假设你叫李华。远在英国的网友Tom想了解你对上网的看法。请根据下表提供的信息，用英语给Tom发一封100个词左右的电子邮件。

Advantages	1．获得更多信息 2．可上网校学习 3．联系更加便捷
Disadvantages	1．聊天、玩游戏费时 2．仍有有害东西
Suggestions	1．善于网上学习 2．时间不宜过长

生词：电子邮件：e-mail 网校：net-school
注：邮件的开头与结尾已给出。
Dear Tom,
I would like to give my opinion about being on the Internet.____________
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Yours,
Li Hua