1.Baleenwhalesswimwiththeirmouthsopenandobtainfoodbyfilteringthecrustaceansandthesmallestfishesfromthewater.
(A)frightening(B)discarding(C)straining
2.TheMayancivilizationflourishedontheYucatanpeninsulaofMexico.
(A)profited(B)gained(C)prospered
3.Apieceofwoodisfloatinginthewater.
(A)driftingalong(B)condensing(C)bunchingtogether
4.Becauseoftheirchemicalstructure,syntheticdyesgenerallyfademoreslowlythannaturalones.
(A)penetrate(B)losecolor(C)darkenfabric