— Did you regret having left your well-paid job?

—Why should I? I _______ as much, but I enjoy my present one more.

A．didn’t earn

B．don’t earn

C．hadn’t earned

D．haven’t earned

《铁路技术管理规程》中直线地段建筑限界规定，距线路中心1400mm时，高度不得超过钢轨顶面（）mm。

A.80

B.60

C.25

D.10