The doctor has devoted most of his time to the patients.
A：look after
B：looking after
C：looks after
D：looked after
①人具有无穷的智慧
②人具有巨大的创造力
③人类能够制造并使用工具进行生产劳动
④人类能够创造满足生存和发展的需要
下列各组数中，不是互为相反意义的量的是（ ）
