题干
I know you don’t like _____ music very much. But what do you think of _____ music in the film we saw yesterday?
A：不填; 不填
B：the; the
C：the; 不填
D：不填; the
答案(点此获取答案解析）
D
沿水平方向（与A、B板平行）射入（如图），不计重力。要使此粒子恰能从C处射出电场，则A、B间的电压应为（ ）
