一、段首题的选项特征1.正确选项通常是段落主题句。考生可认真阅读空格后段落的内容,根据段落主题句的概括性原则,查找同义词或其他相关的词,推断出主题句。(2016年高考北京卷)75 For the risk-seekers,a part of the brain related to pleasure becomes active,while for the rest of us,a part of the brain related to fear First, the first paragraph of the title of the option characteristics 1. The correct option is usually the paragraph topic sentence. Candidates may carefully read the contents of the paragraph after the paragraph, according to the general principle of the paragraph topic sentence, find synonyms or other related words, infer the topic sentence. (For the risk-seekers, a part of the brain related to pleasure becomes active, while for the rest of us, a part of the brain related to fear