问题
单项选择题
A line segment, which is part of a straight line, begins at one point ending at another.
A．and ends
B．ends
C．by ending
D．the end is
答案
参考答案：A
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A line segment, which is part of a straight line, begins at one point ending at another.
A．and ends
B．ends
C．by ending
D．the end is
参考答案：A