[音频]With the development of computer-technology, computers are becoming 1) _______ popular all over the world. The computer is being used in many 2) ______. In industry, business, education, 3) _________, nearly all walks of life, computers have made their 4) __________, providing great speed and accuracy for our work. Computers have been used in the home, offices, laboratories and research 5) __________, acting as the most 6) _________ and multifunctional instruments for calculating, sorting, filing, recording and 7) _________. And they have also become a 8) _________ through which we can 9) _________ the world better. During the past fifty years, the computer has been rapidly 10) _________. Ever since the computer came into being has 11) __________ the development of several 12) __________. The earliest computers were of great size, and had no 13) ________ for the latest electronic computers in speed and accuracy. Now, 14) ________ are being made not only to bring the hardware to perfection, but also to 15) _________ the quality of the software.