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Air pollution is one of the most serious problems in the world today. People make the air dirty with machines. Machines produce gases and smoke. Badly polluted air can cause sickness and even death. We want to stop pollution but we think it is a difficult problem to solve.
Most of our pollution is caused by things that people need. Automobiles and airplanes cause pollution. Factories cause air pollution too. But they also provide jobs and products for people. Every day thousands of automobiles and factories can add tons of pollution air. It is dangerous to people's health. It can damage the plants that provide us with food.
Nobody likes air pollution. Scientists and engineers try their best to develop automobiles and factories that produce less pollution. People can work together to persuade businessmen to be more concerned about the problem.
I have many friends.I like to communicate with my friends by using cell phones.I like to make phone calls and send text messages to chat.That is because I love my smartphone very much.I have it with me all the time and it helps me a lot.Henceif someone wants to reach meI can know that at once.MoreoverI enjoy making phone calls.PlusI don't have a laptopand only check emails once a weekso it's inconvenient for me to talk to people through emails.To sum upfor various reasons I like to communicate with my friends by phone.
Todaythe quality of our natural environment has become an important issue.The world population is growing so fastthe world has become too crowded.
We are using up our natural resourcesand polluting our environment with dangerous chemicals.If we continue to do on this earthlife can not survive.
Concerned people have made some progress in environmental protection.Governments of many countries have established laws to protect the airforests and sea resourcesand stop the pollution of the environment.
Still more measures should be taken to solve environmental problems.People should be further educatedto recognize the importance of the problemsto use modern methods of birth controlto protect our natural resources and recycle our products.We believe thatwe can have a bettercleaner place
Nothing can be done except little by little the French poet Baudelaire Charles once said. Most people however often ignore such a truth. So does the little boy shown in the picture. He expresses his worries to his father about disposing of nuclear waste but is told that he can achieve nothing if he doesn't empty the dustbin first.
Every single little thing you can do today matters. The truth has been tested for ages and thousands of great people have set good examples for us. For instance Leonardo da Vinci the world-renowned master in painting starts his career with repeated egg-drawing. Lu Xun the great man of letters reminded himself to get up early by inscribing the character "morning" on his desk.
As university students in my opinion we should aim high but at the same time we shall never measure a task by its size. All in all only those who have the patience to do simple things perfectly will acquire the skill to do difficult things easily.法国诗人Baudelaire Charles曾经说过，除了一点一点也不能做的事。然而，大多数人往往忽视这样的事实。照片上的小男孩也一样。他表示他担心他对处理核废料的父亲，而是告诉他如果他不清空垃圾箱第一一事无成。