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。
Since the 1970s, with the worsening oil crisis, the major businesses in the automotive internal combustion engine as much as possible to reduce the car's fuel consumption, while sparing no effort in the development of hybrid vehicles and new energy vehicles. There are hybrid gas-electric hybrid and mixed fuel in two forms, both in the car body design is no different with the traditional internal combustion engine vehicles, the future trend is nothing more than a continuation of current trends, efforts to reduce the drag coefficient, reducing weight while increasing strength and stiffness and so on.
Hybrid vehicle technology only in the product over, to really new energy vehicles, preparatory and experimental products, the ultimate trend or completely replace the existing traditional energy vehicles by the new energy vehicles.
What appearance is prospective car?You do not know!That le,it is like train of magnetism in suspension in sky travel.There is a guide in the car -- satellitic navigation system.The glass of the car can prevent ultraviolet ray,make the person\'s eye is not harmed.The car is to rely on to compress the reactive force that air releases to fill the car,rely on another compression again air is in a rear eduction,the car runs quickly to ahead like jet aircraft.Car rate of future is very rapid,one hour can run hundreds of kilometers,even thousands of kilometer.You let it open way of how many kilometer,want to say to the car only,the car can bade by yours go doing.Prospective car has a lot of advanced places:There is same thing in the car,can control the steering wheel of the car.
You should say where to go to only,it can take you automatically where to go to.It can operate steering wheel,need not you worry about.Reached that place,the car can stop automatically,next,can give out automatically \" toot toots \" sound,remind you to had arrived stood.Car shell of future is very beautiful.Whole car is yellow.But,you look carefully,there can be one to above discovery the horizontal line of multicoloured,match very equably.There is a thing in the car,can make the car has invisible effect.How!Prospective car is magical!Believe you like very much certainly!
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!
In 2080, cars are going to be different. The car of new type is made from China. The motor is quicker than other cars. The car can be droved 500 kilometers per hour.
Computers are going to be inside every car. It is going to control the car. You don’t need to be worried about the red light.
The car is going to go on special tracks above the city. It would be not so crowded and noisy.
There is a special air conditioner in the car. In winter you can be warm there. In summer you can be pleasantly cool.
If you have this car, you will be very fashionable.
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