With more forests _____being destroyed, huge _____ of good earth _____ washed away each year.

A．are ; number ; is

B．/ ; quantities / are

C．be ; number ; are

D．/ ; quantities ;is

神经根型颈椎病最主要的症状是（）

A.头痛、头晕、头部转动时发作性眩晕

B.上肢麻木、活动不灵

C.颈肩臂疼痛麻木

D.心搏加快，心律失常

E.大小便功能障碍