题目：The parents of top athletes have often been successful athletes themselves.
文章：No one theory can explain improvements in performance, but the most important factor has been genetics. The athletes must choose his parents carefully. ……
5. 时间对应信息不一致，导致主体信息无法判断
Example:
题目：There was little improvement in athletic performance before the twentieth century.
文章：Since the early years of the twentieth century, when the International Athletic Federation began keeping records, there has been a steady improvement in how fast athletes run, how high they jump and how far they are able to h massive objects…….
除了以上这些方面之外，还有一些内容学要掌握以确定是否是Not Given。
Ⅰ. 题目中有比较结构，文章中无比较结构则答案判断为Not Given。
例一：
原文: And the future? It is anticipated that, in the years to come, leisure spending will account for between a third to a half of all household spending, whilst it is difficult to give exact figures, the leisure industry will certainly experience a long period of sustained growth.
题目: In future, people will pay less for the leisure facilities they use than they do today.
原文: Healthcare providers diagnose insomnia in several ways. One way is to categorize insomnia by how often it occurs. Another way is to identify the insomnia by what is causing the sleep deprivation. The two main types of insomnia have been described as Primary Insomnia and Secondary Insomnia. Primary Insomnia is a chronic condition with little apparent association with stress or a medical problem. The most common form of primary insomnia is psychophysiological insomnia. Secondary insomnia is caused by symptoms that accompany a medical condition such as anxiety, depression or pain.
题目: Secondary insomnia is far more common than Primary insomnia.
分析：
第一步：确定题目中的定位词。定位词是两个专有名词Secondary insomnia和Primary insomnia。而本题的关键词则是far more common than的比较结构。
原文: Working hours are not expected to decrease, partly because the 24-hour society will need to be serviced; and secondly, because more people will be needed to keep the service/leisure industries running. In the coming decades, the pace of change will accelerate generating greater wealth at a faster rate than ever before. Surveys show that this is already happening in many parts of Europe. The south-east of England, for example, is now supposedly the richest area in the EEC. The ‘leisure pound’ is one of the driving forces behind this surge.
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t or f?
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