书面表达 Jack和John是同班同学,两人都酷爱电脑,Jack利用电脑努力学习成绩有了很大的提高,而John却整沉溺于游戏,成绩下降,请你结合此现象谈你对中学

Jack and John are classmates. They both like computer very much. After school, Jack always writes articles and looks up useful information in the computer which helps him make rapid progress in study. However John spends most of his spare time in playing games. He even forgets to do his homework. So he does poorly in his study. Is computer good or bad? It depends on how we use it. As a middle school student, playing games too much is a waste of time. And it also does great harm to our health. We should try to learn by computer what we can't learn from school. Only in this way can computers really help us.