题目

相同质量的铝、铁、钙、钠四种金属，所含原子个数由少到多的顺序是（ ） A．钠、铝、钙、铁B．铝、铁、钙、钠C．钙、钠、铝、铁D．铁、钙、铝、钠 答案：考点：相对原子质量的概念及其计算方法．. 专题：物质的微观构成与物质的宏观组成． 分析：根据已有的知识进行分析解答，物质质量相同的情况下，相对原子质量越大的物质，所含的原子的个数越少，据此解答． 解答：解：物质质量相同的情况下，相对原子质量越大的物质，所含的原子的个数越 　　There were no classes that afternoon, so Henry went to a 　　1　　 shop near his home．The shop sold many jackets．He looked 　　2　　 them and at last chose a very nice one．He 　　3　　 it on and then told the shopkeeper to put it into a 　　4　　．At that time his friend Bruce came into the shop．They hadn't seen each other for a long time．They were so 　　5　　 to meet again that they forgot 　　6　　 else．Soon they were busy talking on and on happily． 　　It was nearly six o'clock, 　　7　　 they decided to go and have dinner together．Henry picked up the bag, and walked 　　8　　 the door of the shop．The shopkeeper stopped them and asked Henry to pay for the 　　9　　．Henry looked at him in surprise at first, but soon he remembered that he hadn't paid for it．He said 　　10　　, gave him the money and them left the shop with his friend． (1) [　　] A． fruit B． book C． food D． clothing (2) [　　] A． up B． for C． after D． at (3) [　　] A． put B． tried C． got D． turned (4) [　　] A． bag B． cup C． car D． pocket (5) [　　] A． worried B． interested C． pleased D． anxious (6) [　　] A． nobody B． anybody C． something D． everything (7) [　　] A． though B． so C． because D． but (8) [　　] A． towards B． through C． out of D． round (9) [　　] A． dinner B． bag C． jacket D． ticket (10) [　　] A． goodbye B． yes C． hello D． sorry