Ex.12 Read the following paragraph and identify the signal word that the writer uses to indicate the importance of note-taking. 阅读以下段落，找出作者用来记笔记重要性的信号词。Note-taking is very important for college students. First, by the very act of writing, students are engaging in active learning. Research has shown that students retain less if they only listen or read. In addition, note-taking requires students to process the information. Because they cannot write down every word, they have to choose the most important points, paraphrase, and summarize information. What's more, college classes rely on the lecture to transmit information. The professor might have a different view on the subject from what is offered in the textbook and only explain it in class. Finally, students can use the notes they have taken for review for tests and exams. It is easier to reread notes than to reread the whole textbook. Thus, note-taking is a valuable practice for students.