美语听力 English Cafe 302（在线收听）

　　Topics: Famous Americans: Thomas Edison; Liberia; symposium versus workshop versus seminar; to account for; “Let us never negotiate out of fear, but let us never fear to negotiate.”
　　Words:
　　inventor
　　prodigious
　　practical
　　phonograph
　　patent
　　entrepreneur
　　telegraph
　　wizard
　　perspiration
　　to repatriate
　　to colonize
　　elite
　　symposium
　　workshop
　　seminar
　　to account for
　　to negotiate