20. 12. To our ______, Geoffrey’s illness proved not to be as serious as we had feared. A. anxiety B. relief C. view D. judgment ...

8. 9. On New Year's Eve, New York City holds an outdoor _______ which attracts a crowd of a million or more people. A. incident B. event C. case D. affair ...

18. 1. She's __________ some brilliant scheme to double her income. A. come up with B. gone over for C. come out for D. gone on with ...

11. 7. I am __________ with being criticized by people who know nothing about my work. A. tired out B. worn out C. fed up D. filled out ...

5. 11. The children are ________ in a great deal of outdoor activities. A. occupied B. entered C. dealt D. engaged ...

9. The teacher required that all the assignments _____finished before this weekend. A. would be B. were C. be D. are to ...

16. 将一个带正电的带电体A从无穷远处移到一个不带电的导体B附近，则导体B的电势将： A. 降低。 B. 升高。 C. 不发生变化。 D. 不能准确判断。 ...

12. 一个带正电的粒子，沿电场方向移动，下述说法正确的是： A. 它的电势能一定会增加 B. 它的电势能一定会减少。 C. 它的电势能既不增加也不减少。 D. 如果它带的是负电荷，那么电势能就会减少。 ...

19. 处于平衡状态的一瓶氦气和一瓶氮气的分子数密度相同，分子的平均平动动能也相同，都处于平衡态。以下说法正确的是 A. 它们的温度、压强均不相同 B. 它们的温度相同，但氦气压强大于氮气压强 C. 它们的温度、压强都相同 D. 它们的温度相同，但氦气压强...

20. 两容器内分别盛有氢气和氦气，若它们的温度和质量分别相等，则： A. 两种气体分子的平均平动动能相等 B. 两种气体分子的平均动能相等 C. 两种气体分子的方均根速率相等 D. 两种气体的内能相等 ...