题目

College libraries are designed primarily for research and study．To explain its use, let us choose a research topic and follow the step-by-step procedure of looking up the material for the paper．        Suppose your assignment is to write a paper on a novel called “The Sun Also Rises” by American writer Hemingway．The first step is to go to the main catalog．Many small drawers on the large wooden cabinets are lined up in alphabetical（字母的） order．Each of the drawers contains hundreds of alphabetical ordered cards．These cards are printed references to all material ava阅读下列材料，回答下列问题。材料一：怒江是我国尚待开发的最大的水电能源基地之一。下图为规划中的梯级电站示意图，怒江规划开发河段长742千米，天然落差约1578米。但目前怒江水电开发计划备受争议。材料二：据统计，目前怒江州海拔1500米以下的森林已荡然无存，1500米到2000米之间的植被也破坏严重。有人说：“怒江人民不是在种粮食，而是在种灾难！”⑴ 根据材料分析，怒江水能资源丰富的原因。⑵ 为什么有人说“怒江人民不是在种粮食，而是在种灾难”？这里所说的“灾难”主要有哪些？⑶ 你是否赞同怒江的水电开发计划，说出你的理由。