增加：在缺词处加一个漏字符号( ∧ )，并在其下面写出该加的词；
删除：把多余的词用斜线( \ )划掉；
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者(从第11处起)不计分。
Self-protection is one of most important skills for us teenagers. But how do we protect themselves? Now let me share my ideas to you.
First, I always obey the traffic rules and I never ran the red light. When the traffic light is red, I won't go as it turns green. I always cross the zebra walk because of it is safe. Second, I often eat the food what is healthy and safe. Eat too much fast food will be harmful to my health. Third, I never meet stranger alone, especially friends whom I make on the Internet.
In short, if we obey the rules and take care of ourselves, we will grow up happy.
