上海市中学生开展的研究性学习，对中学生的创新精神和实践能力的发展起了积极作用．在学习过程中，学生兴味盎然．下面列出了学生的二个研究课题名称：
课题一：上海地区降雨酸度的调查研究．
课题二：上海地区太阳能利用的可行性研究．
请从上述二个课题中任选一个作为你的课题，并回答如下问题：
（1）写出所选课题名称，并简要陈述选题理由．
（2）简要列出你的研究工作计划与研究方法．该课题最终的成果形式是什么？
（1）名称和理由
课题名称：上海地区降雨酸度的调查研究
选题理由：了解上海地区随着工业废气的治理与城市绿化状况的发展同降雨酸度的变化的关系．
（2）计划与方法：
计划：①确定调查内容进而实施调查（采用问卷调查、资料查询、实地观察等方法）．
②设计实验方案进行测试．
③数据分析，撰写报告．
方法：①调查法（如：去环保部门查阅环境检测年报等资料，收集有关资料）．
②实测法（如：选点对降雨酸度进行实验测量，并与过去几年加以比较）．（3）成果形成：
调查报告或论文．
It was the second day of a winter holiday in Queenstown, New Zealand, three years ago. When we decided to explore the beautiful scenery, our landlady 36 us,“Make sure you are well wrapped up today. The weather is 37 . Head back when you see snowfall.” The day was bright and sunny, and I started to wonder if she was being too cautious. When snow began to fall at 6:00 pm, I was not worried, thinking we’d have no 38 in catching a taxi back. However, we waited for a while, and all the drivers shook their heads when told of our 39 . The first driver passed by and gave me a card with a number for me to 40 help. I was filled with 41 , but I had no choice but to lead my three sisters to a nearby place to make the 42 . Then a taxi drew up and we climbed in. The driver did not appear very friendly. Then the light streaming from his headlights showed very 43 why no taxi wanted to take us to our hotel. And I began to understand the driver’s apparently unfriendly silence — he was worried. The steep incline (斜坡) ahead was 44 with snow. The taxi slowly made its way up the hill. Suddenly, we came to a dead stop, and the driver turned to us. “Look! It is very 45 to go forward. You have to get out and walk. If I drive any further, the taxi will slide back,” he said. “Er ... can you keep your headlight on and help my elder sister? The rest of us will follow you up,” I said. The driver 46 . We made it safely back to our hotel. Even though it 47 for the rest of the days, we could see the silver lining in the cloud(一线希望): the generous soul who helped us.
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