题干
—How can I get some ___________ about the sports meeting?
—Why not search the Internet?
A：experence
B：practice
C：information
D：success
答案(点此获取答案解析）
C
沿垂直于电场方向射入平行板之间，则带电粒子在电场区域内运动的轨迹是(设负极板B固定不动，带电粒子始终不与极板相碰)（ ） 
