在当今社会,人们生活水平越来越高,科技越来越发达,一些高科技也层出不穷,但是在生活中,有一些发明并不是十全十美,这些例子值得我们深思。
比如,我们生活中最常见的塑料袋,它之所以被誉为20世纪最糟糕的`发明是因为它虽然方便了人们出行,携带东西方便,但是科学家忘记了一点,在塑料袋由慢慢被人们接受到经常使用以后,是否能合理使用并且合理处置用过后的塑料袋。由于它不能被降解,导致环境污染,阻碍植物生长,给农作物带来了严重的减产。
最近,科学家发现了第八个大陆、那是由人们所用过的塑料袋被风吹到海里堆积而成!它们经过海水的慢慢腐蚀,演变成了新大陆!由此看来,并不是所有发明都是十全十美的,但是,为了避免对环境造成更大的伤害,科学家已经开始研制可降解的塑料袋,并且有限制的让人们使用塑料袋,让人们花钱购买塑料袋,提倡使用布包。
再例如,电池是18世纪的杰作,方便了人们储存电,储存电能大,并且能充分利用电,能够安全使用电。但是在当今,电池已经是一个重要污染源了,它如果被扔在地下就会引起大面积土地被污染,导致农作物死亡,造成农民不小的损失。因此,电
池这个发明也不是十全十美的。
所以,为了防止土地被电池所污染,人们开始建回收电池垃圾箱,开始回收利用电池,这是一种保护措施。另一种就是发明代替产品,不用电池也可以储存电,但是目前科学家还没有发明出来能够完全代替电池的产品。所以,未来等着我们去发明。
再比如,现在最新的发明——机器人,它们能帮助人类工作,能比人类工作效率高,既实用又方便,让人们的生活更轻松,减小压力。但是,一旦机器人进入市场,并且大量使用会造成什么后果?会使人类失业率增大,造成人类手工业退化。它是方便了人们生活,但是长期使用机器人会使人类社会慢慢停滞不前,所以,我们要合理的使用机器人,只让它们代替人类做一些对人类来说比较高难的工作,这样会更加加大对机器人的利用率,并且没有导致大批人员失业。
由此看来,当今最先进的发明——机器人,也有它的弊端,科技创新并不是十全十美的、我们在合理使用它们同时也要扬长避短,把科技创新的优点加大,缺点减为最小,使科技创新的利用率加强,逐步使人类社会提高。
同学们,让我们用勤奋的双手,智慧的头脑使自己成为未来科技的主人,努力创造发明,为人类社会做出贡献。
gathering nearly all the well-known chinese original cartoon characters, ne zha, monkey sun and zhu bajie, the top three cartoon characters voted by kids, will lead acting in this dream fairyland and experience an outer space journey by spacecraft named °chang e±. including big-face cat, piggy bear and other nearly 20 characters will be joining this journey. a cartoon olympic game is on schedule as well, and the main difficulty they confront is how to ignite the torch on the pate of giraffe.
this smash show from cctv gathered a top line-up in chinese drama and cartoon field. top producers for screenwriting, choreography, casting, lighting and music devoted their talents here. lead acted by liu xiao ling tong and ma de hua, who are well-known for their excellent performance in tv series °journey to the west±, while notable children programs presiders as ju ping, dong hao, jin guizi and etc also join this sweet play with their specific role. cute characters, fantastic plot will endow kids a memorable hilarious night!
我的缺点之一是写字老是歪七扭八,常常让妈妈说这个字要改,那个字写得不工整,其实我是因为想赶快把手边的功课写完好出去玩,才把功课写得乱七八糟,还自以为是草圣张旭呢,我改过这个缺点的方法是:首先要把书桌清空,不要让会影响我的杂物摆在桌上,开始写功课时必须心平气和的慢慢写,不任心浮气躁找上我,写完功课以后一定要再把功课彻彻底底的检查一遍,才不会出现错误,有了这样的改进,成果似乎慢慢浮现了。
我的缺点之二是每次总是爱跟妈妈顶嘴,只要妈妈讲一件事,我总会连珠炮似的跟妈妈辩驳,我常以我的三吋不烂之舌,把妈妈顶撞的哑口无言,脸上一阵青一阵白,我的成就感油然而生,不过顶撞长辈似乎是件不礼貌的事,可是每每我都会妈妈争得面红耳赤,后来我的解决方法是先冷静慢慢听妈妈把话讲完,再跟妈妈说我的想法,经过几次沟通之后,我们渐渐能了解彼此的想法,也懂得良性沟通。
缺点是全人类如影随形的恶梦,所以我们要尽力把缺点这个噩梦驱逐出境!也愿我们挑战成功!
Bicycle is a convinient means of transporation. It has been very popular in China. During the rush hours, particularly in big cities, you can often see a sea of bicycle riders in the streets. People can ride bicycles to their working places, to schools, to shopping centers and so on. In a word, bicycles play an important role in daily life.
Compared with cars, bicycles have many advantages. Firstly, they are not so expensive as cars and almost every family can afford to buy and repair them. Secondly, riding bicycle is a healthy form of exercise. They do good to our health. Thirdly, bicycles can save energy and does not cause any pollution, while cars will cause serious air pollution, which makes the air in our living place very dirty and makes a lot of people suffer from lung cancer. As we all know, China is a country with a large population. Ifeach family has a car, a large amount of energy would be wasted and air pollution would become more and more serious. Finally, most Chinese people don’ t live far away from where they work or study, it is convenient to ride bicycles. I think that is why bicycles are used so much.
Bicycles are so popular in China that China is often referred to as the kingdom of bicycles. I hope more and more people can ride bicycles in order to make our planet better and cleaner.
自行车是一种方便的交通工具。它在中国非常受欢迎。在高峰期间,尤其是在大城市,你可以经常在街上看到自行车骑手。人们可以骑自行车上班,学校、购物中心等等。总之,自行车在日常生活中起着重要的作用。
与汽车相比,自行车有许多优点。首先,他们不是很昂贵的汽车,几乎家家都能买得起和修理它们。其次,骑自行车是一种健康的运动。他们对我们的健康有益。第三,自行车可以节约能源,不会造成任何污染,而汽车会造成严重的空气污染,使我们生活的地方的空气变得非常脏,使很多人患有肺癌。我们都知道,中国是一个人口众多的国家。如果每个家庭都有一辆汽车,就会浪费掉大量的能源,而且空气污染会越来越严重。最后,大多数中国人不远离他们工作或学习生活,骑自行车很方便。我认为这就是自行车在中国大量使用的原因。
自行车在中国如此受欢迎,中国通常被称为自行车王国。我希望越来越多的`人可以骑自行车为了让我们的地球更好的和更清洁的。
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