with thE rApiD sprEAD oF thE intErnEt EvEry- whErE in thE worlD, thE (31) numBEr oF usErs, onE oF thE most ExCiting DEvElopmEnts on thE intErnEt isE-CommErCE— (32) CommErCE.E-CommErCE hAs two Forms, (33) BusinEss- to-BusinEss, orB-to-B, AnD BusinEss-to-ConsumEr, orB-to-
C、B-to-
C、wAs thE First oF thEsE DEvElopmEnts. it grEw (34) From thE First DAys whEn pEoplE stArtED to Buy things in thEir homEs without going to A shop. First CAmE “CAtAloguE shopping” (35) you ChoosE whAt you wAnt From A CAtAloguE (36) piCturEs AnD othEr DEtAils oF EvErything thAt is (37) sAlE. you thEn sEnD An orDEr with A ChECk By post AnD thE things you hAvE ChosEn (38) to your homE. thEn (39) “tElEvision shopping”, whErE (40) A CAtAloguE, thE itEms For sAlE ArE shown or (41) on tElEvision. (42) , thE CustomEr sEnDs A ChECk AnD thE itEm is DElivErED to his or hEr homE. onlinE shopping is thE (43) DEvElopmEnt, whErE thE “CAtAloguE” is (44) on thE intEr- nEt, ComBining thE ADvAntAgEs oF Both thE Book CAtAloguE AnD thE tElEvision AnD inDEED ADDing morE (45) . thE CustomEr (46) his ChoiCE But rAthEr thAn sEnDing An orDEr AnD A (47) through thE post, hE plACEs thE orDEr AnD pAys For it using his CrEDit CArD, All using (48) .
mAny pEoplE worry ABout giving DEtAils oF thEir CrEDit CArD ovEr thE intErnEt AnD thE DAngEr thAt it mAy BE DECEitFully usED、 (49) , thE gEnErAl viEw is thAt with moDEm systEms oF sECurE EnCoDing thE DAngErs oF thE misusE oF CrEDit CArDs is (50) grEAtEr in A shop, gArAgE or rEstAurAnt thAn using it For shopping on thE intErnEt.
A．liABlE
B．oBtAinABlE
C、rEliABlE
D．AvAilABlE