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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中
數線概念 急
Jun 27th 2013, 04:10

1.在一數線上有五點P.Q.R.S.T 所表示的數分別是-4.-12.15.-8.5 則原點必在哪兩點之間?

(A)P與Q
(B)Q與S
(C)R與T
(D)P與T

2.在一數線上有五點 A.B.C.D.E 所表示的數分別是-4.2.3.-1.-3 則原點介於哪兩點之間?

(A)A與D
(B)B與C
(C)B與D
(D)D與E

3.在一數線上有五點 A.B.C.D.E 所表示的數分別是-5.-13.15.-7.3 則原點介於哪兩點之間?

(A)A與B
(B)B與D
(C)C與E
(D)A與E

4.下列敘述何者錯誤?

(A)數線上圓點所代表的數最小
(B)任何樹都可在數線上找到對應的點
(C)在1與2之間有無限多個點
(D)數線上代表3.3333的點只有一點

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