题目

Alexis was hot and tired. With rage (愤怒) in her voice she shouted,“Pull me up! I give up. I hate this. This is stupid!” It was at that moment when Jason, the adviser on the trip, looked at me and said,“Ed, I'm going to go down and talk with her.”I then shouted down to Alexis,“ Hold on! You can do this. We know you can!” Jason grasped another rope, put this climbing harness (系带) on and began to move down the cliff. Within moments Jason was beside Alexis. She had her cheek directly against the face of the rock with her feet barely resting on a small piece of the cliff that j阅读下列材料，回答问题。材料一 2012年春运自1月8日起至2月16日止，全国铁路预计将发送旅客2．35亿人，同比增加1352万人，增长6．1%，日均发送旅客588万人。材料二 我国人口流动示意图（1）我国目前跨省流动人口比重大，其主要流向是______________。（2）对比说明现阶段我国人口地区间大规模流动的原因_____________。（3）分析A地也能吸引众多人口流入的原因________。（4）图中B地区是人口流出较多的地区，这会对该地区产生什么影响___________？