材料一：抗美援朝爆发后，中国人民保卫世界和平反对美国侵略委员会成立。11月4日，***和各民主党派联合发表宣言，“誓以全力拥护全国人民的正义要求，拥护全国人民在志愿基础上为着抗美援朝保家卫国的神圣任务而奋斗。”

材料二：我获得了一个不值得羡慕的名声：我是美国历史上第一个在没有取得胜利的停战协定上签字的司令官。

——“联合国军”总司令克拉克的回忆录《从多瑙河到鸭绿江》

材料三：中朝人民军队在敌机狂轰滥炸、后方供给不足和气候严寒的困难中，英勇作战，粉碎了敌人的进攻。

    Most dictionaries will tell you a number of things about a language. There are three important things. These three things are spelling, pronunciation(发音) and meaning.

    First, a dictionary will tell you the spelling of a word. If you are not sure about the spelling of a word, you can try to find the correct spelling in a dictionary. Words are listed in an alphabetical (字母表的) order —— a, b, c and so on. For example, on a dictionary page the "poor" comes before "poverty" and the word "poverty" comes before the "power".

    The words are always given in alphabetical order. The second thing, a dictionary will tell you the pronunciation. Most dictionaries give phonetic, or sound alphabet. The phonetic alphabet (音标) shows pronunciation. The third thing, a dictionary will tell you the meaning of words. You can look up a word and find out what it means. Many words have more than one meaning, and a good dictionary will tell you all of the word's meanings. For example, in English the common word "get" has over 20 different meanings.