题目

--- I have ______________ footballs than my friend Bob.               A. many.        B. more.        C. three.            D. much. 答案：B8．口算下面各题40×7=20×5=1800÷6=300÷5=500÷5=100×3=360÷6=560÷2=900÷3=10×6=190+90=12×5=14×20=46+54=