They became friends again that day. Until then, they __________ to each other for nearly two years.

A．didn’t speak

B．hadn’t spoken

C．haven’t spoken

D．haven’t been speaking

号称‚中国规模最大的休眠期天然火山博物馆‛的是（）.

A.五大连池火山群

B.乔官火山群

C.长白山火山群

D.腾冲火山群