单项选择题

（）

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 it is impossible to determine which quantity is greater

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单项选择题

What is the area of a circle whose radius is the diagonal of a square whose area is 4（）

A．2π
B．2π
C．4π
D．8π
E． 16π

单项选择题

Last year Leo bought two paintings. This year he sold them for $2000 each. On one, he made a 25% profit, and on the other he had a 25% loss. What was his net loss or profit

A．He broke even.
B．He lost less than $100.
C．He lost more than $100.
D．He earned less than $100.
E． He earned more than $100.