According to a review of evidence in a medical journal, runners live three years 1 (long) than non-runners. 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.
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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.
【答案】本文是一篇说明文，介绍了跑步带来的多种健康益处。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。
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 ones risk of..."降低某人……的风险"， 此处介词of后用动名词作宾语。
【易错点拨】注意die是不规则动词，v.-ing形式为dying;名词为 death;形容词为dead。
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。
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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。 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。
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