题目

对于有机物的叙述中不正确的是（ ） A．常温下，与Na2CO3溶液反应放出CO2 B．能发生水解反应，1 mol 该有机物能与8 mol 的NaOH反应 C．与稀硫酸共热能生成两种有机物 D．该物质的化学式是C14H10O9 答案：【考点】有机物的结构和性质． 【分析】该有机物含有﹣COOH，具有酸性，可发生酯化反应，还有酚羟基，可发生取代、氧化和显色反应，还有酯基，可发生水解，水解生成羧基和酚羟基，以此解答该题． 【解答】解：A．分子中含有羧基，具有酸性，可与Na2CO3溶液反应，故A正确； B．水解产物中共含有International Robotics Forum (论坛）Tokyo Big Sight，Tokyo, Japan, December 4-5 The Robotics Society of Japan (RSJ), to provide opportunities for young robot lovers to learn more about industrial and service robots, is going to hold the International Robotics Forum that will cooperate with this year’s International Robot Exhibition. The lectures and explanations throughout the Conference will be given in Japanese but will be interpreted into English at the same time. The Conference will offer a great opportunity for senior high school students from all around the world to communicate with each other through robots. Therefore, we look forward to your active participation. The event will take place two days. On the morning of Day One, Prof. Shinichi Yuta of the Shibaura Institute of Technology will give a lecture on basic mobile robotics and learning through robots. This will be followed by a talk by Mr. Kazuhiko Yokoyama of Yasukawa Electric Corporation who will explain the mechanism and control of robots and also point out the highlights of the International Robot Exhibition. We will prepare a challenge for all the participants. We will send you themes for robot research. You will study them in advance, and on the afternoon of Day One, you will visit the Tokyo International Exhibition Center and investigate real robot. You will be able to experience fun and excitement of advanced robot technologies. On the morning of Day Two, you will present your study and investigation results. On the afternoon of Day Two, as the final event, awards will be given by the RSJ to groups that have given outstanding presentations. We hope that many future robot researchers and engineers will be born today.1.Who is the Conference intended for?A. Japanese robot researchers.B. Senior high school students worldwide.C. The RSJ professors.D. Robot lovers of all ages.2.When can the participants study the real robots?A. On the afternoon of December 4.B. On the morning of December 5.C. On the morning of December 4.D. On the afternoon of December 5.3.What type of writing is this text?A. A research paper.B. An announcement.C. An exhibition guide.D. The robotics introduction.