--- Did that book give the information you needed?

--- Yes, but ______, we had to read it almost entirely.

A．for finding it

B．to find it

C．finding it

D．by finding it

现浇钢筋混凝土地下连续墙的主要特点是（）。

A．施工速度快、技术要求高

B．墙面垂直度及平整度好

C．深基础开挖土方量少

D．钢筋与混凝土黏结力强