－So what have you learned?

－We’ve learnt _______about life in poor areas.

Which of the following is NOT right?

A．a lot

B．a bit

C．a few

D．a little

隧道双向开挖接近贯通面时，两端施工应加强联系与统一指挥，当隧道两个开挖工作面距离接近（）时，必须采取一端掘进另一端停止作业并撤走人员和机具的措施，同时在安全距离处设臵禁止入内的警示标志。