生活中，我们每个人都会有对手，然而，很多时候，我们都错误地把对手当成可怕的敌人。是的，对手胜利的狂喜可能会击碎我们无比美好的成功梦，但我们也不能忽略他曾经给予我们的激励和鞭策。拥有对手，生命之花才会更加绚丽多姿。
请以“对手”为话题，写一篇文章。4
要求：（1）文体不限（除诗歌外），题目自拟；
（2）内容充实，思想内容健康，不少于600字；
（3）文中不得出现真实的人名、校名、地名。

在3Fe+2O₂═Fe₃O₄反应中，____ 　份质量的铁跟　____ 　份质量的氧气反应，生成　____ 　份质量的四氧化三铁．

下列各句中，划线的成语使用恰当的两项是（    ）

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

    Once a farmer lost his watch in his barn, in which lots of grain was kept. The watch, ____ was a gift from his father, was very important to him and he was determined to find it.

    After searching the barn for a long time, however, he gave up and asked for help from a group of children who were playing nearby. He promised to give a great reward to ____ found the watch.

    ____ (hear) this, the children hurried inside the barn immediately . ____ searched everywhere but still could not find the watch buried in the grain. The farmer was about to give up ____ a little boy went up to him and asked to be given ____ second chance.

    The farmer looked at him and thought, “Why not? After all, this kid looks honest.”

    So the farmer sent the little boy back into the barn. After a while the little boy came out ____ the watch in his hand! The farmer, ____ (surprise) but happy, asked the boy how he succeeded where the rest had failed.

    The boy replied, “I did nothing but ____ (sit) quietly and listen for the sound of the watch.”

    This shows us that sometimes a peaceful mind can think ____ (well) than an excited one.