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在高考中 ,时间有限 ,解题的速度与正确率有时决定了考试成绩的优劣 .而一些计算型的选择题 ,一般都有简便的解答方法 ,不需要花费很多的时间 .要做到既快且正确率又高 ,关键是对相应的化学基础知识的理解 ,只有在对有关的基础知识深刻理解的前提下 ,才能做到 .下面举几例说明
In the college entrance examination, the time is limited, and the speed and accuracy of problem solving sometimes determine the pros and cons of the test scores. However, some computational multiple-choice questions are generally easy to answer and do not require a lot of time. The quick and correct rate is high, the key is to understand the corresponding basic knowledge of chemistry, and can only be achieved on the premise of a deep understanding of the basic knowledge. Here are some examples