IV.Read the text below and mark the letter A, B, C or D on your answer sheet to
decide which answer best fits each space from 1 to 5.
Most people think of computers as very modern inventions, products of our new
technological age. But actually the idea for a computer had been worked out over two
centuries ago by a man (1)_____ Charles Babbage. Babbage was born in 1791 and
grew up to be a brilliant mathematician. He drew up plans for several calculating
machines which he called "engines". But despite the fact that he (2)_____ building
some of these, he never finished any of them. Over the years people have argued (3)
_____ his machines would ever work. Recently, however, the Science Museum in
London has finished building (4) _____ engine based on one of Babbage's designs. (5)
_____ has taken six years to complete and more than four thousand parts have been
specially made.
Whether it works or not, the machine will be on show at a special exhibition in
the Science Museum to remind people of Babbage's work.
21. A. written B. called C. recognized D. known
22. A. started B. wanted C. made D. missed
23. A. until B. though C. whether D. why
24. A. that B. the C. some D. an
25. A. He B. They C. One D. It
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Sinh Học lớp 12
