阅读短文，从方框中选择适当的单词填空 （每词限用一次）。

    Nowadays, mobile phones are very popular. They are playing an importantin our life. We can use them to read news, send messages, make phone calls and read all kinds of books. Besides, we can use them tomusic, do some shopping and play games. In a word, mobile phones have made our life more. However, they also bring us many problems. For example, if people use themriding, they may have traffic accidents. If we spend a lot of time the mobile phones, it may affect our study. What's more, they're bad for our eyes and necks. In my opinion, we shouldn't spend lots of time on them and we should use them properly.