Q20: Why do people participate in the activities of a study circle?Q21: According to the man, how many study circles are there annually in Sweden today?

• 原文多次出现了数字，而题目选项中必定有两题是数字题，因此应该在听的过程中对照选项在数字上作些笔记，这样，问题出来之后就胸有成竹了。