According to a review of evidence in a medical journal，runners live three years 1. (long)than nonrunners.You don't have to run fast or for long 2. (see)the benefit.You may drink，smoke，be overweight and still reduce your risk of 3. (die)early by running.
While running regularly can't make you live forever，the review says it 4. (be)more effective at lengthening life 5. walking，cycling or swimming.Two of the authors of the review also made a study published in 2014 6. showed a mere five to 10 minutes a day of running reduced the risk of heart disease and early deaths from all 7. (cause)．
The best exercise is one that you enjoy and will do.But otherwise...it's probably running.To avoid knee pain，you can run on soft surfaces，do exercises to 8. (strength)your leg muscles(肌肉)，avoid hills and get good running shoes.Running is cheap，easy and it's always 9. (energy)．If you are time poor，you need run for only half the time to get the same benefits as other sports，so perhaps we should all give 10. a try.
【语篇解读】 本文是一篇说明文，介绍了跑步带来的多种益处。一本医学杂志上的评论及研究表明，跑步不仅使人长寿，而且可以降低死亡的风险。
1．longer [考查副词的比较级。句中有than，故用long的比较级longer。]
2．to see [考查非谓语动词。本句有谓语，因此此处应用非谓语动词；分析句子结构及句意可知，此处应用动词不定式to see作目的状语。]
3．dying [考查非谓语动词。短语reduce one's risk of...“降低某人……的风险”，此处介词of后用动名词作宾语。有许多学生错填成death，是因为没注意后有early，此处early是副词，要修饰动词，而不能修饰名词。]
4．is [考查动词的时态和主谓一致。本文介绍了跑步的好处，通篇以一般现在时为主。本句中宾语从句与主句的时态应保持一致，故用一般现在时；且宾语从句中的主语为it，故用is。]
5．than [考查介词。根据句中的more可知，此处应用介词than引出比较对象。此处表示跑步比散步、骑行或游泳更能有效地延长寿命。故填than。]
6．that/which [考查定语从句。分析句子结构可知，此处引导定语从句，先行词为a study，且定语从句中缺少主语，故填关系代词that/which。]
7．causes [考查名词复数。此处cause是可数名词，意为“原因”，句中的all表示“所有”，后应用可数名词的复数形式，故填causes。]
8．strengthen [考查非谓语动词。分析句子结构可知，此处为动词不定式作目的状语，故本空应填动词strengthen，意为“增强，加强”。]
9．energetic [考查形容词。and连接两个并列分句，两个分句都表示跑步的特征，and前面的cheap和easy均为形容词，故此处应用形容词energetic作表语，意为“需要能量的，剧烈的”。]
10．it/running [考查固定搭配。give it a try为固定搭配，意为“试一试”，根据语境可知，it指代running，故可填it或running。注：填it为最佳答案，因为填running时需要文中给出提示词(run)。]
