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新课标全国理综卷中有7道化学选择题,共42分,占化学学科总分的42%。在考试中如能用最短时间和最少精力,迅速、准确地拿下化学选择题,对提高化学学科得分及理科综合总分有重大作用。一、近三年新课标全国Ⅱ卷理综化学客观题对比分析从近三年新课标全国Ⅱ卷对比分析(见表1)可以看出,客观题(选择题)考查的知识基础性强、具有层次性,大多属于中等难度题;知识覆盖面广,内容涉及必修、选修模块;考查主干知识相对稳定,如化学与STS、化学实验、有机化合物等。可预
The new curriculum National Science Volume has seven chemical choice questions, a total of 42 points, accounting for 42% of the total score of chemistry. If you can take the shortest time and the least energy in your exams, you can quickly and accurately take the chemical choice test, which will play a significant role in improving the score of chemistry subject and science comprehensive score. First, the past three years, the new curriculum standards in the country Ⅱ Volume II comprehensive analysis of the objective changes in chemistry From the recent three years of the New Curriculum National Comparative Analysis of Volume II (Table 1) shows that the objective questions (multiple choice questions) examination of the basic knowledge Strong, hierarchical, most of them belong to the intermediate degree of difficulty; knowledge covers a wide range of topics related to compulsory, elective module; test backbone knowledge is relatively stable, such as chemistry and STS, chemical experiments, organic compounds. Available