The novel written by the author ________ best, but five years ago no one could have imagined how great a role he ________ in the literary world.

A．sells; was to play

B．was selling; was playing

C．sold; had played

D．is sold; is playing

关于羊水过少的说法，错误的是（）

A.羊水过少的病因已完全明了

B.妊娠早、中期的羊水过少，多以流产告终

C.羊水过少，严重影响围生儿的预后

D.大部分羊水呈黏稠、混浊、暗绿色

E.若羊水量少于50ml，胎儿窘迫发生率达50％以上