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   问题:

【阅读理解Inmanyhighschoolstherearestrictrulesaboutusingmobilephones.Ifyourphoneringsinclassforexampletheteacherwillbeveryangry.Everymobilephoneha】

问题描述:

(1)

(2)

阅读理解

  Inmanyhighschoolstherearestrictrulesaboutusingmobilephones.Ifyourphoneringsinclassforexampletheteacherwillbeveryangry.

  Everymobilephonehasaringtone(铃声).Ittellsyouthatsomeoneiscallingyou.Nowthereisaringtonecalled“mosquitotone(蚊子铃声)”.Usingitstudentscanreceivecallsandtextmessages(短信)inclassbuttheteacherwillnotrealizewhatishappening.How?

  Mosquitotonehasaspecialsound.Onlychildrenandteenagerscanhearit.Aswegetolderweareunabletohearsomesoundswithhighfrequencies(频率).Asaresultachildorteenagercanhearthemosquitotoneringtonebutit’sinaudibletosomeone20orolder.

  Butsometimespeopleover20canheartheringtone.OneBritishstudent’sphoneusesmosquitotone.Inclassthestudent’sphonerang.The32-year-oldteacherlookedatthestudentandbecameunhappy.“Iheardthat.Youknowtherule:nomobilephoneinclass.”

  Notallthestudentsareinterestedinmosquitotone.JerryJonesahighschoolstudentof17says“Usingmosquitotonetoooftenisbadforourhearing.Imayuseitforpleasurebutnotinclass.It’sunfairtotheteachers!”

  Whatdoparentsthinkofmosquitotone?“Ithinkitisperfectforplaceslikemovietheaters”saysConnieNeeson44.“Thinkaboutit.Yon’rewatchingafilmandsomeone’smobilephonerings.Mosquitotoneisgoodbecausemanypeopledon’thearit.Howeveritalsohasabadinfluenceontheirstudyifstudentsuseitinclass.”

Mosquitotoneworksbecause_________.

[  ]

A.

itisveryloud

B.

ithasnosound

C.

ithasabeautifulsound

D.

ituseshighfrequencies

Th

刘剑平回答:

  答案:1.D;2.B;3.D;4.C;