按课文内容填空。
①            ，为有源头活水来。   
②纸上得来终觉浅，              。
③_____________，一览众山小。
④海内存知己，___________________。
⑤《陋室铭》一文中描写陋室自然环境优美的句子是：                      ，                     。

①我很yuàn yì____把这半口袋mài zi____驮到磨坊去。

②小马听了老牛的话，lì kè____跑到河边，准备过河。

③tū rán____，一只小松鼠跳下来大叫：“小马，你不yào mìng____啦！”

    Internet is educational . Many people think children should ____to surf the Internet as they wish . In this way ,they can look____ different subjects on different kinds of websites according to their own interest . But in my opinion ,children should always be watched____surfing the internet .

    Many websites have information and pictures that children should not see .There are many things that children don't understand .All of these may have some bad influence on children's ____ Also , it is dangerous to let childern use chat rooms by themselves .Many parents tell their children not to talk to ____on the street , so they should be careful of ____their children talk to on the internet,too . What's ____ sitting in the front of a computer for a long time isn't good for children's eyes , so ____should monitor(监视) the time that children spend on the internet .

    In a word ,children should ____ away from anything that could be bad for them . I ____believe that it is necessary for parents to watch their children when they use internet .

— He has a very sore throat.

词汇。根据首字母或中文提示完成句子， 用括号内所给词的适当形式填空。