我们生活的地球正遭受着严重的空气污染。工厂排放的废气、燃烧的垃圾、汽车的尾气等都是污染大气的祸源。它们时刻侵袭着我们的呼吸道和肺,使呼吸系统的发病率逐年上升。
当空气轻微污染时,人体吸入的空气可以由鼻腔里的鼻毛除去部分灰尘,再由鼻腔里的黏液和各类支气管里的黏液将灰尘粘连住。气管和支气管内的纤毛有几千万根,它们每秒约摆动12次,像“清洁工”一样从下向上推扫呼吸道里的黏液,直至咽喉部,再通过咳嗽咳出体外。
当空气严重污染时,呼吸道的净化作用将降低,甚至完全丧失。在这种情况下,呼吸道和肺易受病菌的侵袭而患各种疾病。
由于种种原因,空气污染还在加剧。如果不能解决空气污染的问题,恐怕真有一天,人类只能带着口罩生活。
What our life will be like in the future?When I was a little boy,I always asked myself this question.At that time,I had no idea what Internet was.But now,we use it every day.We can't live without it.Internet is become so popular and so convenient.
Just forget it.What our life will be like in the future?For example,in ten years.I think that in ten years our life will be much more colorful,our computer will be much powerful,and we can do almost everything on the internet including seeing a doctor.What about your future life ?Will you share with me?
我家门前有一条清澈见底的小河,里面有好多小鱼,小虾,水草,河水不深,夏天可以去河里游泳,洗衣服,孩子们可以打水仗,周围有好多房子倒映在水中,十分美丽,使人看了就舒服。
以前我住在这里时,每天都快快乐乐的,有这条河水陪伴我,多么舒服啊!
几年之后,这里的小鱼不见了,水草了,小虾也已经不见了踪影。河水开始渐渐变得浑浊,也有了几分臭味。因此,人们开始讨厌这条河,渐渐离它远去了。河对岸的老奶奶,整天叹着气,说:‘‘哎,高楼倒是建起来了,可这小河却变得脏兮兮的,现在的社会啊!”
我们科学研究小组通过考察,发现在小河附近有家工厂,工厂每天排放了很多污水。倒置小河变脏。我们与那座工厂的老板反复商量了好多次,老板终于决定买一个污水处理器,然后,我们在小河边的土壤上插上这样一块木牌:保护小河,人人有责!
我相信,有了这些措施后,那条小河将会和以前一样清澈,那样美丽,自然。以前不见踪影的小鱼小虾都回来了,夏天有可以游泳了,水草又活过来了,这条小河又可以陪伴着我。让我每天都十分快乐。
一个暑假,我回到老家去看望爷爷奶奶,去看望爷爷奶奶的路上要经过一座桥,下面有一条溪流。来到桥上,我往下一看感到特别惊讶:怎么这么脏?河面上躺满了各种各样的脏物,羽毛球、篮球、塑料袋、可乐罐、废纸……
我想以前我到这儿看到的小河是非常干净而且非常美丽的。特别是到了春天,河水清澈,柳树发芽,柳枝倒挂,随风摇摆真是好看。草地绿了,小花开放了,其它的树木也苏醒过来,出现了一片勃勃的生机,那景色特别迷人。
可是眼前这小河已经被人们弄脏了。小鱼也看不见了。我想小鱼一定是被这脏水毒了。即使没有被毒的,也一定向别处逃了。它们在逃跑的时候看来应该撑一把伞,避免让人用脏物砸住,而被砸伤。我又想再这样下去,这小河一定会更加脏的。我想我们小朋友一定都喜欢干净的小河吧!总不想看到脏的小河吧!如果我们都爱护以及保护小河和周围的环境的`话那么我们就会有干净清洁的小河和环境。鱼儿也喜欢干净的河呀!
心动不如行动,那就让我们赶快行动起来吧!我们可以去扫地,捡垃圾,给花儿浇水……这样的话用不了几年,甚至几个月,我们的河就会干净起来,就会美丽起来,比原来的学校漂亮好几倍了!在这样美好的环境里,我们能够更加愉快地游戏、活动、学习、生活……
我家对面有一条河,它叫“石井河”。这条河曾经是大家的“水上乐园”,但是现在是一条令人讨厌的臭水沟。
石井河旁边是一座公园。白天,如果你站在石井河岸往下看,你会看到石井河的水污浊、能见度很低,河水呈黑色,垃圾多,水浮莲多,基本上没有鱼虾的影子。晚上,有不少的人来公园散步,但偏偏不喜欢到石井河旁散步,因为石井河会发出一种刺鼻的怪味。
有的居民说从前河里有鱼虾,可以游泳,洗菜、洗衣服,现在变成了污水沟,就连下河洗手都不敢。我听爸爸说:“现在工业越来越发达,石井河边的厂房越来越多,随之产生的工业废水排到了石井河内。还有人们随便把垃圾扔到河里,这样给石井河带来了严重的污染。
只有禁止废水向河内排放,人们不向河内乱扔垃圾。相信石井河能再次变成我们的”水上乐园“。
Sometimes I dream about life in the future. What will it be?
Perhaps some people will go to the moon for a holiday or even live on the moon,and some scientists will build cities under the sea to make people live there. We can have a medical examination or do some shopping without leaving our homes,which makes the life more convenient. Maybe we will also do some shopping and work at home.
And I'm sure there'll be more educational programmes on the radio or TV or by the Intemet or videophones,so perhaps some children won't need to go to school every day. They'll study at home.
In the future,all electric equipment at home is under the con-trol of computers. People can learn about the situation of the house by working on the computer at the office. No people like doing housework. Maybe each family will have a robot. Every day we can tell the robot what to do-shopping,housework and so on. believe the dream will come true some day.
在生活中,我们经常用来喝、用来洗、用来维持生命的东西是什么呢?是水!水原来是清蓝色清蓝色的,可是现在她却换了衣服——污水、污泥的黑衣服。有一天,我做了一个梦,本来是好好的梦,却变成了一场让我听到哭诉的梦。
我梦到了自己来到了一个森林里的一条小河前,“啊!水真蓝!”我说。“是啊,我很蓝吧?”河水姐姐说。“你会说话?”“当然,我是河里的精灵。可是等明天,你一定会对我很失望的。”河水姐姐又说。“为什么?为什么?”“你自己看着吧!”过了一会儿,我看见,树木逐渐减少了,似乎是荒漠的树一样;高楼大厦在树的地方建起;呜呜的工厂排水声一起,污水便排放到了清水中,顿时,整个世界变黑了。
我在梦中望着世界,哭了。“这都是我们害的!!”
我被惊醒了,又望了望,我还在大厅的房间里。“我终于懂了,人类的“不可告人”的秘密。
因为这个梦,我一直在想:人类什么时候可以不污染环境啊!
Children's finally here, it is our holiday, but imagine the children also accompanied by together, everybody is more excited.
Children on this day, white clouds float over the blue sky, the children also have made a hot air balloon, they sit together on yourself a hot-air balloon, extremely happy! Balloon flying high, and finally flew to the sky, the children are in the sky holiday, the children sit on clouds, umpa jump, like a frisky little monkey.
Playing children, suddenly to rain cats and dogs, the children of the balloon has stalled, baiyun sister swept away by the wind, the children fell into despair. Is a time of crisis, a group of dragonflies sister and sister flew caught the children, and the safety of the children to the ground.
On the ground, only butterflies woven into a rainbow "lei", the children wear a wreath, some like a fairy, some like a warrior.
Play tired, the children fell asleep between full of fragrance of flowers.
Children's good play my imagination, to one day be able to live in such a children's day.
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