閱讀短文，完成短文下面的任務。
Should we use smart phones？ We can get many things from a smart phone.We can listen to music，talk to others，watch videos，play games，read books，buy things，book tickets and so on.It always gives us new things.Everyone likes smart phones.Now，students always use their parents' smart phones while they are at home.Some students learn on the phone，some play games on the phone，some watch videos，some listen to music.Some use smart phones too much.
    Do you think the students who use smart phones too much are relaxed（放松的）？A research shows（研究表明） that too much smart phone use in spare time can make people more stressed out（緊張）．
    So what should the students who use smart phones too much do？
    First of all，do sports with your friends or parents after school.
    Secondly，go to bed earlier.Getting the right amount of sleep is very important to our health and studies.
And then，read a paper book.And let yourself get lost in a good story.Research shows that reading can reduce（減輕）stress，keep your brain sharp and can even help you sleep better.Everyone should spend（花費） at least 30 minutes reading every day．
    Finally，use the smart phone to learn only when it's necessary（有必要的）.And remember to give the phone back to your parents after you finish your task.
判斷下面句子的對錯，對的打"√"，錯的打"×"。
（1）We can buy things on smart phones.

√

√

（2）We can't book tickets on smart phones.

×

×

（3）Some students use smart phones too much.

√

√

（4）The students who use smart phones too much are relaxed.

×

×

根據短文的內容在橫線上填一個單詞補全句子。
（5）The author（作者） gives

four

four

suggestions to the students who use smart phones too much.