Mr. Liu is a ____. He works in Bao'an People's Hospital. His house is ____ from the hospital. So he goes to work by ____.He is ____. He helps lots of sick people. He likes his ____.
下列离子方程式书写正确的是（ ）
一位身患老年痴呆症的年迈父亲，抓起聚会餐桌上的饺子就装进自己的口袋，嘴里呐呐自语：“我儿子喜欢吃饺子”。“他忘了自己是谁，却没忘记爱自己的儿子。”这体现了（ ）
①父母的爱是伟大而无私的 ②亲情源于血缘，血缘凝就亲情
③不要让父母的等待成为遗憾 ④孝敬父母是中华民族的传统美德
