tumble v.①(使)摔倒;②打滚，翻腾;n.摔跤，跌倒
slip[slip] v.①滑，滑倒;②滑落，滑掉;③溜走;n.疏忽，小错，口误，笔误
[真题例句] Step outside and you could break a leg slipping (v.①) on your doormat.[1999年阅读1]
[例句精译] 如果你走出去，可能会滑倒在门垫上，摔伤一条腿。
assiduously ad.勤勉地, 恳切地
exaggerate v.夸大，夸张
[真题例句] Concerns were raised (49：that) witnesses might be encouraged to exaggerate their stories in court to (50：ensure) guilty verdicts.[2001年完形]
[例句精译]人们开始担心：(接受报酬)可能会鼓励证人在法庭上夸大他们经历的事情，以保证(陪审团对被告)作出有罪的判决。
outperform vt.做得比......好,胜过
dwindle v.缩小