题目内容：

听下面一段独白，回答以下小题。

1.When did the boy’s mother find that he had a good memory?

A. At the age of 2    B. At the age of 3    C. At the age of 4

2.What grade did the boy directly go to in primary school?

A. Grade 6    B. Grade 5    C. Grade 4

3.When did the boy go to middle school?

A. In 2007    B. In 2008    C. In 2013

4.What does the boy’s mother think of him?

A. He is different from others

B. He is very intelligent

C. He is hard-working