题目

根据下列五种微粒的结构示意图，回答下列问题：（1）图中微粒共能表示 种元素，这几种元素共同组成化合物与盐酸发生中和反应的化学方程式是： 。（2）图中表示的阴离子是(用离子符号表示) 。 答案：【答案】（1）3或三 HCl + NaOH == NaCl +H2O （2）O2-【解析】试题分析：（1）元素的种类由质子数决定，而结构示意图中圆圈里的数字即为核内质子数，故图中微粒共能表示3或三种元素，即氢元素、氧元素、钠元素，这三种元素共同组成化合物为：NaOH，故它与盐酸发生中和反应的化学方程式是：HCl + NaOH == N阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式（最多限填三个单词）填空。It was the best of times, it was the【1】 of times. It was the season of light, it was the season of darkness. It was the spring of hope, it was the winter of【2】 (sad). It was the year one thousand seven hundred and seventy-five.In France there was a King and a Queen, and in England there was a King and a Queen. They believed that nothing would ever change. But in France things were bad, and getting worse. The people were poor, hungry and 【3】 (happy). The King made paper money and spent it, and the people had nothing【4】 (eat). Behind 【5】 (close) doors in the homes of the people, voices spoke in whispers (低声说) against the King and the rich; they were only whispers 【6】 they were the angry whispers of hopeless people.Late one November night, in that same year 1775, a coach (四轮马车) going from London to Dover, stopped at the top of a long hill. The horses were tired, but as they rested, the driver heard another horse【7】 (come) fast up the hill behind them. The rider stopped his horse beside the coach and shouted:"I want a passenger, Mr. Jarvis Lorry, from Tellson's Bank in London.""I am Mr. Jarvis Lorry," said one of the passengers, putting his head 【8】 of the window. "What do you want?""It's me! Jerry, Jerry Cruncher, from Tellson's Bank, sir," Cried the man on the horse."What's the matter, Jerry?" called Mr. Lorry"A message【9】 you, Mr. Lorry. You've got to wait at Dover for a young lady.""Very well, Jerry," said Mr. Lorry, "Tell them my answer is CAME BACK TO LIFE."It was a strange message, and a stranger answer. No one in the coach understood 【10】 they meant.