论文部分内容阅读
一、问题的提出2013年高考已落下帷幕,纵观各省市的高考试题,总有一些题目让我们赞叹其命题的巧妙与精辟,现整理出部分好题、妙题、易错题与大家共享,并就此谈谈笔者的一些赏析与见解.二、试题赏析1.展现创新,突显探究的意识【2013年上海高考第21题】一定条件下,将0.1 L CO、0.2 L CO2、0.1 L NO、0.2 L NO2和0.2 L NH3混合,然后通过分别盛有足量蒸馏水、饱和碳酸氢钠溶液和氢氧化钠溶液的三个洗气瓶(洗气瓶排列顺序不确定).假设气体通过每个洗气瓶都能充分反应则尾气(已干燥).A.可能是单一气体B.不可能含有一氧化碳
First, the problem raised The college entrance examination in 2013 has come to an end, taking a look at the college entrance examination exams in various provinces and cities, there are always some topics that allow us to admire the proposition ingenuity and brilliant, now sort out some good questions, questions, easy to share with everyone wrong , And in this connection to talk about some of the author’s appreciation and opinion. Second, the Appreciation of the test 1. To show innovation, highlighting the exploration of consciousness [2013 Shanghai Entrance Exam] Under certain conditions, 0.1 L CO, 0.2 L CO2, 0.1 L NO , 0.2 L NO2 and 0.2 L NH3, and then passed through three scrubbers (scrubbers arranged in an ascending order) containing enough distilled water, saturated sodium bicarbonate solution and sodium hydroxide solution, respectively. Assuming that the gas passes through each Gas cylinders are fully responsive to the exhaust gas (dried) .A. May be a single gas B. It is not possible to contain carbon monoxide