一道英语趣味题（要推理哒）~

题目

一道英语趣味题（要推理哒）~
Half the apple pie was missing,but who had eaten it?That was the question mother put.
“ Elaine didn’t take it,” Albert said.
“ And I know Diane didn’t take it,” put in Billy.
“ Billy took it himself,“ said Charles.
“ Diane took it,” said Elaine.
“ Anyway,Albert didn’t take it,” Diane added.
Clearly someone must be lying.
As it so turned out,mother did finally discover four of the five children had,in fact,spoken the truth.Only one of the statements made was a lie.
Which of the five had stolen the apple pie?
（ ）had stolen the apple pie.

答案

这个题目给出的条件中,“ Diane took it,” 和“ Billy took it himself,” 互相矛盾,显然有一个是真,一个是假.分别假设某一个是真,看有无矛盾.简单推出“ Diane took it,” 不止一人说谎.因此 Billy took it himself是真.答案是 Billy.