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    【题目】从赤道向两极走，纬度会

    A.变小B.变大C.先变大后变小D.不变

    【答案】B

    【解析】

    根据纬线是在地球仪上，顺着东西方向，环绕地球仪一周的圆圈．所有的纬线都相互平行，并与经线垂直，纬线指示东西方向．纬线圈的大小不等，赤道为最大的纬线圈，从赤道向两极纬线圈逐渐缩小，到南、北两极缩小为点，进行分析解答。

    在地球仪上，能画出无数条纬线，为了区分各条纬线，人们给它们标了度数，叫纬度。纬度的变化规律为：以赤道为界，向两极度数逐渐增大到90°。依据题意。故选：B。

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