A:锐角三角形
B:直角三角形
C:钝角三角形
D:以上都不对
38.64÷8的商是无限小数.
参天大树的根部吸收的水,能够达到树冠的顶部,主要的动力来自
My mother called and asked me if I had _______ the birthday gift from her.