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    【题目】咸蛋超人住在（20°W，23.5°S），有一天他想拜访住在地球另一端的面包超人，并决定“遁地”前去，于是他从家中钻入地底，始终保持直线前进并穿过地心到面包超人家。请你判断面包超人家的具体位置（　　）
    A.（20°W，23.5°S ）
    B.（ 160°W，23.5°S ）
    C.（160°E，66.5°N ）
    D.（ 160°E，23.5°N ）

    【答案】D
    【解析】对趾点的特点：①关于地心对称；②两者位于不同的东西半球和南北半球上，时差为12小时；③两点纬度相同，但一个是北纬，一个是南纬；经度东西经相对且互补。因此咸蛋超人住在（23.5°S，20°W），在地球上通过地心另一侧的对趾点，面包超人的位置是（23.5°N，160°E）。
    故选：D。

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