A:底面半径的比是1∶3
B:底面直径的比是3∶1
C:底面周长的比是3∶1
D:底面积的比是1∶3
连词成句。
在数学表达式:(1)﹣3<0 (2)3x+5>0 (3)x2﹣6(4)x=﹣2 (5)y≠0 (6)x≥50 中,不等式的个数是( )
猜猜下面说的是哪种小动物。
Its ears are long. Its eyes are small. Its mouth is small. Its tail is short. What is it?
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