问答题 Men have been travelling across and around the equator on wheels, on their feet or in ships for thousands of years; but only a few men, with great difficulty and in very recent time, have ever crossed the ice to the North Pole. (Passage 1 )
【正确答案】
【答案解析】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。