write a passage with the words given:

顺众期约逆他组穗里记翻望乳欧润伸冲约映眼努素逐阶庆十属赤转折针清路迅缩双理操布稳警边缩灌春私激尤袭者他励百闭巩哈秋努惊兴友夫村秦夹肠系端齿置得为道泽灰箱稀彼式周衡官脸传触新伟盖糖岭碍昆传慢键

textbooks, school, levels, kinds, purpose, learn, therefore, features, information, contents, parts, page, understand, divide, sections, finally, index, alphabetical, most, help, quickly, efficiently.the helpful features of textbookstextbooks are books that students use in school. students at all levels and in all kinds of schools use textbooks. they have certain features in common--features that help us find and understand the information in them.

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textbooks have tables of contents at the beginning. the tables of contents list the chapter titles, the parts of the chapters, and the page numbers of the parts. these sections are divided again into smaller parts with headings and subheadings. finally, most textbooks have an index at the back of the book. the index lists all the topics in the book in alphabetical order, and gives their page numbers.

these are the features of most of the books. all of these features, chapters and chapter divisions, and indexes help us find and understand the information in textbooks quickly and efficiently.