There have been many technological developments in the 20th century. Cho

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问题 There have been many technological developments in the 20th century.
Choose one of them, describe the changes it has brought about and discuss whether all the changes are positive.

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答案 The last century featured many technological revolutions the world over. Among them, computer technology has been the most remarkable. Its rapid development and proliferation of use have changed everything from the way the work is done to cutting-edge scientific research.
First of all, computers free us from heavy workload. With the advent of word processors, mistakes in articles can be corrected and editing done without the need to rewrite or retype the entire paper. It is also possible to generate large, stylised type for headings and illustrations so that books can be prepared ready for print.
The computer has also brought about great changes in the financial and scientific world. A good case in point is the use of computers in banking. With its help, financial institutions are able to keep track of balances and transactions automatically and more efficiently than they did in the past. In the scientific community, one of its advantages is its "number-crunching" power. This has made accurate weather forecasting possible. Its power has also enabled scientists to get a clearer picture of the human genome.
However, not all the changes have had a positive impact on human beings and as a whole. There are quite serious health consequences of a sedentary life in front of a computer, the most obvious being eye strain. Furthermore, it is the social consequences that are more alarming. The computer and the Internet have made direct human contact less and less necessary, which had led to human relationships becoming less close and more confusing.
Although some undesirable consequences have arisen from using computer, on the whole, I feel we should embrace the technological advance. There is every reason to believe that computers represent even more efficiency and effectiveness in the future.

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