题目

已知某微粒的结构示意图为： （ y≠0 ）．请回答： （1）当x﹣y=10时，该微粒为 （填“原子”、“阳离子”或“阴离子”）． （2）当y=8时，微粒可能为（不少于5种） ． （3）写出x+y=12与x+y=16的元素最高价氧化物对应水化物相互反应的离子方程式 AO ． 答案：【考点】原子结构示意图． 【分析】（1）当x﹣y=10时，核内的质子数等于核外的电子数； （2）当y=8时，该微粒达8电子的稳定结构，可能为原子、阳离子或阴离子，据此分析； （3）由于当此微粒是元素的原子时，则有x=10+y，然后结合x+y=12与x+y=16，分别求解出两种元素的种类，据此分析． 【解答】解： 阅读理解。 　　Once a country woman went to a big city on business．As it was her first time to be in a big city, she was very happy, she found that everything in the city was different from the things in the country．She saw a tall and beautiful building in the center of the city and went into it．On the first floor, she saw an old woman standing in front of a big door, and the door was always closed．After a while, the door opened．The old woman went inside, then the door closed behind her．A few minutes later, the door opened again, and a beautiful young woman came out of it．The country woman was very pleased and surprised．She thought, “This must be the door to a magic(魔术的)box．If I get into it, I’ll also become younger and more beautiful, too．” 　　So as soon as the door opened again, she quickly got into the box．To her surprise, she saw many buttons with red yellow or green lights inside on the wall, she felt worried, for she was not sure which button she should push if she wanted to go into the magic box． 根据短文内容，判断正(T)误(F)。 (1) The country woman never went to big cities before． (　　) (2) She thought it better to live in the country than to live in the city． (　　) (3) The magic box could really make old people become young． (　　) (4) The country woman was not young． (　　) (5) In fact, the box was not a magic box．It was a lift．It takes people up and down the building． (　　)