According to a review of evidence in a medical journal, runners live three years 46．(long) than non-runners. You don't have to run fast or for long47．(see)the benefit. You may drink, smoke, be overweight and still reduce your risk of 48． (die) early by running. While running regularly can't make you live forever, the review says it 49． (be) more effective at lengthening life50． walking, cycling or swimming. Two of the authors of the review also made a study published in 201451．showed a mere five to 10 minutes A day of running reduced the risk of heart disease and early deaths from all 52．(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 to53．(strength)your leg muscles(肌肉),avoid hills and get good running shoes. Running is cheap, easy and it's always54．(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 give55．a try.
46．longer
47．to see
48．dying
49．is
50．than
51．that \which
52．causes
53．strengthen
54．energetic
55．it \running
【分析】
本文是一篇说明文。文章讲述了跑步的好处，它可以帮助人们减少疾病发生，延年益寿。
46．考查副词的比较级。医学报告显示：经常跑步的人比不跑步的人多活3年。根据than可知用比较级，故填longer。
47．考查不定式作目的状语。你不必跑的太快或时间太长就能看到它的好处。此处不定式作目的状语，故填to see。
48．考查动名词。你也许喝酒、吸烟或超重，但仍然通过跑步会减少早亡的风险。此处of是介词，其后用动名词。故填dying。
49．考查动词的时态。医学报告显示：跑步比散步、骑车和游泳更能有效地延长寿命。这里叙述的是一个事实，故用一般现在时。故填is。
50．考查比较句型。跑步比散步、骑车和游泳更能有效地延长寿命。根据文章中的more effective可知，此处填than。
51．考查定语从句的关系词。此处a study是先行词，其在定语从句中作主语，故填that或which。
52．考查名词复数。一项研究表明，仅仅每天5到10分钟的跑步，就能减少各种原因的心脏病和早亡。空格处做from的宾语，前面有all可知，要用名词复数形式。故填causes。
53．考查词形变化。锻炼以增强你腿上的肌肉。此处to是不定式符号，其后用动词原形。故填strengthen。
54．考查词形变化。跑步总是让人充满活力的。根据it’s可知，系动词后用形容词作表语。故填energetic。
55．考查代词或名词的用法。我们都应该试试跑步。此处give it a try意为：试试。此处it可以指running。故填it或running。
点睛：本文比较难的一个题是10题。短语give it a try不容易想出来。give a try试试。give sb sth；give sth to sb这些短语学生都很清楚。但give后加it或sth的形式，比较少见。高考复习要尽可能多的复习相关的短语，尤其是用的比较多，而课本中出现较少的短语。