either of neither of

（ ） of the two books holds the opinion that the danger of nuclear war is increasing.

A either
B neither

答案：B

A为什么不行。。
它给出的解释是：谓语动词holds是第三人称单数，括号里应填否定。。

我的点萌了～问一下

either of 与either异同 either of 与 both of either of 与either 的区别 either of, both of 用法怎样区分？ both of 和either of的区别 either of 和 neither of 是什么意思? Either of them isn't rigrt. Either bank of the river什么意思 Either of **和 neither of **是单数还是复数？ each side of 和 either side of 的区别