A:be referred to be bought
B:be referred to being bought
C:referred to be bought
D:referred to being bought
如图表示尿液形成过程中,尿素含量变化的曲线,其中纵轴代表尿素含量的变化,AB段表示( )
6390000省略最高位后面的尾数是6万.(判断对错)
18÷6=____ 3×4= ____ 15÷5=____ 7×7=____
35÷5=____ 2×6=____ 18÷3=____ 5×4=____
24÷4=____ 7×6=____ 24÷6=____ 2×5=____
下列词语中,没有错误字的一组是( )