A ship can contain only fifty persons. Now there is alreadyforty-nine persons in it. At this time,a pregnant woman comes on andboards the ship. The shipsinks.Why?(有一艘船只能容納50人，現(xiàn)在已有49人。這時一位孕婦上了船，船就沉了。為什么？)
Because is a pigbot. (那是潛水艇。pigbot，潛水艇)
Because is a pigbot. (那是潛水艇。pigbot，潛水艇)