Direction: Read the passage carefully and answer the question that follows.

In the field of industry and agriculture, the service of science cannot be forgotten. If it had not invented tractors, industrial machines and new ways of production, a good portion of our increasing population would have died due to a shortage of food and preventive clothes against beating cold and heat. Here science looks like the saviour of mankind.

Science has given us life-saving drugs. It is due to science that serious operations are possible. These are X-rays that help us know the interior parts of the body. Many fatal diseases, which were considered incurable, now can be easily cured. Now people don't die of malaria, plague and TB. We have overcome these diseases with the help of science. In short, we can say that science has given eyes to the blind, ears to the deaf and legs to the lame.

On one hand, we have life-serving drugs and test-tube babies while on the other hand, we have the devastating atom bomb. One symbolizes life and the other the doom. Hence there is a need of the hour to think over its needs and prospects for the 21st century. The risks of war have become so great that the continued existence of our species either has become or soon will become incompatible with the new methods of scientific destruction. In this age of science, we have forgotten charity and tolerance and forbearance, which are the base of humanity. We have become so engrossed in material things that we have ceased to think about non-material matters.

One thing we must keep in our mind that science is a boon when it acts as a servant but a bane when it becomes our master. We must not let science act like our master.