—Do you think most of the people in Beijing can talk with foreigners in English?

—Yes, I think so. ______ the young ______ the old are learning to speak English. [ ]

A. Either…or

B. Neither…nor

C. Between …and

D. Not only … but also

井侵、溢流、井涌、井喷和井喷失控是反映井内液柱压力与地层压力失去平衡后（）所出现的各种现象及事故发展的不同严重程度。

A.井口

B.套管鞋

C.井下

D.钻杆

E.钻铤