A:6πm2
B:5πm2
C:4πm2
D:3πm2
大熊猫的体重为0.135吨.
读作:____吨
下列代数式的值中,一定是正数的是( )
Bob: What do you usually____ (do) on Sunday, Ann?
Ann: I usually____(go) to the library with my sister, Betty. But sometimes my grandfather____(go) with me. He____(like) reading very much.
已知等腰三角形的一个内角是70°,则它的底角为 ____