题干
根据上下文补全对话。
Bob: Hi, Mary.____
Mary: I want to join a sports club.
Bob: Great.____
Mary: Table tennis.
Bob: So you can join the table tennis club.
Mary:____ You're good at writing. You can join the writing club.
Bob:____ But I like to tell stories, too.
Mary: Then you can join two clubs, the writing club and the story-telling club.
Bob: Good.____
答案(点此获取答案解析）
B,D,C,A,E
有最小值？并求出这个最小值和此时以a、b、c值为边的三角形的面积．