closed question 和 open question的区别
closed question 和 open question的具体区别是什么?
曾经我以为Yes/No question 是closed question,而所有W/H question都是open question.现在才知道不只有Yes/No question 是closed question,有一些W/H question也是closed question.那倒底closed question 和 open question要怎么区分呢?