11.A ship can contain only fifty persons. Now there is alreadyforty-nine person in it. At this time,a pregnant woman comes on andboards the ship. The shipsinks. Why? (有一艘船只能容纳50人，现在已有49人。这时一位孕妇上了船，船就沉了。为什么？)
答案：Because is a pigboat. (那是潜水艇。pigboat，潜水艇)
12.What's the poorest bank in the world? (世界的最贫穷的银行是什么？)
答案：The river bank。(河岸)
13.What month do soldiers hate?(军人憎恨什么月？)
答案：March。(行军)
14.What goes on four legs in the morning，on two at noon，and on three
in the evening？(什么走路开始用四条腿，后来用两条腿，最后用三条腿？)
答案：People.They crawled when they were babies and walked with two legs before they had to rely on a crutch in old age. (是人，他们刚生下来的时候用四肢爬行，后来用双腿走路，老年时又不得不依靠拐杖走。)
15.What do we get if we cross a woodpecker with a homing pigeon？(把一只啄木鸟和一只识途的鸽子融合在一起，会得到什么？)
答案：A bird that knocks on the door when delivering messages(将得到一只送信时会敲门的鸟)