·rEAD thE ArtiClE BElow ABout monopoly．
·ChoosE thE CorrECt worD to Fill EACh gAp FromA，B．C、or
D、
·For EACh quEstion(21-30)．mArk onE lEttErA，B，C、orD、on yourAnswEr shEEt．
D、vAlign=top wiDth="100%">monopolv is onE points thE pECuliAr{{u}} (21) {{/u}}．whiCh CAn AFFECt thE sAlE AnD purChAsE oF CErtAin CommoDitiEs．in somE mArkEts，thErE mAy BE only onE sEllEr or A {{u}} (22) {{/u}}．oF sEllErs working vEry ClosEly togEthEr to Control priCEs．thE rEsult oF suCh monopolistiC ACtivitv is to Fix priCEs At A lEvEl{{u}} (23) {{/u}}to thE sEllEr，A lEvEl whiCh mAy Bring him ArtiFiCiAlly high proFits．mAny govErnmEnts DislikE this proCEDurE AnD hAvE tAkEn lEgAl ACtions to{{u}} (24) {{/u}}．or hAlt suCh BusinEss ACtivitiEs．in thE u．s．Anti-trust lAws opErAtE to limit CArtEls AnD mErgErs．{{u}} (25) {{/u}}inBritAin thE monopoliEsCommission ExAminEs All spECiAl ArrAngEmEnts AnD mErgErs rEFErrED to thEm By thEBoArD oF trADE．
this typE oF monopoly is not thE only{{u}} (26) {{/u}}，howEvEr．thErE ArE thrEE othEr Forms：stAtE，lEgAl AnD nAturAl．stAtE monopoliEs ArE quitE Common nowADAys，whErE thE{{u}} (27) {{/u}}in A pArtiCulAr Country Control inDustriEs likE stEEl AnD trAnsport or importAnt AnD prEstigious rEvisEs likE nAtionAl AirlinEs．lEgAl monopoliEs ArE rAthEr DiFFErEnt，BECAusE thE lAw pErmits CErtAin inDiviDuAls to{{u}} (28) {{/u}}solEly From thEir spECiAl invEntions，DisCovEriEs or proCEssEs．nE othEr pErson mAy inFringE thEir rights in rEspECt to{{u}} (29) {{/u}}monopoliEs．
FinAlly，nAturAl monopoly{{u}} (30) {{/u}}whErE A nAtion or inDiviDuAl possEssEs most oF A pArtiCulAr minErAl For rEAsons oF gEogrAphy AnD gEology．
A．possiBility
B．AppEArAnCE
C．AuthoritiEs
D、rEAlity