单项选择题

The expression" a variety of tests" (Line 1, Para. 3) means ______.

A．a large number of different tests
B．a large number of easy tests
C．a large number of similar tests
D．a large number of difficult tests
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单项选择题
To judge a child's standard, his marks in a test must be compared with marks gained by ______.
A．others of the same age
B．older children
C．younger children
D．adults
单项选择题
Binet used large numbers of children in his tests because he wanted to find out ______.
A．who were the brightest
B．who had defects
C．what a bright child could do
D．a standard
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