Question

He can’t ___________ the difference between right and wrong.

A．say

B．speak

C．answer

D．tell

Answer 1

D

试题分析：A.说话B.讲C.回答；句意：他不能分辨出对和错的差异。固定词组tell the difference between A and B“说出A和B的不同之处”。此处tell意为“辨别，判断”。故选D.
点评：say强调说话的内容，后面常用引号将说话的内容写出来；speak强调讲那种语言，作为不及物动词时常用语电话用语中，后习惯接to；answer是回答的意思；talk常构成talk about sth谈论某事 talk with sb与某人交谈。