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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单项选择题

Three solid cubes of lead，each with edges10 centimeters long，are melted together in a level，rectangular shaped pan．The base of the pan has inside dimensions of 20centimeters by 30 centimeters，and the pan is 15 centimeters deep．If the volume of the solid lead is approximately the same as thev olume of tile melted lead，approximately how many centimeters deep is the melted lead in the pan（）

A. 2.5
B. 3
C. 5
D. 7.5
E. 9

单项选择题

If B is the midpoint of line segment AD and C is the midpoint of line segment BD， what is the value of（）

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

The map shows．the only roads that connect the four towns and shows the distance along each road． （）

The map shows．the only roads that connect the four towns and shows the distance along each road．
（）