全站文章页内部300*250广告位
注：在大纲新增词部分，有一些单词属于带星号(*)的积极词汇(即核心词汇)，这部分词汇在此列出，后面标注“积极词”。
O
o’clock
obedience
obedient *
obese
obesity
obscene
obsession *
occupational
odds *
odo(u)r
offset *
oily
olive
omission
onset
opinionated
opposition
oppress
optic
optimism
oracle
oriental
orientation
ouch
ounce
oust
outdate
outflow
outgoing
outpost
outreach
oval
overhear
overpass
oversee
oversight
overstate
overturn
overwhelm
owl
oxide
责任编辑：小草
