选择题：Because of his ill health, she has been obliged to

题目内容：

Because of his ill health, she has been obliged to ___ her job.( )(本题2.0分)
A、 dismiss
B、 resign
C、 depart
D、 retire

参考答案：

How can you keep the machine ____ when you are awa

How can you keep the machine ____ when you are away?( )(本题2.0分) A、 run B、 to run

In the course of a day students do far more than _____ classes.( )(本题2.0分) A、 at

12. 导致中国民族资产阶级两面性的决定性因素,是它天生的( )(本题2.5分) A、软弱性 B、动摇性 C、妥协性 D、不彻底性

根据均匀性假设，可认为构件的下列各量中的某个量在各点处都相同 A、应力 B、应变 C、材料的弹性常数 D、位移

公文中兼用的表达方式是( )。(本题5.0分) A、议论、描写、说明 B、说明、议论、抒情 C、叙述、议论、说明 D、说明、描写、叙述