杨绛在其著作《走到人生边上——自问自答》中说“孔子出门必坐车”。孔子的这一行为最能体现儒家思想中的 [ ]
A．礼
B．仁
C．中庸
D．德治
答案：A
________ of plastics， the machines are light in weight.[ ]
A．To make
B．Having made
C．Being made
D．Made
气管切开术
