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　　Mobile phone has become a problem for middle schools．Some middle schools in Australia have banned(禁止)students from carrying mobile phones during school hours．

　　Mobile phone use among children has become a problem for the school this year．Several children have got mobile phones as Christmas gifts．Teachers said mobile phone use is a distraction(分散注意力的事)to students during school hours and it also gives teachers so much trouble in their classrooms．Teachers were also saying that sometimes students might use phone messages to cheat during exams．

　　She said some schools had tried to ban mobile phones．Some parents felt unhappy because they couldn't get in touch with(与……联系)their children．

　　Many teachers said students should not have mobile phones at school, but if there was a good reason, they could leave their phones at school office．They also said there were many reasons why the students should not have mobile phones at school：the mobile phones were easy to lose and were a distraction from studies．

　　Many people say that they understand why parents would want their children to have phones, but they think schools should let the students know when they can use their mobile phones．

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　　Linda Evans was my best friend－like the sister I never had．We did everything together：piano lessons, movies, swimming, horseback riding．

　　When I was 13, my friend moved away．Linda and I kept in touch through letters, and we saw each other on special tine－like my wedding and Linda's．Soon we were busy with children and moving to new homes, and we wrote less often．One day a card that I sent came back, stamped“Address Unknown”．I had no idea how to find Linda．

　　Over the years, I missed Linda very much．I wanted to share stories of my children and then grandchildren．And I need to share my sadness when my brother and then my mother died．There was an empty place in my heart that only a friend like Linda could fill．

　　One day I was reading a newspaper when I noticed a photo of a young woman who looked a lot like Linda and whose last name was Wagman－Linda's married name．“There must be thousands of Wagmans,”I thought, but I still wrote to her．

　　She called as soon as she got my letter．Mrs Tobin! she said excitedly, Linda Evans Wagman is my mother．”

　　Minutes later I heard a voice that I knew very much, even after 40 years, laughed and cried and caught up on each other's lives．Now the empty place in my heart is filled, and there's one thing that Linda and I know for sure：we won't lose each other again!

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