已知在數線上代表四數a、b、a+b、a-b的點分別為A、B、C、D。若│b│＞│a│＞0,則此四點的關係,下列敘述何者正確?(A)A到B的距離與C到D的距離相等(B)A到C的距離與B到D的距離

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28. 已知在數線上代表四數a、b、a+b、a-b的點分別為A、B、C、D。若│b│＞│a│＞0,則此四點的關係,下列敘述何者正確?
(A)A到B的距離與C到D的距離相等
(B)A到C的距離與B到D的距離相等
(C)B到C的距離與B到原點的距離相等
(D)A到B的距離與D到原點的距離相等

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