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高考阅读理解指导：（一）主旨大意类 预习作业： 一、判断下面的问题属于哪种类型的主旨大意题，就下面的几种提问归类：： 类型 主题类 目的类 标题类 标志词 题号 二、找出各段文字的主题句： 1. Today the problem of environment has become more and more serious. The world population is rising, so quickly that world has become too crowded. We are using up our natural resources too quickly and at the same time we are polluting our environment with dangerous chemicals. If we continue to do this, human life on earth will not survive. 2. Often no one looks more guilty than the innocent. On the other hand, nobody may look more innocent than professional criminal. And the man who knows “everything” may really only be trying to hide his own weakness. So, it is foolish to try to judge a person only by his appearance. 3. When you are in public places, you will see many smokers. Most of them are young people and even high school students. It is said that in China, about 45 percent of people are smokers. Why do so many people enjoy smoking? They think that it is a pleasure. But in fact , smoking is a bad habit. It does great harm to our health. It is harmful not only to the smoker himself, but also to others, especially to the people around him. For the smoker, it may cause a variety of diseases, such as lung cancer. Besides, it is also a great waste of money, and many fires are caused by careless smokers. 三、试题回顾： 1. 二段考试A篇（记叙类） …… (尾段)For the past 22 years, I have been a fifth grade teacher. Because of Mrs. Wakefield’s influence on my life, I am now encouraging students who have had difficulties in their lives to believe that they can overcome any difficulty and become someone. I have won numerous awards up to now, such as Teacher of the Year. I owe it all to one fifth grade teacher who believed in me and challenged me to be all that I could be. 58. What is the writer’s purpose in writing the passage? A. To show his respect to a special teacher. B. To express his devotion to his work. C. To share his teaching experience with us. D. To tell us his stor