单项选择题

In order to store and remember numbers people in earlier times might use all of the following to count with except ______.

A．stones or shells
B．human hands and fingers
C．seeds and beads
D．animals
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单项选择题
The last important idea mentioned in the passage is ______.
A．the invention of the abacus
B．the birth of a good computing machine
C．the idea of Zero
D．the idea of tens or hundreds
单项选择题
Which of the following is a better title for the passage above ______
A．The Birth of Numbers
B．The Idea of Zero
C．The Use of the Abacus
D．Early Computing Ideas and Devices
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