29-33单选题29.A:HowlongdoestheflightstopoveraGuangzhou?B:_______________________.选项:a、20milesawayb、from11:50to12:50c、at11:50d、2daysago30.I____thatIcouldnotmakeherchangehermind.a、perceivedb、receivedc、dec

　　29-33单选题

　　29.A:HowlongdoestheflightstopoveraGuangzhou?

　　B:_______________________.

　　选项:

　　a、20milesaway

　　b、from11:50to12:50

　　c、at11:50

　　d、2daysago

　　30.I____thatIcouldnotmakeherchangehermind.

　　a、perceived

　　b、received

　　c、deceived

　　d、relieved

　　31.ShallI____thechairs?

　　a、drift

　　b、leave

　　c、foster

　　d、shift

　　32.Thewindhas____down.

　　a、fallen

　　b、sunk

　　c、flown

　　d、gone

　　33.EachIndiantribe(部落)hadadifferentlanguage.ManyIndiansneverlearnedanylanguageexcepttheirown.DoyouknowhowIndiansfromdifferenttribestalkedtoeachother?Theyhadtwowaystotalkwithoutsound.Onewaywasbysignlanguage;andanotherwaywasbysignals.Signlanguageisawayoftalkingbyusingsigns.Indiansusedsignlanguagewhentheymetstrangers.Inthisway,theycouldfindoutwhetherthestrangerwasafriendoranenemy.InIndiansignlanguage,singsweremadewiththehands.Onesignmeant"man".Anothermeant"horse".Totellthetimeofthedaywhensomethinghappened,anIndianpointedtothesky.Heshowedwherethesunhadbeenatthetime.

　　Indiansusuallyusedsignalswhentheywantedtosendmessagestosomeonefaraway.Tomakesignals,anIndianmightuseahorse.Hemightuseablanket.Orhemightusesmoke,amirrororfirearrows.

　　Tosignalthathehadseenmanyanimals,anIndianrodehishorseinalargecircle.SometimestheIndiansgaveasignallikethisandthenwentawaytohide.Thismeantthattherewasdanger.

　　Theblanketsignalwasvisiblefromfaraway.AnIndianbegantowavetheblanketfromsidetosideinfrontofhim.AnIndiancouldsendmanydifferentsignalswithhisblanket.

　　Hecouldalsosendmanysignalswithamirror.Heusuallyusedthemirrortowarnsomeoneofdanger.Orhetriedtogettheattentionofapersonfaraway.Buthealsousedittosendmessageincode(密码).Ofcourse,mirrorscouldbeusedonlywhenthesunwasshining.Atnight,Indiansusedfirearrowsforsignaling.

　　AnIndianalsosentsignalswithsmoke.Hemadeasmallfireofdrywood.Thenheputgrassorgreenbranchesonit.Heheldablanketo