Cantreestalk?Yes,butnotinwords.Scientistshavereasontobelievethattreesdocommunicatewitheachother.Notlongago,researcherslearnedsomesurprisingthings.Firstawillowtreeattackedinthewoodsbycaterpillars(毛虫)changedthechemistryofitsleavesandmadetheirtastesoterriblethattheygottiredoftheleavesandstoppedeatingthem.Thenevenmoreastonishing,thetreesentoutaspecialsmell----asignal(信号)causingitsneighborstochangethechemistryoftheirownleavesandmakethemlesstasty.Communication,ofcourse,doesn'tneedtobeinwords.Wecantalktoeachotherbysmiling,raisingourshouldersandmovingourhands.Weknowthatbirdsandanimalsuseawholevocabularyofsongs,soundsandmovements.Beesdancetheirsignals,flyingincertainpatternsthattellotherbeeswheretofindnectar(花蜜)forhoney.Sowhyshouldn'ttreeshavewaysofsendingmessage?31.Itcanbeconcludedfromthepassagethatcaterpillarsdonotfeedonleavesthat______.

30.Thepassagetellsusthat_______.

29.Someparentsfeltunhappybecausetheycouldn't_____duringschoolhours.

28.Somechildrengetmobilephonesfrom______aspresents.

27.Whatdoestheunderlinedword"cheat"meaninChineseinthispassage？

Mobilephonebecomesaproblemforhighschools.Somehigh-schoolstudentsinAustraliaaren'tallowedtocarrymobilephonesduringschoolhours.Mobilephoneusedamongchildrenhasbecomeaproblemfortheschoolyears.SeveralchildrenhavegotmobilephonesasChristmaspresentsfromtheirparents,andmorestudentswillwantthem.MarryBrown,aheadmaster,saidthatmobilephonewasadistraction(分心事)tostudentsduringschoolhoursanditalsogaveteachersmuchtroubleintheirclassrooms.Teacherswerealsosayingthatsometimesstudentsmightusephonemessagestocheatduringexams.Shesaidsomeschoolshadtriedtoban(禁止)mobilephones.Someparentsfeltunhappybecausetheycouldn'tgetintouchwiththeirchildren.Manyteacherssaidstudentsshouldn'thavemobilephonesatschool.Buttherewasagoodreasonthattheycouldleavetheirphonesatschooloffices.Theyalsosaidtheywereeasilylostandwereadistractionforstudies.Manypeoplesaythattheyunderstandwhyparentswouldwanttheirchildrentohavephones,buttheythinkschoolsshouldletthestudentsknowwhentheycanusetheirmobilephones.26.SomehighschoolsinAustraliahavestoppedstudentsfromcarryingmobilephones______.

25.Thepassageisabout_______.

24.Inwhichcountrydopeopleusuallymaketeabags?

23.People______liketodrinkteawithmilkandsugarinit.

22.Whydon'tpeopleoftendrinkteabeforetheygotobedinChina?

Allaroundtheworld,peopledrinktea.Butteadoesn'tmeanthesamethingtoeveryone.Indifferentcountriespeoplehavedifferentideasaboutdrinkingtea.PeopleinChinaliketodrinkteawithnothinginit,andtheyoftenhaveitwiththeirfriendsorbythemselves.Theyhavetwokindsoftea,greenteaandblacktea.Theymaydrinkteaatanytimeofthedayanywhere.Buttheydon'toftendrinkteajustbeforetheygotobed,becauseteamakesthemawake.InEngland,peopleliketodrinkteawithmilkandsugarinit,andtheyoftenhaveitintheafternoonwiththeirfriends.InJapan,peoplealsolikedrinkingteaverymuch.Itisverypopularthere.Theydrinkteaeveryday.TheyhaveitinawaydifferentfromthatinChina.SomeyoungJapanesegirlsaregoodatmakingtea.Theycandoitbeautifully.IntheUSA,peopledrinkteaatbreakfastoraftermeals.Theyusuallyuseteabagstomaketheirtea.Makingteawithteabagsisfasterandeasierthanmakingitwithtealeavesinteapots.21.Chinesepeopleliketodrink_______.

20.IwonderifIcanaskhim__________time.

19.Hewasonlyin_________atthetime.

18.Two__________diedofcoldlastwinter.

17.Tomybigsurprise,it__________thatyoumadeaterriblemistake.