把边长为1厘米的正方形纸片,按下面的规律拼成长方形。
Bob is weaker than Tim this year. Because he exercise a lot last year.
36的平方根是____ ;16的算术平方根是____ ;-273=____
①﹣32+1﹣(﹣2)3
②(﹣5)2÷2 12 ﹣(﹣1+2 14 )×0.4.