单选题 Mr. Brown wrote the words down to ______ . [A] let guests know where he had gone. [B] remind his son of his words. [C] let her wife know what he taught their son.

【正确答案】 B

【答案解析】[精解] 题干的意思是Brown先生把话写下来为了什么。A的意思是让客人知道他去哪里了，B的意思是提醒儿子他说的话，C的意思是让他太太知道他教儿子什么了。文中的相关细节为“But he was afraid his son couldn't remember this，he wrote these words down on a piece of paper and gave it to him．”，即但是他担心儿子忘掉了，就把这些话写在一张纸上给他。因此是为了提醒儿子如果有人找他该如何回答，只有B符合文意。