随着科技的发展，手机拥有了越来越多的功能，人们因此在生活中越来越依赖于手机。但手机在为人们带来便捷的同时也引发了很多问题。请写一篇关于手机使用的文章，阐释手机给人们生活带来的利与弊（各两点），提出你自己对手机使用的看法,并给出合理的建议。词数100-120。

---I decided to travel round Yunnan for a year.   

---_______? You have just started a new job.

A. Come on     B. How come        C. Why not             D. What for

_______ from father to son, the music has not changed for centuries.

A. Passing      B. To pass           C. Having passed            D. Passed

Being a Chinese, I feel proud of my country and the contributions _________have been made to the world culture.

A. that        B. what           C. it           D. one

It was 300 hundred years ago _______ this historic temple was built by a wealthy Mandarin.

A. since                    B. when        C. that            D. before

If you are in trouble , Mike is always willing to _______ a hand .

A. lend         B.  shake           C.  wave       D.  want

—Has Mr.Tom White arrived ? 

 ---- Yes ,already .  ______he wait outside or just come in ?

A. Shall      B. May    C. Could      D. Must 

However difficult you find         to arrange your time, it will pay off in the long run.

A .this                        B. one                          C. it                               D. that

The news came as no surprise to me . I ____ for some time that the factory was going to shut down .

A. knew       B. know        C. have known       D.  had known 

 Not until the train pulled into the station          that his suitcase was gone.

A. had he found     B. did he find   C. he had found    D. he found