题目

地球上淡水的主体分布体积最大的地区是( ) A．热带雨林区       B．青藏高原地区       C．高山地区         D．寒带地区 答案：DWe showed great pity to the poor old man, for ________ life was hard in the past. A. whom                      B. whose                     C. who                         D. that