4. Would you please compare transportation problems in modern times with those in past?
In the past there were fewer buses,and the road conditions were poor,so it was hard for people to travel. And nowadays, the rate of road constructing has fallen behind.
5. How can the speed of cars be slowed down on highways?
The most effective way to slow down car speed,in my opinion,is to issue a decree that a certain amount of fine should be paid when a driver is speeding. I know that in both Europe and America, drivers pay lots of attention to their driving speed so as not to get a ticket. Besides,the driver who breaks the law three times or more should have his driving license revoked and take some courses on driving.
6. Generally speaking, what kinds of people tend to buy cars?
It is well-known that all kinds of people tend to buy cars,most of whom are businessmen, sports stars, celebrities and high-salaried clerks. It is quite understandable since their high incomes enable them to do so. And we know that sometimes the brand of his car can show a businessman's social status, which is needed on some occasions in order to obtain a certain contact.However, celebrities buy cars to satisfy not only their travel need but also their hobbies, so some of them may own more than one car. Of course, everything is changing. We can see more and more ordinary people are buying cars or planning to buy cars. The reason why more and more common people tend to own cars is that they want to live a more comfortable life,I think.