【正文】
velopment of technology and population growth, the amount and range of materials used has increased at an alarming rate. However, natural resources are not inexhaustible. Some reserves are already on the brink of exhaustion and there is no hope of replacing them. The widespread water shortage is an example in point. If man continued to squander natural resources with no thought for the future, the whole world would be in a mess.Time is running out. It is up to us to take effective measures before the situation gets out of hand.社會熱點話題(18)GLOBAL SHORTAGE OF FRESH WATERPeople often think that water will never be used up. There is plenty of water, such as rain, water from the rivers and wells. In fact water is rather limited on the earth. With the rapid increase of population and fast development of industries, water is more needed than before. Some big cities in China are facing the problem of water shortage already. What should we do about the water shortage? I think, people should be made aware of the real situation about the water. And certain laws should be made that no water will be polluted. We have to protect the existing water resources and develop new ones. In this way I believe that our cities will not be thirsty for water in the future.社會熱點話題(19)CARS AND AIR POLLUTIONCars have created a lot of serious problems in our world. All the time, they are pumping huge amounts of waste gases into the atmosphere, causing disease and even death.One possible solution is to design and develop clean cars and clean fuels. But it may take decades for the new models to pletely replace the traditional ones.Another solution is to develop modern public transportation systems and restrict the use of private cars. If the price of petrol rises constantly and the public vehicles are efficient and convenient enough, most people will not drive private cars. On the whole, the elimination of air pollution needs the coefforts from the government and the public. This problem will be solved only with the help of science and technology.社會熱點話題(20)PARENTS ARE TOO PERMISSIVE WITH THEIR CHILDREN NOWADAYSThere are countless articles on childcare in magazines and newspapers. With so much unsolicited advice flying about, mum and dad just don’t know what to do any more. In the end, they do nothing at all. So, from early childhood, the kids are in charge and parents’ lives are regulated according to the needs of their offspring. When the little dears develop into teenagers, they take plete control. If the young people are going to have a party, for instance, parents are asked to leave the house. Their presence merely spoils the fun. What else can the poor parents do but obey?But remember: children are hardy creatures and most of them survive the harmful influence of extreme permissiveness, so think about it, you poor parents!8 /