A:in danger
B:dangerous
C:in the danger
D:in danger of
已知直角三角形的两条直角边的长恰好是方程2x2-8x+7=0的两个根,则这个直角三角形的斜边长是____。
16-10=____
— You spend too much time in front of the computer. You'd better away from it.