all possible means has been tried,but has any effect.all possible means has been tried,but() has any effect.A.no any one B.neither C.none D.either 应该选哪个答案.为什么啊.
问题描述：
all possible means has been tried,but has any effect.
all possible means has been tried,but() has any effect.
A.no any one B.neither C.none D.either
应该选哪个答案.
为什么啊.
答
C none of the means的省略形式,也就是我们平时所说的none是指（范围内的）一个都没有