___around the Water Cube, we were then taken to see the Bird’s Nest for the 2008 Olympic Games.

A．Having shown

B．To be shown

C．Having been shown

D．To show

方程2x（x﹣5）=8（x﹣5）的根是[ ]

A．x=4

B．x₁=5，x₂=4

C．x₁=﹣5，x₂=﹣4

D．x=﹣4