However, others strongly object to developing private cars. They maintain that as more and more cars are produced and run in the street, a large volume of poisonous gas will be given off, polluting the atmosphere and causing actual harm to the health of people. In fact, private cars contribute to traffic congestion so greatly that the advantages gained in comfort and freedom are often cancelled out by the frustration caused by traffic jams.
In spite of all the above-mentioned, I still favor owning a car. The reason is that the car gives a person the freedom to schedule his own time. Though we are confronted with a problem of energy crisis, I am sure that the real solution will have to be a new kind of car, one that uses cheap, efficient fuel and does not contaminate the air.
5. Scientific Discovery — Curse Or Blessing
New scientific discovery nearly always brings mankind a blessing. Take electricity for example. Since its discovery, it has ushered in an era of countless inventions in close connection with it. Nowadays people can read and write by means of lights instead of candles. Fire is another example of discoveries which made human beings survive in ancient times and generates electricity in modern times. Again, minerals such as oil or coal discovered by man have long been used as fuel to develop industry and agriculture.