一家宠物店的老板在店门口挂了张“出售小狗”的牌子。这招牌通常很能吸引孤童的眼光。不久后,果真有一个小男孩走进店里询问:“要多少钱才能买到小狗?”老板回答:“从30元到50元不等。” A pet shop owner hangs a “sell puppy” sign at the entrance of the store. This sign is usually very attractive to solitary children. Soon afterwards, a little boy really walked into the store and asked: “How much money can I buy a puppy?” “The boss replied: ”From 30 to 50 yuan."