【单选题】Nowhereinnatureisaluminumfoundfree，owingtoitsalwayswithotherelements，mostcommonlywithoxygen.（）
A.beingcombined
B.havingcombined
C.tocombine
D.combined
A.beingcombined
B.havingcombined
C.tocombine
D.combined
【单选题】
Why did the man settle on renting the full-size car
A、It was roomy enough for him.
B、It was more economical than the minivan.
C、It had more features than the other vehicles.
D、It was well-equipped than the economy car.
Why did the man settle on renting the full-size car
A、It was roomy enough for him.
B、It was more economical than the minivan.
C、It had more features than the other vehicles.
D、It was well-equipped than the economy car.
【单选题】thE DiAmonD is ConsiDErED thE most FAmous AnD vAluABlE jEwEl in thE worlD、
A、DiAmonD is A (31) oF wEAlth.
DiAmonDs wErE mADE (32) grEAt volCAniC hEAt AnD prEssurE.
A、volCAno is A mountAin with A holE on thE top.
A、volCAno CAn BE vEry DAngErous BECAusE (33) it is ACtivE it somEtimEs (34) AnD CAusEs grEAt DAmAgE.
DiAmonDs wErE (35) towArDs thE surFACE oF thE EArth—millions oF yEArs Ago By (36) grEAt volCAniC Explosions. it is in thE nArrow volCAniC pipEs (37) DiAmonDs ArE FounD, thEy ArE Also FounD Among thE sAnD AnD stonEs oF CErtAin rivEr (38) , AnD in A FEw plACEs on thE Floor oF thE sE
A、For thEy wErE wAshED (39) thE mountAin siDEs By thE rAin.
DiAmonDs ArE vEry (40) . thErE ArE not mAny DiAmonD pipEs or DiAmonD-proDuCing rivErs in thE (41) .During thE lAst CEntury ADvEnturErs FromEuropE wEnt toBrAzil, BECAusE thEy hAD hEArD (42) thErE wErE DiAmonDs in thE rivErAmAzon. mAny oF thEsE EArly DiAmonD (43) DiED oF illnEss or (44) lost ForEvEr in thE grEAt ForEsts.But somE rEturnED homE (45) . thEy wErE luCky Enough to (46) thEir livEs.
thE EArliEst known DiAmonDs wErE FounD in inDiA mAny (47) Ago. thE most rECEnt AnD (48) DisCovEriEs hAvE BEEn mADE in EAstErn russi
A、 (49) most oF thE worlD’s DiAmonDs now ComE FromCongo, From tAnzAniA— (50) hAs thE lArgEst DiAmonD minE in thE worlD AnD From southAFriC
A、
A、whAt B、thAtC、whErED、whEn
A、DiAmonD is A (31) oF wEAlth.
DiAmonDs wErE mADE (32) grEAt volCAniC hEAt AnD prEssurE.
A、volCAno is A mountAin with A holE on thE top.
A、volCAno CAn BE vEry DAngErous BECAusE (33) it is ACtivE it somEtimEs (34) AnD CAusEs grEAt DAmAgE.
DiAmonDs wErE (35) towArDs thE surFACE oF thE EArth—millions oF yEArs Ago By (36) grEAt volCAniC Explosions. it is in thE nArrow volCAniC pipEs (37) DiAmonDs ArE FounD, thEy ArE Also FounD Among thE sAnD AnD stonEs oF CErtAin rivEr (38) , AnD in A FEw plACEs on thE Floor oF thE sE
A、For thEy wErE wAshED (39) thE mountAin siDEs By thE rAin.
DiAmonDs ArE vEry (40) . thErE ArE not mAny DiAmonD pipEs or DiAmonD-proDuCing rivErs in thE (41) .During thE lAst CEntury ADvEnturErs FromEuropE wEnt toBrAzil, BECAusE thEy hAD hEArD (42) thErE wErE DiAmonDs in thE rivErAmAzon. mAny oF thEsE EArly DiAmonD (43) DiED oF illnEss or (44) lost ForEvEr in thE grEAt ForEsts.But somE rEturnED homE (45) . thEy wErE luCky Enough to (46) thEir livEs.
thE EArliEst known DiAmonDs wErE FounD in inDiA mAny (47) Ago. thE most rECEnt AnD (48) DisCovEriEs hAvE BEEn mADE in EAstErn russi
A、 (49) most oF thE worlD’s DiAmonDs now ComE FromCongo, From tAnzAniA— (50) hAs thE lArgEst DiAmonD minE in thE worlD AnD From southAFriC
A、
A、whAt B、thAtC、whErED、whEn
【单选题】whAt is our prEsEnt situAtion likE
A．likE wAr, rEvolution AnD DEprEssion.
B．likE nAturAl DisAstEr.
C．ContinuAtion oF our prEsEnt stAtE.
D．A stAtE whErE long-rAngE plAnning is EssEntiAl.
A．likE wAr, rEvolution AnD DEprEssion.
B．likE nAturAl DisAstEr.
C．ContinuAtion oF our prEsEnt stAtE.
D．A stAtE whErE long-rAngE plAnning is EssEntiAl.
【单选题】
A．inCrEAsED
B．impliED
C．improvED
D．imprEssED
A．inCrEAsED
B．impliED
C．improvED
D．imprEssED
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