题目内容：

短文改错

Smart phones had become part of our daily life. No matter who we are, we can see people busy play with their smart phones. Smart phones benefit them. They help us escape the pressure of life and get informations. However, if we spend too much time on them, we won’t have time to contact face to face our friends or family. And our life, study and work will hurt. In my view, we should limit to our using smart phones except for a purpose of learning. Meanwhile, it’s absolute necessary for us to take part in more outdoors activities.