3.According to the passage, what might be a barrier to marriage in 2050 ?
                    举一反三
- According to the passage, what might be the visitor’s reaction A: Confused. B: Annoyed. C: Amused. D: Embarrassed.
 - What is quite important in marriage according to this story?
 - What might be the best title of the passage?
 - According to the video, what is not the reason that causes college students to have a speaking barrier?
 - According to the passage, which of the following things might students sometimes have?
 
