单项选择题

What does the passage mainly discuss

A．Trends in teaching mathematics to children.
B．The use of mathematics in child psychology.
C．The development of mathematical ability in children.
D．The fundamental concepts of mathematics that children must learn.

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单项选择题

The word illuminated in line 10 is closest in meaning to ______.

A．illustrated
B．accepted
C．clarified
D．lighted

单项选择题

It can be inferred from the passage that children normally learn simple counting ______.

A．soon after they learn to talk
B．by looking at the clock
C．when they begin to be mathematically mature
D．after they reach second grade in school