A:1.8
B:2.4
C:3.2
D:3.6
观察右图漫画《文明交往的距离》,针对漫画中某学校的做法,你的观点是( )
I think the scene of the movie is beautiful .what about you? .Which answer isn't right?
一容积为350mL的瓶内盛有0.30kg的水,一只口渴的乌鸦为喝到水,衔石子投入瓶中,当投入20块石子后,水面恰好升到瓶口,若每块石子的平均质量为6g,求一块石子的体积和密度.