精选优质文档-倾情为你奉上马克吐温名言It is better to keep your mouth shut and appear stupid than to open it and remove all doubt.宁愿闭口不说话，也不要急于表现自己，就算给人以愚笨的形象也不要紧。All you need is ignorance and confidence ; then success is sure.I. Learn some useful words and do some exercises.1. 1）bet. n 赌博make a bet 打赌 have a bet打赌 win a bet打赌赢了 lose a bet打赌输了accept a bet同意打赌 take up a bet同意打赌Lets _ _ _ _ the result of the election. 让我们就选举结果打个赌吧。2）bet v. 打赌 赌博 bet on
