GMAT词汇单词列表

oats obese objection objective oblateness oblique obscure observation observatory obsess obsidian obsolescence obstacle occupation occupational occurrence octagon odd odometer odor off offender offset offshoot offspring olfactory omen omission ongoing onset opaque operagoer opossum opposite optical optimal optimism optimum optometrist orator ordinal ordinance ordinate ore organelle organization orientation oriented origin originality originate originator ornamentation orthodox osmotic ostentation osteoarthritis oust outcome outfit outlaw outlay outlet outline outlying outmoded outnumber outpatient outpost outrage outright outsource outstrip oval overall overcapitalize overcharge overextend overfish overflow overlap overlay overlie overlook overlord overpayment overrun overstock oversupply overt overview overwhelm overwhelming ovulate oxidize ozone