单项选择题

What is the ratio of the perimeter of a pentagon with each side of length 6 to the perimeter of an octagon with each side of length 6（）

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

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单项选择题

If the perimeter of a triangle is 18，then the length of one of the sides CANNOT be（）

A. 1
B. 3
C. 6
D. 8
E. 9

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