Unit1 When was it invented SectionA习题2.doc

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1、Unit1Whenwasitinvented？SectionA习题2一、句型转换1.Whatdopeopleusethepentodo?(改为被动语态)What_______thepen______todobypeople?2.Theworkersweremadetofinishtheworkatoncebythemanager.(改为主动语态)Themanager_____theworkers_____theworkatonce.3.HeisthemancalledBob.(改为定语从句)Heistheman___________

2、____Bob.4.WeoftenhearLilysingintheroom.(改为被动语态)Lilyisoften________________intheroom.5.WasthemachineinventedbyTom?Shewasn’tsure.(合并为一句)Shewasn’tsurethemachineTom.二、完形填空Manhasinventedfourkindsofsatellites.Thefirstkindofsatellitestudiesthe1oftheearth.Theyareusedtomakemaps

3、.Theyalsohelpcountriestoseewheretheymay2oilorgold.Thesecondkindofsatelliteisusedtoguideshipsandplanes.Ashiporaplanecan3amessagetothesatellite,andthesatellitecanfindout4theshiportheplaneis.Thethirdstudiestheweather.Thesesatellites5cloudsandstrongwindsmovingacrosstheEart

4、h.Theyhelpcountriestomakepreparationswhenvery6weatheriscoming.7kindisusedforcommunication.Telephonecalls8countriescanbesentbythesesatellites.Somecancarryhundredsofcallsatthesametime.Thecallissenttothesatellite,thenthe9sendsittoastationinthecountryandthiscountryisbeingp

5、honed.Thesesatellitesalsocarrypictures;theycanreceiveandsendabouteight10atatime.1.A.physicsB.chemistryC.biologyD.geography2.A.carryB.findC.keepD.choose3.A.writeB.takeC.sendD.bring4.A.whereB.whatC.whichD.that5.A.haveB.watchC.noticeD.see6.A.sunnyB.coolC.badD.fine7.A.Thel

6、astB.AnotherC.OneD.Anyother8.A.amongB.alongC.betweenD.of9.A.TVB.telegraphC.telephoneD.satellite10.A.playsB.programmesC.filmsD.languages