These days ,there are more and more ads everywhere ,we are living in an ad world,so ads give us much influence in our life,as we all know,there are some good and bad in these ads.
For example,ads often give us some new information about new things that we need,we can get something useful from them,so they are sometimes our friends.
But there are aslo some bad,because ads aslo let us hurt,there are often some people say they cheated by some ads, they get very hert.
So,ads have their good and bad,we should know ads more clear so that we can protect us from dengerous.Thus ads are more better to us.