单项选择题



In the rectangular coordinate system，segment OP is rotated counterclockwisethrough an angle of 90° to position OQ(not shown)．
（）

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 the relationship cannot be determined from the information given.

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单项选择题
The area of the circular region with center O is 16π，and v，w．x，y and z represent the lengths Of the line segments． （）

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 the relationship cannot be determined from the information given.
单项选择题
The map shows．the only roads that connect the four towns and shows the distance along each road． （）

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 the relationship cannot be determined from the information given.
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