Scientists are producing an increasing number of findings on the links between smell and memory. The most prominent scientist in this field is Dr. Alan Hirsch, a US neurologist who specializes in the treatment of patients who have lost their sense of smell or taste. He believes that the memories that certain smells bring back to people are not actually as important as the emotions that are associated with the smells. He also argues that our minds filter these emotions in a positive way, making past times seem better than they perhaps were.

　　我们注意到这个段落的题目是“Smell and Memory”，我们还知道题目是中心思想的反映。

　　据此，我们可以得知本段主要论述的应是smell and memory之间的联系，由此找到了关键词语“the links between smell and memory”(在段首)，而能说明它们之间关系的句子又是最后一句。

　　所以，这个段落的核心信息是：“Some smells remind us of a previous thing in a way that is better than the real experience.”

　　由此判定，本段的首尾都需细心地、稍慢地阅读，而对“最著名的;专门治疗何种病人的”这样相对次要的句子就可以加快阅读速度。

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