第四部分：（共三届，满分35分）
第一节：根据首字母或括号里的中文提示写单词，没空限填一词。（每小题0.5分，共5分）（在答题卷中作答）
76．Shackleton, who ever led his expedition to Antarctica , was one of the most famous (探险家)of his day
77．Our circumstances are so desperate that it is uncertain whether we will ever return （活着的）
78．The danger of what lay ahead of them at first made them feel low and (心灰意冷)
