小学六年级英语阅读题 Who Is He?

Who Is He?
Tomson:  Jack, I have a riddle. Can you guess?
Jack:    OK. What’s it?
Tomson:  Please tell me who he is: He is not my brother, and not is my sister, but he is a child of my parents.
Jack:    I don’t know.
Tomson:  Ha-ha, it’s very easy. It’s me.

快速判断：
1.  Tomson has a riddle.                        (    )
2.  Jack understand the difficult.                  (    )
3.  This riddle is very difficult.                   (    )
4.  Jack can’t answer Tomson’s question.           (    )