优：
1.A large mount of information you wanna can be found on the Internet by the computor.
2.The computor can store the information you need to store.
3.The computors nowdays are used in almost every espects in our life.
4.The rapid speed of computors make us work more efficiently.
5.The computors offered our a colorful, comfortable, convenient new life since it has been invented.
缺:
1.It is bounded by many mortal factors like electricity.
2.It develops so quickly that many families can't afford it and following the current.
3.It can easily destoried for low-computor-knowledge people to keep it normal.
4.It is said that many youths were effected to neglect their work and study.
5.Actully, the high radiation can make the users unhealthy.