黑暗房间中有4个大小相同的鱼缸，鱼缸中水的高度相同，鱼的种类和大小一样．下列情况下，鱼最先死掉的是（　　）

张籍的《贾客乐》：“金陵向西贾客多，船中生长乐风波。……金多众中为上客，夜夜算缗眠独迟。”姚合《庄居野行》：“客行野田间，比屋皆闭户。借向屋中人，尽去作商贾”。唐人的这些诗句，主要反映了

    These are Cara and Ben. They are twins (双胞胎). They are twelve. This is their bedroom. It's a nice room. There are two beds in the room. The yellow bed is Cara's and that green one is Ben's. The twins have one desk and two chairs. The chairs look the same. Cara's sweater is on his bed. Ben's coat is on his chair. Their clock, books and pencil-boxes are on the desk. Their schoolbags are behind the chairs.

His brother is _______ to join the club.