Read the following passage and write the letter A,B, C, D on your answer sheet to indicate the correct answer to each of the following questions The world’s first computer was made at the University of Pennsylvania in 1946 although computer-like machines had been built in the 19th century. Computers were sold (31)_________for the first time in the 1950s, and a lot of progress has been made since then. Computers now are much smaller and more (32)_____________, and they can be bought much more cheaply. Computers are used in many fields: in business, science, medicine, (33)__________and so on. They can be used to forecast the weather or to control robots which made cars. A lot of difficult (34)________can be done very quickly on a computer. Great numbers of home coputers have been sold recently. People know more about computers than they used to. Computers help us much in our work and they are playing a big part in our lives. Many people believe we can look forward to the day when our (35)____________jobs like cleaning, ironing, decorating will be done by computer-controlled robots.