单项选择题

The "Mathematics" exhibit area of the museum was first made for______.

A．the World’s Fair in New York in 1964
B．the Olympic Games in Los Angeles in 1984
C．the World Economical and Environmental Conference in 2008
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单项选择题
Where is everything that is in the library listed
A．In solar system.
B．In the computer system.
C．In the public address system.
单项选择题
The first electronic computers were ______.
A．slow and reliable
B．large and fast
C．creative and accurate
D．unreliable and small
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