2. 外语
  3. On a certain number line, if 3 is a distance of x from y, and 9 is a distance of x from z Quantity A: the distance between y and

On a certain number line, if 3 is a distance of x from y, and 9 is a distance of x from z Quantity A: the distance between y and

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问题 On a certain number line, if 3 is a distance of x from y, and 9 is a distance of x from z
Quantity A: the distance between y and z
Quantity B: 12
选项 A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.
答案D
解析 |x-y|=3，|x-z|=9，但是|y-z|我们无从计算，可能为12，也可能为6，所以选择D。
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