单项选择题

The crow was finally deceived because__________.

A．it was not afraid of the men in the tower
B．it did not have a number sense
C．it could not distinguish between four and five
D．four men left the tower

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热门试题

单项选择题

Counting is different from number sense in that counting is__________.

A．dependent on simpler mental activity
B．found in animals as well as man
C．farther up the evolutionary scale
D．present in animals on the basis of much evidence

单项选择题

We can conclude from this passage that number sense in animals appears to be__________.

A．restricted to about one dozen species or less
B．akin to a faculty possessed by men in all stages of development
C．present chiefly in winged creatures
D．related directly to preservation or offspring