[解析]
46.答案:A.细节理解题.根据第二段To their surprise,the land around the village was covered with sand.That made them feel sad.令他们惊讶的是,村子周围的土地被沙子覆盖着,这使他们感到悲伤.可知,伤心是因为"村子周围的土地上覆盖着沙子.",选A.
47.答案:D.推理判断题.根据第三段their friend was moved and decided to do something for their village too.So he offered the money they needed.他们的朋友被感动了,决定为他们的村庄做些事,所以他拿出他们需要的钱.及最后一段With the money,they bought trees and had them planted.他们用这些钱买了树并种下了树.可知,D选项"他们的朋友给李和他的妻子一些钱买树.",选D.
48.答案:C.主旨大意题.根据最后一段When the villagers saw the changes,some started to join Li and his wife in the fight.Then more joined.Years went by.And now larger areas around the village are covered with green trees.当村民们看到了变化,一些人开始加入李和他的妻子的战斗中.然后更多的加入.多年过去了.现在村庄周围更大的地区是绿树覆盖.可知,短文主要讲李和他的妻子与沙子作斗争.选C.
[点评]
本题考查了"人物故事类阅读,判断推理,内容归纳",属于"综合题",做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案是解题的关键。