未知题型 四分位差和标准差的计量单位是（ ）。
单项选择题 听力原文：W: You didn't seem very enthusiastic about the play.M: You must be joking. If I had applauded any harder . I'd have broken my hand.What did the man think of the play?A．He thought it was terrible.B．He thought the actors were boring.C．He thought it was a success.D．He thought it was funny.
多项选择题 要了解某地区成年人的就业情况（）。