2018年公共英语三级阅读理解解题技巧：主旨类考题
主旨类考题
该类题主要测试对文章段落主题思想的掌握，涉及到文章的中心思想、主要
内容和标题等。标志词一般有“main idea”、“main topic”、“best title”、“subject”、“purpose of the writer”等。这类题的解题关键在于找出文章或段落主题句的位置，并排除干扰项。一般说来正确的选项应具有概括性，能概括文章的全部内容，既不能太宽也不能太窄;还应具有宏观性和抽象性，不应停留在个别事例或事实上;而干扰项一般都是些局部信息，或是一句未展开讨论的话，或是某一段的主要内容;干扰项还可能概括内容太大，把文章的内容无限制的扩大化，包括的内容多于文章所阐述的内容，过于笼统;还有一些干扰项是一些无关信息，在文章中根本找不到根据。
有超过一半的文章主旨出现在文章的开头或结尾。例如：
As the cause is lack of bright light, the treatment is to be in bright light every day by using a light box of a similar bright light treatment. (Going to a brightly-lit climate, whether skiing or somewhere hot, is indeed a cure.) The preferred level of light is about as bright as a spring morning on a clear day and for most people sitting in front of a light box, allowing the light to reach the eyes, for between 15 and 45 minutes daily will be sufficient to alleviate the symptoms. The user does not have to stare at the light, but can watch TV or read a book, just allowing the light to reach the eyes. OUTSIDE IN have a complete range of suitable lights, all in line with the research findings from medical and academic facilities. They are all available on our pioneering HOME TRIAL SYSTEM. (2006年12月浙江省大学英语三级考试题)
Which of the following sentences best express the main idea of the paragraph?
A. Why people suffer from SAD.
B. How SAD patients can be treated.
C. How long can SAD treatment lasts.
D. Where people can go for SAD treatment.
此段主要讲述SAD的治疗方法，而不是人们患SAD的原因、治疗SAD需
要多长时间以及到何地去治疗，因此，B项的how说的是方法、方式，故选之。
还有相当多的一些文章，没有明显的主题句，这就要求考生对全文内容或段落进行分析、归纳、概括和推理，才能找到其主旨大意。
