完形填空TwentyyearsagokidsinschoolhadneverevenheardoftheInternet.NowI'llbetyoucan'tfinda1personinyourschoolwhohasn't2heardofit.Infactmanyofususeitonaregularbasisandcan

　　完形填空

　　TwentyyearsagokidsinschoolhadneverevenheardoftheInternet.NowI'llbetyoucan'tfinda1personinyourschoolwhohasn't2heardofit.Infactmanyofususeitonaregularbasisandcanevenuseitat3.The"net"inInternetreallystandsfornetwork.Anetworkistwoormorecomputers4togethersothatinformationcanbe5orsentfromonecomputerto6.TheInternetisavast7foralltypesofinformation.Youmayenjoyusingittodo8foraschoolprojectdownloadingyourfavoritesongsor9withfriendsandfamily.Informationcanbefound10webpagesthatcompaniesorganizationsandindividuals(个人)create.It'slikeagiantbulletinboardthatthewholeworlduses!Butsinceanyonecanput11ontheInternetyoualsohavetobecarefulanduseyourbest12andalittlecommonsense.

　　Just13youreadsomethingonapieceofpapersomeoneputsonabulletinboarddoesn'tmeanthatit'sgoodinformationorevencorrectforthatmatter.Youhavetobesurethatwhoeverpostedtheinformationknowswhatthey'retalkingabout14ifyou'redoingresearch!Butwhatifyou'rejuste-mailingpeople?Youstillhavetobevery15ifyou'venevermetthepersonthatyou'recommunicatingwithonline.Youcouldbedoingsomething16!Youshouldnevergiveoutany17informationtosomeoneyoudon'tknownotevenyourname!Andjustlikeyoucan't18theinformationoneverywebsiteoutthere.Youcan't19onwhatstrangersyou"meet"ontheInternettellyoueither.Inthesamewaythatyoucould20thingsaboutyourselftotellsomeoneassomeoneelsecoulddothesametoyou!

　　(1)A．stupid

　　B．single

　　C．common

　　D．clever

　　(2)A．atleast

　　B．atmost

　　C．atlast

　　D．atfirst

　　(3)A．school

　　B．home

　　C．work

　　D．hospital

　　(4)A．met

　　B．communicated

　　C．joined

　　D．connected

　　(5)A．shared

　　B．found

　　C．made

　　D．chosen

　　(6)A．other

　　B．theother

　　C．another

　　D．others

　　(7)A．material

　　B．resource

　　C．source

　　D．matter

　　(8)A．homework

　　B．housework

　　C．research

　　D．experiments

　　(9)A．playing

　　B．talkin