If B is the midpoint of line segment AD and C is the midpoint of line segment BD, what is the value of AB/AC?
E.1/4

A.3/4
B.2/3
C.1/2
D.1/3

【参考答案】

B
解析：若B是线段AD中点，C是线段BD中点，那么AB/AC的值是多少?
解：本题的正确答案为(B)。......

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