单项选择题

How many categories of intelligence are mentioned in the passage（）

A．One.
B．Two.
C．Three.
D．four.

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单项选择题

Why do most intelligence tests combine all three types of questions in equal numbers（）

A．Because everyone have the same chance in this way.
B．Because the IQ is an average and doesn't say any thing about special abilities.
C．Because they are the only three types of questions that can be used at present.
D．Both A and B.

单项选择题

Which of the following is Not the reason why some people don't do well on the IQ test（）

A．Spending too much time on a single .question.
B．Carelessness.
C．Lack of persistence.
D．Getting the wrong answer.