Question

Вставить слова в скобках в нужной форме.. The world’s first electronic computer (1) ________________ (build) at the University of Pennsylvania in 1946, although computer-like machines (2) _____________ (invent) much earlier. Computers (3) ______________ (sell) commercially for the first time in the 1950s, and a lot of progress (4) _______________ (make) since then. Computers are now much smaller and more powerful and they can (5) _____________ (buy) much more cheaply. Computers (6) _______________ (apply) in many fields – in business, science, medicine and education, for example. They can (7) ______________ (use) to forecast the weather or control robots which make cars. The computer’s memory is the place where information (8) ______________ (keep) and calculations (9) ______________ (do). A computer cannot think for itself – it must (10) ________________ (tell) what to do. A lot of difficult calculations can (11) _______________ (do) very quickly on a computer. And computers (12) ______ never ___________ (mistake). Stories (13) ________ sometimes ___________ (hear) about computers paying people too much money or sending them bills for things they didn’t buy. These mistakes (14) ______________ (make) by the programmers – the people who give the computer its instructions. Some years ago a computer-controlled rocket belonging to the USA went out of control and had to (15) _________________ (destroy). The accident (16) _______________ (cause) by a small mistake in one line of the programme. This mistake cost the USA $18 million. Criminals have found out that computer crimes are often a lot easier than robbing banks. Hundreds of millions of dollars (17) _____________ (steal) from American businesses every year by people changing the information in computers. Large numbers of home computers (18) ________________ (sell) recently, especially in the USA and Britain. People know more about computers than they used to, and computers are playing a bigger part in our lives. Progress (19) _________________(make) all the time nowadays. It (20) _______________ (believe) we can look forward to the day when even our household jobs like cleaning (21) ________________ (do) by computer-controlled robots.

Answer 1

1.was built 2.had been invented 3.were sold 4.has been made 5. be bought 6.are applied 7. be used 8.is kept 9.are done 10.be told 11.be done 12.have been mistaken 13.are heard 14.are made 15.be destroyed 16.was caused 17.are stolen 18.have been sold 19.is being made 20.is believed 21.will be done

Answer 2

The world’s first electronic computer (1) was built at the University of Pennsylvania in 1946, although computer-like machines (2) were invented much earlier. Computers (3) were sold commercially for the first time in the 1950s, and a lot of progress (4) has been made since then. Computers are now much smaller and more powerful, and they can (5) be bought much more cheaply. Computers (6) are applied in many fields – in business, science, medicine, and education, for example. They can (7) be used to forecast the weather or control robots that make cars. The computer’s memory is the place where information (8) is kept and calculations (9) are done. A computer cannot think for itself – it must (10) be told what to do. A lot of difficult calculations can (11) be done very quickly on a computer. And computers (12) never make mistakes. Stories (13) are sometimes heard about computers paying people too much money or sending them bills for things they didn’t buy. These mistakes (14) are made by the programmers – the people who give the computer its instructions. Some years ago, a computer-controlled rocket belonging to the USA went out of control and had to (15) be destroyed. The accident (16) was caused by a small mistake in one line of the program. This mistake cost the USA $18 million. Criminals have found out that computer crimes are often a lot easier than robbing banks. Hundreds of millions of dollars (17) are stolen from American businesses every year by people changing the information in computers. Large numbers of home computers (18) have been sold recently, especially in the USA and Britain. People know more about computers than they used to, and computers are playing a bigger part in our lives. Progress (19) is being made all the time nowadays. It (20) is believed we can look forward to the day when even our household jobs like cleaning (21) will be done by computer-controlled robots.