good to use smartphones while studying? 答:I disagree that it is good to use smartphones while studying. I have two reasons to support this opinion. To begin with, there is a lot of false information. It is difficult for people to choose right one. Also, there are a lot of contents that disturb their concentration. For example, communication apps, Youtube, Instagram. In addition, using a smartphone for too long is bad for our eyes.We should pay more attention to our eyes. For these reasons, I believe that it is bad to use smartphones while studying. よろしくお願いします。