A、B、C、D、E均是由下列离子组成的可溶性化合物．组成这五种物质的离子有（离子不能重复组合）：

分别取它们进行实验，结果如下：

①A溶液与D溶液混合，没有明显现象；

②当B溶液加入到D溶液中时，有沉淀产生．继续加入B溶液，沉淀全部消失．

③将E溶液加热，有沉淀生成．

据此推断：A____ ；B____ ；C____ ；D____ ；E____ ．

材料一  盛宣传怀（1844—1916），江苏武进人。从1870年开始充当李鸿章幕僚，创办了一系列实业和教育事业。1896年，他将自办银行的见解向清廷作了系统的表述：“银行昉（开始）于泰西，其大旨在流通一国之货财，以应上下之求给，立法既善于中国之票号、钱庄，而国家任保护，权利无旁挠，故能维持不敝。各国通商以来，华人不知务此，英、法、德、俄、日本之银行乃推行来华，攘我大利……商务枢机所系，现又举办铁路，造端宏大，非急设中国银行，无以通华商之气脉，杜洋商之挟持。——摘编自谢俊美编《中国通商银行》

材料二  1897年5月27日，经过盛宣怀一段时间的筹备，中国自办的第一家银行——中国通商银行在上海正式成立。银行股份全属华股，总董全是华人，其构成不是封建官僚就是买办商人，实行“权归总董，利归股商”。它的内部章则制度完全仿照英商汇丰银行章程来拟定，用洋人为大班，掌握业务经营上的实权。它以上海总行为中心，积极开展业务。

                                                             中国通商银行（上海总行）各类放款占其放款总额百分比

——摘编自中国人民银行上海市分行金融研究室编《中国第一家银行——中国通商银行的初创时期》

小刚做“探究浮力与排开液体体积关系”的实验．他先在空气中测量圆柱体的重力，弹簧测力计的示数如图甲所示；再将圆柱体逐渐浸入注有35.0mL水的量筒中，弹簧测力计示数F和圆柱体排开水的体积V如表：

通读全文, 根据短文理解, 选择正确答案填空。

    If you are given only 1 yuan, can you live in a city for one day? It may be a little difficult. But 1 from Xi'an did it.

    On April 10^th, more than 60 students from the Middle School Attached to Northwestern Polytechnical University 2 the One Yuan Metropolis Survival. The charity for teenagers called Imperceptible Education held this 3  .  Students had to live and they had to deal with a lot of  4  tasks. It has happened in eight cities and is going to four others, including Beijing, in May.  

    To  5  , many students looked for part-time jobs and saw how hard life was. Zhang Qiyue, 14, asked more than 10 restaurants for a job and 6   got one chance. "We were sad when they said   7  . But slowly, we got used to it," he said. After being a waiter for an hour, he 8   25 yuan.

    Some made use of their talents  9  singing and dancing in parks or shopping malls. Many people who walked by took notice and helped   10  . Zhao Jiacheng, 14, drew pictures and made paper crafts （手工）. "This showed it's  11 to learn a special skill," he said.

    Living was hard,    12 finishing the tasks was not any easier. They went to different places to finish tasks in a  13  time. The most amazing one was when they had to exchange things worth a hundred yuan with only a piece of paper in half an hour. "We learned  14   to persuade （说服） others. From a balloon to a cake to a bottle of yogurt……, after almost 20 tries, we got an expensive necklace, "he said, "we would   15 all of the money we had raised to poor schools in Tibet."