toDAy, thE worlD wiDE wEB CAn BE usED Both to sEArCh inFormAtion AnD to mAkE it{{u}} (31) {{/u}}to othErs. inFormAtion{{u}} (32) {{/u}}on wEBpAgEs is viEwED By{{u}} (33) {{/u}}oF BrowsEr. thE sourCEs oF inFormAtion linkED in this wAy CAn BE loCAtED on Any ComputEr{{u}} (34) {{/u}}is Also pArt oF thE wEB、EACh inFormAtion sourCE mAy BE linkED to An{{u}} (35) {{/u}}numBEr oF othEr wEBpAgEs. hypErtExt AnD hypErlinks Allow usErs{{u}} (36) {{/u}}As rECEivErs oF inFormAtion to{{u}} (37) {{/u}}From onE sourCE oF inFormAtion to AnothEr, DECiDing For thEmsElvEs whiCh inFormAtion thEy wish to{{u}} (38) {{/u}}to thEir BrowsEr AnD whiCh links thEy wAnt to{{u}} (39) {{/u}}. thE ADDrEssEs oF{{u}} (40) {{/u}}CAn BE FounD By using thE hunDrEDs oF sEArCh EnginEs whiCh proviDE{{u}} (41) {{/u}}to DAtABAsEs whiCh holD inFormAtion on thEm. onCE A wEBpAgE hAs BEEn FounD, hypErlinks mAy point{{u}} (42) {{/u}}othEr plACEs oF intErEst on thE wEB、ADDrEssEs oF wEBpAgEs Also AppEAr in othEr morE{{u}} (43) {{/u}}mEDiA, suCh As mAgAzinEs, nEwspApErs AnD tElEvision progrAms, AnD on postErs. wEBpAgEs, in thEir{{u}} (44) {{/u}}, FACilitAtE ACCEss to inFormAtion mADE AvAilABlE By othEr{{u}} (45) {{/u}}oF mEDiA, For ExAmplE, CollECtions hElD in liBrAriEs. most wEBpAgEs oFFEr intErACtivE opportunitiEs whiCh go{{u}} (46) {{/u}}mErEly Allowing visitors FrEEDom As to whEn AnD how thEy visit A pAgE. {{u}} (47) {{/u}}CAn BE kEpt FormAl viA A quEstionnAirE whiCh CAn BE FillED{{u}} (48) {{/u}}, or inFormAl By proviDing An ADDrEss For EmAil or EvEn By instAlling A DigitAl guEst Book For CommEnts lEFt For othEr usErs to rEAD、{{u}} (49) {{/u}}. All wEBpAgEs ArE protECtED so thAt unAuthorizED visitors CAnnot mAkE unsoliCitED ChAngEs to thEm, it is Also possiBlE to{{u}} (50) {{/u}}ACCEss to pAgEs on thE intErnEt to thosE holDing A pAssworD、

A．spECiFiC
B．inDEFinitE
C．DEFinitE
D．limitED