课堂测验* classroom exam (cf pop-quiz 流动资金* circulating fund (cf. working capital) 拳头产品* fist product (cf knockout product(outstandingly impressive product) 新闻自由* freedom of news (cf. freedom of press) 买一赠一* Buy one, present one (cf. Buy one, get one free. 课堂测验*classroom exam  (cf.pop-quiz)  流动资金*circulating fund  (cf. working capital)  拳头产品*fist product  (cf. knockout product)(outstandingly impressive product)  新闻自由*freedom of news  (cf. freedom of press)  买一赠一* Buy one, present one.  (cf. Buy one, get one free.)