03 The Definition of Price Prices determine how resources are to be used.(价格决定多少资源被使用) They are also the means by which products and services that are in limited supply are rationed among buyers.(它们也是有限的产品和服务...
06 Television Television-----the most pervasive（弥漫性的，渗透性的） and persuasive(有说服力的，使人信服的) of modern technologies, marked by rapid change and growth-is moving into a new era, an era of extraordinary（非凡的）...