填空题要求在题目的空格里按照前后文字的含义，填入简捷、规范、确切的字、词、句、数字或化学用语、公式等。它具有答案唯一、答题书写量不大、内容细而不复杂、构思新颖灵活，但概念性强，涉及化学知识面很广的特点。它不但能用来考查考生的阅读理解和文字表达能力，还... Fill in the blanks and ask questions to fill in simple, regular, exact words, words, sentences, numbers or chemical terms, formulas, etc. in the space of the title. It has the unique answer, a small amount of written answer, a fine and complex content, a novel and flexible concept, but it is conceptually strong and involves a wide range of chemical knowledge. It can not only be used to examine candidates’ reading comprehension and writing skills, but also...