题目内容：

    Parents often believe that they have a good relationship with their teenagers. But during the summer vacation in 2011,Joanna and Henry noticed a change in their son: suddenly he seemed to be talking more to his friends than to his parents. “The door to his room is always closed” Joanna said.

Tina and Mark noticed similar changes in their 14­year-­old daughter. “She used to sit with me on the sofa and talk” said Mark. “Now we joke that she does this only when she wants something. Sometimes she wants to be treated(对待) like a little girl and sometimes like a young lady. The problem is finding out which time is which.”

Before age 11, children like to tell their parents what's on their minds. “In fact, parents are first on the list” said Michael Riera the writer of Uncommon Sense for Parents with Teenagers. “This completely changes during the ten years” Riera explained. “They talk to their friends first, then maybe their teachers, and their parents last.”

Parents are the best persons to help their children because they know what's going on in their children’s lives. To break down the wall of silence，parents should create chances to understand what their children want to say, and try to find ways to talk and write to them.And they must give their children a mental(心灵的)break, because children also need freedom.Another thing parents should remember is that to be a friend, not a manager, with their children, is a better way to know them.

1.“The door to his room is always closed” shows that the son ________.

A.is busy with his homework

B.doesn't want to talk to his parents

C.needs some sleep

2.What troubles Tina and Mark most is that their daughter ________.

A.only talks to her best friend

B.asks for too much money

C.talks with them only when she wants something

3.The writer thinks that parents should ________.

A.make their children study harder

B.understand their children

C.ask their children to open the doors

4.What is the passage about?

A.children do not talk much with their parents

B.changes of relationship between parents and children and some tips for children.

C.changes of relationship between parents and children and some tips for parents.