更多"Beijing has（）many buses that there "的相关试题:
[单项选择]Success, it is often said, has many fathers--and one of the many fathers of computing, that most successful of industries, was Charles Babbage, a 19th-century British mathematician. Exasperated by errors in the mathematical tables that were widely used as calculation aids at the time, Babbage dreamed of building a mechanical engine that could produce flawless tables automatically. But his attempts to make such a machine in the 1920s failed, and the significance of his work was only rediscovered this century.
Next year, at last, the first set of printed tables should emerge from a calculating "difference engine" built to Babbage’s design. Babbage will have been vindicated. But the realization of his dream will also underscore the extent to which he was a man born ahead of his time.
The effort to prove that Babbage’s designs were logically and practically sound began in 1985, when a team of researchers at the Science Museum in London set out to build a difference engine in time
A. he was very disappointed at the mathematical tables available at the time
B. he wanted to be the first man to invent a computing machine
C. be intended to make the mathematical tables flawless
D. he thought he was doing a significant work
[填空题]How many years has she been married
She has been married （）.
[单项选择]How many pages has Jane read
A. Two-thirds of the book.
B. Half of the book.
C. One-third of the book.
