单项选择题

George Spilich's experiment was conducted in such a way as to ______.

A．compel the subjects to separate major information from minor details
B．put the subjects through increasingly complex tests
C．cheek the effectiveness of nicotine on smokers
D．register the prompt responses of the subjects
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单项选择题
Which of the following statements is NOT true
A．Each community differed in the method of controlling the schools.
B．The salary of the teacher was determined by the local authority.
C．The supervising committee of the school was often composed of church people and some important figures of the town.
D．All communities carried the same principle in organizing these schools.
单项选择题
The purpose of George Spilich's experiments is ______.
A．to test whether smoking has a positive effect on the mental capacity of smokers
B．to show how smoking damages people's mental capacity
C．to prove that smoking affects people's regular performance
D．to find out whether smoking helps people's short-term memory
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