未知题型
Men have been travelling across and around the equator on wheels, on their feet or in ships foi thousands of years ; but only a few men，with great difficulty and in very recent time，have ev er crossed the ice to the North PolE.
A.
【参考答案】
几千年以来，人们已经通过坐车、坐船或者步行穿过了赤道及其附近地区，但是最近只有少数人千辛万苦地越过寒冰到北极。
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