Many teenagers（青少年）feel that the most important people in their lives are their friends．They believe that their family members，and in particular（尤其是）their parents．don’t know them as well as their friends do．In large families，it is quite often for brothers and sisters to fight with each other and then they can only go to their friends for advice．

    It is very important for teenagers to have one good friend or a circle of friends，Even when they are not with their friends，they usually spend a lot of time talking among themselves on the phone．This communication（交际）is very important in children’s growing up，because friends can discuss something difficult to say to their family members．

    However, parents often try to choose their children’s friends for them．Some parents may even stop their children from meeting their good friends．The question of“choice”is an interesting one．Have you ever thought of the following questions?

   Who choose your friends?

   Do you choose your friends or your friends choose you?

   Have you got a friend your parents don’t like?

   Your answers are welcome．

1．Many teenagers think their _________ know them better than their parents do．

        A．friends                                                     B．parents

       C．brothers and sisters                                     D．family members

2．When teenagers stay alone．the usual way of communication is _________．

       A．to go to their friends                                          B．to talk with their parents

       C．to have discussion with their family by phone       D．to talk with their friends on the phone

3．Which of the following sentences is right according to the passage?

       A．Parents should like everything their children enjoy．

       B．In all families children can choose everything they like．

       C．Parents should try their best to understand their children better．

       D．Teenagers can only go to their friends for help．

4．The sentence“Your answers are welcome”means  _________．

       A．You are welcome to have discussion with us．

       B．We’ve got no idea，so your answers are welcome．

       C．Your answers are always correct．

       D．You can give us all the right answers．

A smile will tell people around you that you are a kind and friendly person. However,many people don’t smile because they think they ugly teeth. For example, one of my classmates, Mile, doesn’t have very nice teeth,so thatis why he seldom opens his mouth.he even says that he has lost cofidence because of his teeth.So it is very important for us to look after our teeth. In fact, a lot of people have this problem.Some people inherit teeth problems from their parents,while others’teeth are damaged because of bad habits,like heavy smoking,eating too much sugar or not brush-ing teeth often.If your teeth are in bad shape, you should see a dentist and ask for help. They can help improve your teeth and tell you how to take care of then.
Smiling can help you to feel more confident and make other people think of you as a more friendly person. If you want to keep healthy,you should not only smile but also laugh. An Indian doctor called Kataria said that young children should laugh about 300 times a day, wile adults should laugh between 7 and 15 times a day. So please take this chance to smile and laugh now!
根据短文内容，选出一个最佳答案填入题前括号内。
【小题1】What has made Mike lose his confidence?
His bad habit.  B. His bad teeth.  C. Not smiling.  D. Eating too much sugar.
【小题2】 Many people don’t smile because    .