第四部分 单词拼写和短语（共10小题，每小题0.5分，满分5分）
1. Sports, though important, should not ____________（主宰）our school.
2. I’d like to work as a peer ____________ (调解员) in school life, someone who helps students to settle problems that they have with other students .
3. The villagers treated us like heroes, and for a brief instant, I felt all the fear and danger had been w______________.
4. The film opens with a 30-minute sequence of the invasion of Normandy, probably the most violent ______________(图像) of war ever shown in a film.
5. The bombing c ______________ in London lasted until May 1941.
6. 对……感到疲倦的（weary）_________________
7. 为……做出牺牲 ___________________
8. 绕……一圈 ___________________
9. 拥有；占有 ____________________
10. 从竖直到水平 ______________________
的正点电荷，A、B两点在Q的正上方和 Q相距分别为 h和0.25 h，将另一点电荷从 A点由静止释放，运动到B点时速度正好又变为零。若此电荷在A点处的加速度大小为3g/4，静
电力常量为K, 试求：