明党参是我国珍稀药用植物，对其进行保护性利用的方法不包括（  ）

（1）等质量的A、B两种物质分别与等质量的同浓度的稀盐酸充分反应，反应产生气体的质量与反应时间的关系如甲图所示．请回答下列问题：

①若A、B为Mg、Zn中的一种，则A是____，反应结束后只有一种金属剩余，则剩余金属为____．

②若A、B为碳酸钠粉末和碳酸钙块状固体中的一种，反应结束后，则它们消耗的酸　____ （填“A多”、“B多”或“相等”）．B反应至a点时，所得溶液的溶质为　____ （写化学式）．

（2）如乙图所示，A、B、C、D、E分别是铁、硝酸铜溶液、二氧化碳、稀硫酸溶液、氢氧化钠溶液中的一种，A是硝酸铜溶液．（“﹣”相连两物质能发生反应）请回答：

①D的化学式为　____ ，E物质的一种用途：____．

②A与B反应的化学方程式　____ 　，基本反应类型是____．

①是国家运用行政手段进行宏观调控

②是国家运用经济手段进行宏观调控

③有利于切实保护人民群众财产安全和合法权益

④有利于降低金融风险，增加人民群众的收入

完形填空

     When I was 13 years old, a boy gave me an important gift. It was a   1  It was the early autumn of my first year at a junior high school and my old school was far away.  2   , no one knew who I was. I was very lonely and afraid to make friends with   3  Every time I heard the other students talking and laughing, I  4  my heart break. I couldn't talk to anyone about my problem, and I didn't want my parents to   5  me. Then one day, my classmates talked happily with their friends, but i sat my desk   6   as usual. At that moment, a boy entered the classroom. I didn't know who he was. He passed me and then turned back. He   7  me and without a word, just smiled.

     Suddenly I felt the touch of something bright and friendly. It   8  me feel happy, lively and warm. That smile changed my life. I started to talk with the other students and made friends. Day by day, I became closer to everyone in my class. The boy with the lucky smile   9  my best friend now.

     I believe that the world is what you think it is. If you think you are lonely, you might always be alone. So smile at the world and it will   10