As a result of floods , huge quantities of good earth_______this year.    [ ]

A. is washing away              

B. is being washed away    

C. one washing away            

D. are being washed away

按摩的手法应做到具有节奏性、平稳性，既缓和又灵活，得心应手，刚柔相济，达到“轻而不浮，重而不滞，转换圆滑”的地步。