【somepractices1.Ifeveragain_____happensanaccidentlikethis,wewillhaveonlyourselvestoblame．A．itB．soC．thereD．that2.Alightwithnomorepowerthan_____byanordinaryelectriclightbulbbecomesintenselystrong】

　　somepractices

　　1.Ifeveragain_____happensanaccidentlikethis,wewillhaveonlyourselvestoblame．

　　A．it

　　B．so

　　C．there

　　D．that

　　

　　2.Alightwithnomorepowerthan_____byanordinaryelectriclightbulbbecomesintenselystrongasitisconcentratedtoapinpointsizedbeam.

　　A．asisproduced

　　B．thatproduced

　　C．whichisproduced

　　D．produced

　　3.Theplayissaidtobeworthseeing.Youmusthaveseenityesterdayevening,_____you?

　　A．didn't

　　B．mustn't

　　C．did

　　D．can't

　　4.Itisdifficultforustoexplainphenomenaofwhichwehavelittleor_____directknowledge.

　　A．notany

　　B．no

　　C．none

　　D．nothing

　　5.Acertainscientisthaddiscoveredthatametalcalleduraniumgaveoffakindofradiations,whichMadameCuriewaslater_____radioactivity.

　　A．calling

　　B．called

　　C．tocall

　　D．tobecalled

　　6.Finallytheysetoffagainandcycledslowlyalongtheroad.“Wearenotasgoodatthisaswe_____”,complainedMary.

　　A．shouldbe

　　B．wouldbe

　　C．willbe

　　D．havebeen

　　7.Theyexplainedthesituationtothestewardwhobroughtoversomewater.Hetoldthemthathe_____ontheroutefortwentyfiveyears.

　　A．works

　　B．worked

　　C．hasbeenworking

　　D．hadbeenworking

　　8.Manywayshavebeenfound_____smallandsimplemachinetoprocesslargeandcomplicatedmachineparts.

　　A．byusing

　　B．touse

　　C．using

　　D．used

　　9.Somepeoplemayhavebeendauntedbythetaskbecauseofthedifficultiesitbrings,butIdonotknowof_____.

　　A．themdoingso

　　B．anyhavingdoneso

　　C．theirdoinglikethat

　　D.anydoingthatway

　　10.Itisillegaltousethisequipmentfor_____firefightingpurposes.Unauthorizeduseismaliciousdestructionofpropertyandispunishablebya＄50,000fine.

　　A．otherthan

　　B．nonebut

　　C．otherwise

　　D．ratherthan

　　正确答案是:

　　cbabc

　　adbba