【選択問題B)
次の英文を読んで後の問いに答えなさい。
Computers and cell phones are useful for studying, writing to friends, playing games and shopping. However,
important not to spend too much time in front of a computer or a cell phone. It can be bad for your eyes, neck and back.
You should take al' break/every twenty or thirty minutes. Have a snack, but don't have it at your computer or with your
cell phone. Go into the kitchen, or even better, the garden. A short walk, small exercise, and fresh air will make you good.