单项选择题

What is the maximum number of nonover-lapping regions into which 3 lines can divide the interior of a circle（）

A. 4
B. 6
C. 7
D. 8
E. 9

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单项选择题
The dimensions，in centimeters，of rectangular box R are 6 by 8 by 10．Which of the following CANNOT be the total surface area，in square centimeters，of two faces of R（）

A. 96
B. 120
C. 128
D. 160
E. 180
单项选择题
If a solid pyramid has 4 vertices and4 faces，how many edges does the pyramid have（）

A. 2
B. 3
C. 4
D. 6
E. 8
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