1. There
2. different, quickly polluting
3. method, cut, factories, still
4. continue
In the past,man didn't have to think about the protection of his environment There_ were few people on the earth
゛失‹♥ ➪"雪泪 说: (20:37:15)
Today things are different_.The world has become too crowded.We are using up our natural resources too quickly_ and we are polluting_ our environment at the same time
゛失‹♥ ➪"雪泪 说: (20:42:43)
We use modern fishing machine_ to catch more and more fish.We use bigger and more powerful machines to cut_ down more and more trees.We realize that if rivers are polluted with wastes from factories_,we will die.However,in most countries people still_ put wastes into rivers or into the sea
゛失‹♥ ➪"雪泪 说: (20:44:05)
If we continue_to do this,human life on the earth will not survive
There .dangerous.quickly. protecting. machines, cut. still. continue