,whetherhecanseeanoutsiderornot.Thisscreamingiswhatwecallabird’ssong,anditisusuallyenoughtokeepanoutsideraway.Somescientistsbelievethatmostofthetimebird’ssingingisactually________.A．anexpressionofhappinessB.awayofwarningC.anexpressionofangerD.awayofgreetingWhatisabird’s“territory”？A.Aplacewherefamiliesofotherspeciesarenotaccepted.B.Aplacewhereabirdmayshoutatthetopofitsvoice.C.Anareaforwhichbirdsfightagainsteachother.D.Anareawhichabirdconsiderstobeitsown.Whydobirdskeeponsingingatnestingseason?A.Becausetheywanttoinvitemorefriends.B.Becausetheirsinginghelpsfrightenoutsidersaway.C.Becausetheywanttofindoutsidersaround.D.Becausetheirsinginghelpsgetridoftheirfears.Howdoesthewriterexplainbirds’singing?A.Bycomparingbirdswithhumanbeings.B.Byreportingexperimentresults.C.Bydescribingbirds’dailylife.D.Bytellingabird’sstory.Whatdoestheunderlineword“screaming”mean?A.哭喊声B.令人惊愕的C.尖叫声D.尖叫的BMostofusknowabouttheNobelPrize,especiallytheNobelPeacePrize,butfewofusknowanythingaboutthemanwhosetthemup.HisnamewasAlfredNobel.Hewasagreatscientistandinventorhimself.Besides,hehadabigbusiness.Hisbusinessmaysurpriseyou.Hemadeandsoldexplosives.Hiscompaniesevenmadeandsoldweapons.Isn’tth