Today more digital devices have been constructed. Some of them are accessible to a large percentage of students, like cell phones, MP5 players and electronic dictionaries. It's obvious that it's easy to keep in touch with friends and that they are portable to carry. However, there are some drawbacks using these devices. For example, having receivers in ears for a long time is harmful to people's health. As a result, most schools make principles opposing students to using them in school.

　　现在更多的数码设备已经被制造出来了，其中像手机、MP5和电子词典为大部分学生所拥有。显然和朋友保持联系容易了，而且它们便于携带。但是使用这些产品也有缺点，例如长时间在耳朵里放听筒对健康是有害的。因此大多数学校制定规定反对学生在校使用这些产品。

　　加餐练(一)　完形阅读组合练

　　Ⅰ.完形填空

　　Every Saturday and Sunday morning, my father would throw his bike in the trunk of his car and explore new areas to ride. I was always__1__by this. What satisfaction did his bike provide him? It's__2__a bike, right?

　　That all__3__when I started riding my bike in our garage, which hadn't been touched for nearly three years.I had been annoying my parents to help me__4__a bike for college.

　　Scared but__5__， I decided to try riding it.I mean, wasn't it supposed to be__6__？ Alas, it was not. __7__， I spent five or ten minutes riding around, doing small turns or practicing shifting gears (换挡). Then I practised in the street.The greatest moment of it all is__8__my father was there with me, every step of the way. He ran up and down the street making sure my__9__wasn't due to a negative result. I'll never forget those moments. Who says__10__with your parents end before college?

　　Then, college came. The look on my father's face was __11__ when he showed me how to lock my bike.Over various methods of communication, my father__12__ask："Did you ride your bike today？" __13__， for almost two months, my answer was no.

　　Why? I was hesitant (迟疑的). __14__ was not on my schedule. But then, with a kick of confidence, I__15__my bike in September. All I kept thinking was that my father and mother would be__16__of me! Even if it was doing something as small as riding my bike!

Now, all I want to do is ride my bike！There are__17__no words to describe the rush you get while riding your bike.To __18__myself, I set goals. It feels unbelievable to know that you hit