单项选择题

If corresponding sides of △ABC and△A’B’C’ above are proportional, what is y in terms of x（）

A.A
B.B
C.C
D.D
E.E

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单项选择题

In square PQRS above．T is the midpoint of side RS．If PT=，What is the length of a side of the square（）

A.A
B.B
C.C
D.D
E.E

单项选择题

The point (not shown) with rectangular coordinates (m，n) is above line k．（）

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.