阅读还原,Theearthisabout4,600millionyearsold.Wehumanshavelivedontheearthforonly35,000years,butduringthisperiodwehavechangedourplanetalotinmanyways.1Allovertheworld,peoplehavecutdownmillionsoftrees,somorea

Question

阅读还原,
The earth is about 4,600 million years old.We humans have lived on the earth for only 35,000 years,but during this period we have changed our planet a lot in many ways.1 All over the world,people have cut down millions of trees,so more and more kinds of animals and plants are disappearing.In big cities,cars and buses have polluted the air.Factories have also polluted the land and the water.2 It is important to the earth.But now air pollution is destroying it and that has made a very big hole in the ozone layer (臭氧层).3 This is very dangerous because it can cause cancer.Carbon dioxide (CO2) in the air has increased a lot.4 it has formed a "blanket" (毛毯) around the each.5 This makes our earth become warmer and warmer.Therefore,this causes the level of the ocean to rise.All these problems are very serious.We must do something to stop our earth from being polluted anymore.A.The heat from the sun can' t escape,so the temperature is risingB.Too much harmful light from the sun passes through it and reaches the earth directlyC.Some things we've done are very good for the earth while some are badD.Around the earth,there’s a special kind of oxygen (O2) called "ozone" (O3).E.It mainly comes from different kinds of burning materials

Answer 1

地球有大约46亿年的寿命,虽然我们人类在此居住的时间只有35000年,但是在这段时期内我们用各种手段将我们的星球改变了许多.在全世界,人们已经砍伐了数百万的树木,越来越多的动植物物种消失.在大城市,汽车和公交车污染了大气,工厂污染了土地和水资源.这些对地球都很重要,但是现在空气污染毁了它并且导致臭氧层出现了一个大洞.这很危险因为它能够致癌.空气中的二氧化碳含量提升了许多,它构成了环绕每个人的一条“毛毯”,这让我们的地球变得越来越热,也导致了海平面的升高.这些问题都非常严重.我们必须做些什么来阻止我们的地球继续被污染.来自太阳的热量不被隔离,温度就会越来越高,太多来自太阳的灼热的阳光直接通过并到达地球.我们失去的一些东西在即将殆尽时才体现出对地球的重要.地球周围,一种特别的氧气被称为“臭氧”,它主要由各种不同的燃料燃烧产生.