The soft music sounds ____. We are all listening ____.

A．beautiful; carefully

B．beautifully; carefully

C．moving; careful

D．happily; careful

冒顶区的正常通风一时不能恢复，则必须利用（）向埋压或截堵的人员供给新鲜空气。

A.压风管

B.水管

C.打钻

D.作巷道