个体经营户孙甲与杜某是邻居,又是故交,1998年春,孙甲向杜某借了3000元。当时,他说给杜某打个借据,杜某说:“用不着,凭咱哥俩多年的交情,我还信不过你吗?”但孙甲还是执意给杜某出具了“今收到杜某3000元”的收到条一张,硬塞到杜某手中。同年底,杜某儿子突然患急症,需一大笔钱住院治疗,即到孙甲家去索款。谁 The self-employed households Sun Jia and Du Mou are neighbors, it is so late, in the spring of 1998, Sun Miao borrowed 3,000 yuan from Du. At that time, he said to Dumou make a borrowing, Dumou said: “Do not need, with our brother two years of friendship, I still believe you?” But Sun did insist to Dumou issued Dumou to 3,000 yuan "received a piece, hard to Dumin hands. At the end of the same year, Dumou sudden son suffering from acute illness, need a large sum of money hospitalization, that is, to the Sun family home to claim money. Who