Internet is one of the greatest inventions of20th century , which covers almost everycover of the world.It provides people withso much information and meanwhile makespeople So close to each other . However ,italso has some negative sides which shouldnot be ignored.On the other hard, the Internet has usheredin a new area of information age. Peoplecan get all kinds of useful informationwithout virtually leaving theirroom. Scientists and researchers can keep uswith the latest development in theirfield , thusing their knowledge andimproving their work.On the otherhand , the Internet also bring usmanyproblems.Firstly , as people become So close to eachother , privacy seems to disappear . Althoughmuch has been done to upgrade securitysystem,the success still seems far ahead ofus . Secondly ,а lot of useless information