(单选题)

What mother said to the author shows that ______.

A.she believes the author should act as a dog

B.she feels that chat can make the author more popular

C.she agrees with the way the author treats Mr. Lee

D.she thinks the author’s behavior is very impolite

参考答案：D

参考解析：

细节理解题。根据文章第二段倒数第二句“You let that be the last time you ever walk by somebody and not open up your mouth to speak, because even a dog can wag its tail when it passes you on the street”可知，母亲所说的话的意思是：你以后再也不许像刚才那样碰到人的时候闷声不响，即使是街边的小狗，有人来了都懂得摇摇尾巴呀。结合常识和下文作者的表现可推知，作者的母亲认为遇到人不打招呼是不礼貌的。故选D。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语