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近年来,各省市中考化学题目愈来愈贴近生活,涉及知识的范围较广,甚至连包装袋、说明书上的内容都列入了考察的范围。在遇到这类运用化学知识解决实际问题时,应注意以下几点:第一,排除无关信息的干扰;第二,把问题和化学知识紧密联系起来;第三,运用分析、推理等方法解决实际问题,思维要缜密;第四,解答要符合题中所述的生活、生产实际。下面就这样类型的试题作一汇总分析。例1(2004年黑龙江省中考题)图为同学经常使用的某品牌修正液包装标签上的部分文字和图片。请仔细阅读、观察,根据此图及日常生活经验分析,推测修正液的性质。侄少答出三点)
In recent years, chemistry topics in the provinces and universities have become more and more close to life. The range of knowledge involved is relatively wide. Even the contents of packaging bags and manuals have been included in the scope of investigation. When encountering this kind of application of chemical knowledge to solve practical problems, attention should be paid to the following points: first, the exclusion of interference from irrelevant information; secondly, the problems and chemical knowledge are closely linked; and thirdly, analysis and reasoning are used to solve the problem. Practical issues require careful thinking. Fourth, the answers must be consistent with the life and production practices described in the questions. The following is a summary analysis of this type of test questions. Example 1 (2004 in Heilongjiang Province Exam Questions) The picture shows some words and pictures on the label of a certain brand of correction fluid often used by classmates. Please read and observe carefully. Based on this graph and analysis of daily life experience, infer the nature of the correction fluid.侄 答 答 答 三 三