题目

A Great Way to Teach Children to Take ResponsibilityAs parents, one of the most important things to teach children to take responsibility is to include chores as a part of their daily routine. In order to make a family function smoothly, every member must contribute. Teaching your children to take responsibility at an early age makes it easier for them to shoulder greater responsibilities as they grow older.【1】 If your children leave their crayons lying on the table after drawing, picking up those crayons is not a chore. It is cleaning up a mess they have created. 【2】【3】. For examp肌肉注射青霉素后，青霉素最先进人心脏的 　 A．左心房　 B．右心房　 C．左心室　 D．肺动脉