演讲课：听者为重：an audience-centered approach an audience-centered approach 当众演讲：以听众为中心，让掌声响起来：an audience-centered approach An Audience-Centered Approach a reader-centered approach Public Speaking：An Audience-Centered Approach Moral education: a teacher-centered approach a message-centered approach 商务沟通：以读者为中心的方法．上：a reader-centered approach 商务沟通：以读者为中心的方法．下：a reader-centered approach