JavaScript is currently turned off. Turn it on in Settings to view this website.
以下頁面連結至 幽默笑話/腦筋急轉彎/有三個空房間,一間房間有三盞燈,另一個房間有三個開關,每一個開關只能打開一盞燈, 如果你只可以進每個房間一次,那你要如何知道那個開關控制哪盞燈?: