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                                                                                                        事业篇
                                                                                                              柳斌杰
       自然造物,最美好的莫过于人的生命。然而它来去匆匆，惟其珍贵而短暂,所以在人类进步的历程中,每一代青年,在人生之舟起锚开航之际,总要探索人生永存的秘密。
       把它裹进花前月下的男女柔情之中?把它交给吃喝玩乐的享受?把它关在金钱筑起的象牙塔里?把它置于戒备森严的高楼 深院?古往今来,有多少风华少年,在酒色财气的迷惘中浪费了最宝贵的一生。在前人用生命所写的启示录中,有一个个惊叹号在警告后人:要谨防灵魂的蛀虫、人生的蟊贼。金钱、财产、享乐，都只能是人们生活中的奴仆，一旦让它们变成人生的主宰，那将是最大的不幸。人们不停地探索，终于找到了人生永存的保险柜，这就是伟大的事业。
        事业是人生的常青之树。它植根于人民幸福的土壤中，汇合千千万万的人生，永远生气勃勃，枝繁叶茂。谁的人生与事业不分离，谁就找到了最好的归宿。生命是有限的，而人类进步的事业是永存的。把人生溶进伟大事业的人，它就同事业一样永远年轻，不会消失。
        事业是人生的不朽丰碑。人类的史册告诉我们：凡是留下英名的人，总是创造了永存的事业。孔子、司马迁、鲁迅之所以为千秋万代传诵，是因为他们为民族文化宝库增添了财富；屈原、岳飞、郑成功之所以载入史册，是因为他们为中华民族留下了伟大的爱国精神；李自成、洪秀全、孙中山之所以名垂千古，是因为他们推动了历史的前进；蔡伦、祖冲之、毕升之所以永远为人们纪念，是因为他们贡献了自己的聪明才智，在科学技术领域留下的发明创造，使后人享用不尽。谁做了对人类有益的事业，谁就树了一座人生的不朽丰碑。
       和人类历史上的任何事业相比，共产主义事业是最宏伟的，它将给人类创造彻底的、全面的、永恒的幸福。献身于共产主义事业的人们，英名和业绩将永远留在人民心中。我们为能赶上这样辉煌的时代而自豪。新一代青年，只要把自己的一生献给共产主义，那无疑就是在建造人生永存的金字塔。
       时代的发展总是把我们青年置于新的起跑线上，注目那无垠的空间和广袤的大地，也许你会感到自己的渺小。是的，一个人的力量是有限的，但是伟大的事业需要汇集平凡的劳动。只要胸怀共产主义的伟大理想，脚踏实地为之奋斗，把人生献给你的岗位、你的工作、你的祖国，你的人生就将洋溢着永久的光彩。
                                                                                                                                          （选自《中国青年》1984年第6期）

①金属氧化物一定是碱性氧化物．       ②碱性氧化物一定是金属氧化物．

③酸性氧化物一定是非金属氧化物．    ④非金属氧化物不一定是酸性氧化物．

⑤能电离出H⁺的化合物一定是酸．       ⑥CH₃COOH属于一元酸．

⑦含有氧元素的化合物都是氧化物．    ⑧酸性氧化物不一定能与水化合生成酸．

    Most people know something about the greenhouse effect. Factories send gasses such as carbon dioxide, or CO₂, into the atmosphere, the air around the earth. In the past, this wasn't a problem because trees absorbed the CO₂. But now people in many countries are cutting down billions of trees all around the world. At the same time, factories are sending more CO₂ into the atmosphere. It's difficult to believe, but factories put billions of tons of CO₂ into the atmosphere every year. One ton is over 2000 pounds, so it is a lot of pollution. There is too much CO₂ and there aren't enough trees, so the world is getting warmer. In other words, we have a greenhouse effect. This is terrible for the environment.

    What can we do about this? Firsts we can stop using so much coal and oil. We can learn to use different kinds of energy: the sun, wind, steam from volcanoes，and heat from inside the earth. Second, instead of cutting down trees, we should plant more trees. One tree can absorb ten pounds of carbon dioxide every year.

    The trees are good for the earth's atmosphere and for Guatemala (拉丁美洲国家危地马拉).In small towns and villages in Guatemala, most women are poor and have hard lives. Trees help them in three ways. First, the Connecticut factories pay them to plant the trees. Their pay is com, not money. The com is good for their children. Second, these women know a lot about their environment. They know where to plant when to plant, and what kinds of trees to plant. For example，they plant many fruit trees. The fruit gives them vitamins for their families^, diets. Other trees are good for firewood. In a few years, the women won't spend so much time looking for firewood. Third, all these trees are good for the soil. Now rain can't wash the soil down from the mountains so easily.

    This plan isn't enough to stop the greenhouse effect. However, it's a start. The woman of Guatemala are helping themselves and helping their environment.