区别就是open question 开放式问题。

close question 封闭式问题。开放式问题是没有预先想好的答案供选择,自由回答。封闭式问题是预先想好答案,让回答者从中选择。Open:What is your favorite color So I'm asking you what your favorite color is, you could say any color you like.Close:Do you like blue I don't think there are any other answers here other than "Yes" or "No," so those are "closed" questions