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李牧

    李牧者，赵之北边良将也。常居代雁门，备匈奴。以便宜置吏，市租皆输入莫府，为士卒费。日击数牛飨士，习射骑，谨烽火，多间谍，厚遇战士。为约曰：“匈奴即入盗，急入收保，有敢捕虏者斩。”匈奴每入，烽火谨，辄入收保，不敢战。如是数岁，亦不亡失。然匈奴以李牧为怯，虽赵边兵亦以为吾将怯。赵王让李牧，李牧如故。赵王怒，召之，使他人代将。

    岁余，匈奴每来，出战。出战，数不利，失亡多边不得田畜复请李牧。牧杜门不出，固称疾。赵王乃复强起使将兵。牧曰：“王必用臣，臣如前，乃敢奉令。”王许之。

    李牧至，如故约。匈奴数岁无所得。终以为怯。边士日得赏赐而不用，皆愿一战。于是乃具选车得千三百乘，选骑得万三千匹，百金之士五万人，彀者十万人，悉勒习战。大纵畜牧，人民满野。匈奴小入，佯北不胜，以数千人委之。单于闻之，大率众来入。李牧多为奇阵，张左右翼击之，大破杀匈奴十余万骑。灭襜褴，破东胡，降林胡，单于奔走。其后十余岁，匈奴不敢近赵边城。

（选自《史记廉颇蔺相如列传》）

读古诗《元日》，先解释词语的意思，然后解释诗句：

 爆竹声中一岁除，春风送暖入屠苏。

除：____  入：____

全句解释：____

阅读短文，选择正确答案
   In most parts of the world, many students help their schools make less pollution（污染）. They join “environment（环境）club”. In an environment club, people work together to make our environment clean.
   Here are some things students often do.
   No-garbage（垃圾）lunches. How much do you throw away after lunch? Environment clubs ask students to bring their lunches in bags that can be used again. Every week they will choose the classes that make the least garbage and report them to the whole school.
    No-car day. On a no-car day, nobody comes to school in a car not the students and not the teachers. Cars give pollution to our air, so remember: walk, jump, bike, or run! Use your legs! It's lots of fun!
   Turn off the water! Did you know that toilets（抽水马桶）can waste twenty to forty tons（吨）of water an hour? In a year, that would fill in a small river! In the environment clubs, students mend those broken toilets.
   We love our environment. Let's work together to make it clean.