单项选择题


There are six marked points on the circle above． How many different lines can be drawn that contain two of the marked points（）

A. 5
B. 6
C. 12
D. 15
E. 30

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单项选择题
The rectangular box shown above has been wrapped with two tapes，each going once around the box without overlap and running parallel to the edges of the box．How many centimeters of tape were used on the box（）

A. 70
B. 80
C. 120
D. 140
E. 150
单项选择题
In the figure above，if x，Ly，and z are integers such that x＜y＜z，then the least and the greatest possible values of x+z are（）

A. 59 and 91
B. 59 and 135
C. 91 and 178
D. 120 and 135
E. 120 and 178
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