171. From what I have mentioned above, we can see clearly that violence on TV has great influence on youngsters’ behavior.
172. There are two reasons for the improvement in people’s living conditions. In the first place, we have been carrying out the reform and opening-up policy. Secondly, there has been a rapid expansion of our national economy. Furthermore, the birth rate has been put under control.
173. My suggestions to deal with the problem are as follows. To begin with, it is urgent to create nature reserves. Secondly, certain rare wild animals that are going to be extinct should be collected, fed and reproduced artificially. Finally, those who hunter them must be punished severely.
174. People differ in their attitudes towards failure. Faced with it, some of them can stand up to it, draw useful lessons from it and try hard to fulfill what they are determined to do. Others, however, lose heart and give in.
175. It is desirable to build more hospitals, shopping centers, recreation centers, cinemas and other public facilities to meet the growing needs of people.
176. As a popular saying goes, "everything has two sides." Now the public are benefiting more and more from scientific and technological inventions. On the other hand, the progress of science and technology is bringing us a lot of trouble. People in many countries are suffering from public hazards.
177. Let’s take cars for example. They not only pollute the air in cities, but make them crowded. Furthermore, they are responsible for a lot of traffic accidents. The noise made by cars disturbs the residents living on both sides of streets all day and night.
178. It is generally believed that the chief reason for the increase in population in developed countries is not so much the rise in birth rates as the decline in death rates as a result of the improvement in medical care.
179. There is no doubt that the increase in demand caused the rise in prices.
180. Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements-themselves made relatively easy nowadays by modern means of transport.