单项选择题

According to the graphs, which of the following is the best estimate of the total number of employees in 1990（）

A．75,000
B．62,000
C．57,000
D．50,000
E．48,000

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单项选择题

Directions for Quantitative Comparison Questions: Some of the following questions give you two quantities, one in Column A and one in Column B, Compare the two quantities and choose one of the following answer choices:（）

A．if the quantity in Column A is greater;
B．if the quantity in column B is greater;
C．if the two quantities are equal;
D．if you cannot determine the relationship based on the given information

单项选择题

The passage suggests that the author would be most likely to agree with which of the following statements（）

A．Human dependence on computer technology has never been known to advance the species.
B．Human dependence on computer technology should never be allowed under any circumstances.
C．Human dependence on computer technology is a key component in the advancement of the species.
D．Human dependence on computer technology cannot be accurately measured.
E． Human dependence on computer technology can sometimes have a negative impact on society.