行政伦理的主要的和基本的功能体现为（）。
参考答案：行 * * 力的自律机制
不等式2x-5≤0的正整数解为______．
— I called you at nine this morning, but there was no answer.
— Oh, sorry, I ______ with my sister in the shopping center.
A．shop
B．was shopping
C．shopped
D．will shop
