鲨鱼重3吨,大象比鲨鱼重3吨,鲸鱼比大象重54吨,鲸鱼比鲨鱼重多少吨?'X*n5{2q9Y.Y
算式:提示:U8b8[5e2~3V:r9e5V+M;c6x'X*n5{2q9Y.Y
口答:鲸鱼比鲨鱼重7q8y*B)z,M1A-q1P/E8i,p吨。'X*n5{2q9Y.Y