逻辑删除记录命令DELETE的<范围>和<条件>子句均缺省时，默认为（）操作。
A、ALL
B、REST
C、NEXT n
D、当前记录
参考答案：D
Most people said that pay was their main________for working.[ ]
A. attention
B. tendency
C. motivation
D. excitement
安全带上各种部件不得任意拆掉，换新绳时要注意加绳套
