nowadays, we can see some boys and girls who live in a small world of their own. they bury themselves among books and are proud of themselves. they think that it will make them lose their face if they do housework for they often think themselves very noble.
these young people are wrong. in my opinion every student should have a knowledge of housework. after all, they will have a family of their own, and they should do their part in keeping a good home. boys should also learn to do housework, for what will they do if they remain single? though not all boys remain single,yet they will be very helpful in the family if they know some housework. anyhow they will not lose anything, but, on the contrary, they will gain something useful.
for what i said above, we can find some eamples of our fellow-students studying abroad. all young men do housework as girls do. someone would argue that we can employ servants. this is true.however, what shall we do if the servant leaves us and all things are left to ourselves? we just cannot leave our clothes as they are and let worms and ants eat them up. and what can we do it we go and study in a foreign country where servants are out our means to employ? we must work for ourselves. why not start to learn to do housework now or else it will be too late? everyone should learn to do housework. what do you think about my idea, boys and girls?
什么是“温室效应”呢?这是“温室气体”进入大气层,因为它具有隔热和吸热的功能。它在大气层中增多的结果是形成一种无形的玻璃罩,使太阳辐射在地球上的热量无法向外层空间发射,结果是让地球表面变热起来。
为什么会产生“温室效应”?由于人口急剧增长,工业迅速发展,呼吸产生的.二氧化碳,石油等燃烧时产生的二氧化碳越来越多,又由于对森林的砍伐,大量的农田被建成工厂,破坏了植被,减少了将二氧化碳转化为有机物的条件。再加上地表水域的逐渐减少,降水量大大降低,减少了吸收溶解二氧化碳的条件,破坏了生成与转化动态的平衡,就使大气中的二氧化碳含量逐年增加。
“温室效应”的后果又是什么?它可以使海平面上升。这样低地被淹;地表水和地下水盐分增加,影响供水:生态平衡遭到破坏,许多生物物种加速灭绝。
我们怎么样去减少“温室效应”给我们带来的危害?我们在日常生活中,随手关灯,节约用电。出门可以坐公交车或骑自行车,能步行更好,以节约汽油的消耗量,减少二氧化碳的排放量。
从我做起,阻止全球变暖。
秋姑娘一边走一边哼着小曲,当看到小孩子在踢毽子,她那小孩子脾气又上来了,想来一个恶作剧,当孩子们越踢越紧张时,她不慌不忙地吹了一股清凉的秋风,毽子飞了个“十万八千里”落在了草地上。孩子的热劲一点也没了,被她的秋风吹得四散,秋姑娘意识到自己闯了祸,就逃走了。
他来到了麦田,看见麦子还是绿油油的`,心想:这个讨厌的春姑姑,走了就走了,还留下了纪念。秋姑娘越想越可气,她决定来个“大变麦子”,她拿来洒水壶,把雨滴和黄色的颜料搅混了,就洒了出去(就是下雨了)一束束麦子变黄了,可是,旁边的叶子也被他变黄了。农民们一个接着一个来抢收麦子。秋姑娘不知自己做错了什么,以为别人来找她算账了,立刻不见了踪影。
你找去,原来秋姑娘来到了果园,你瞧,她在一棵苹果树下乘凉,乘凉乘够了。她就给苹果讲笑话,你看,她把一个个苹果给逗笑了,苹果们捧腹大笑,笑红了脸,一个个变红了;此时,她想到了自己带了水彩笔,马上拿出紫色,给葡萄谈装浓抹,葡萄们一个个变成了紫色;她又拿出橘色,立刻给橘子染成了橘色……
直到夕阳西下,他想在群片群片的火烧云里,做起了甜美的梦。
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