【单选题】教师在教学中用不同形式的直观材料或事例来说明事物的本质属性称为( )
【简答题】教师在教学中用不同形式的直观材料或事例来说明事物的本质属性称为( )A. A.变式 B.反例 C.正例 D.比较
【简答题】计算下面各题. 408+540÷18×24 [2.8×(2.8-2.8)]÷2.8 [4-( - )]× ( + ÷ )×
【单选题】4加上5.6除以2.8的商,列式为( )
【简答题】把下列各式写成乘方运算的形式: (1)(- )×(- )×(- )×(- )×(- ); (2)(-3.2)×(-3.2)×(-3.2)×2.8×2.8×2.8×2.8。
【简答题】2×2.8+3.8×2.8=(______○______)○2.8.
【简答题】8×7÷2.8×7=1______.2.8×7÷2.8×7=1______.
【单选题】You hit him because of what he called you. I've had to endure that kind of talk my entire life. You should be able to take it for at least one night.
D.
Far From The Madding Crowd
【简答题】8÷2.5×4=2.8÷(0.25×4)=2.8.______.