A、B两个实心球，已知VA>VB，mB＜mA，则两者的密度关系为 [ ]
A．ρA＜ρB
B．ρA=ρB
C．ρA>ρB
D．无法确定
答案：D
填表题（每空一分，共6分）
—Miss Broun is very busy, isn’t she?
—So she is. She has________greater responsibilities since she was promoted.
A．taken off
B．taken after
C．taken in
D．taken on
