求一篇英语作文，150字左右：the fight against air pollution.要求：分三部分

In order to seek for increasing economic development of human society,more and more factories has emerged around the world.But if you inspect them carefully and think them over ,you will penetrate their disguise,which seems to have let us make more money and lead a flourish material-life,and get an insight into the fact that not only can many of these factories do harm to our health,but also cause some disastrous consequences of environment like the air pollution all over the world .Usually careless,we now have to get an increasing awareness of the importance of environmental protection and get into the realization of the fact that these factories have bind us to a dangerous circumstance where many regions has been seriously polluted by their endlessly harmful smog.So as we see, from now,for us human being,it's increasingly necessary to take more action to fight against air pollution. The first thing we can do is to close down some of the most dangerous factories directly,letting them out of our sight.However,This action may slow down the pace of development of the regional economy.Therefore,a second step we can take is to modernize some factories which have a great bearing on the regional economy.What's more,we can also move factories out of the region as much as we can to make sure that we can avoid the harmful smog and lead a more healthy life.Finally,we should not forget to plant more trees surrounding the environment where we live as possible as we can. Increasing the economic power at the expense of our environment as well as our health is not desirable.We should take it seriously and learn to keep the balance of the economy and environment.And if we do the job well to the best of our ability,I think people will be much more happy with these measures we take.