6．指代类
　　(1)What does “it” refers to in Line 2, Paragraph 5?
　　(2)What does “they” satnd for in Line 3, Paragraph 2?
　　(3) What does “their” satnd for in Line 3, Paragraph 2?
　　(4) What does “its” refer to in Line 3, Paragraph 2?

　　应对策略：寻读（scanning），定位相关代词的出处，离它最近且单复数一致的名词即是。注意英语中they既可指代人也可指代物。