胶囊式标签页需要添加（）类
A. nav
B. navbar
C. nav-pills
D. pills
A. class
B. id
C. role
D. data-toggle
listening for gist. Listen to the recording and answer the following questions.What are the speakers talking about ?
A. They are talking about their favorite competition.
B. They are talking about amazing races.
C. They are talking about their running habits.
D. They are talking about rock music.
[音频]What do they think of the topic ?
A. They think the amazing races have both good points and bad points.
B. They think it's bad to have these fierce races.
C. They want to experience theses amzaing races one day.
D. They think these races are unhealthy.
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