- It's one of the things in the world to stay with friends.
- I agree. It always makes us relaxed.
A:worst
B:happiest
C:busiest
D:hardest
如图所示,在水平向右的匀强电场中,在O点固定一电量为Q的正点电荷,a、b、c、d为以O为圆心的同一圆周上的四点,bd连线与匀强电场平行,ac连线与匀强电场垂直.则( )
男生人数占六年级学生总数的____.
女生人数占六年级学生总数的____.