灌注桩的孔径检测工具中检孔器其外观尺寸同设计规定，高度一般取孔径的（），用钢筋或型钢制作。

A、3-4倍

B、7-8倍

C、6-8倍

D、4-6倍

—So you missed the meeting.
—______. I got there five minutes before it finished.

A．Not at all
B．Not exactly
C．Not especially
D．Not really