根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项
Five tips for safe running
We all know that exercise is good for our health. But some kinds of exercise may be better than others. Running, for example, may help to protect against heart disease and other health problems.
Running is good exercise, but it can be hard on the body. ___16___
Take it easy. Do not run too much, too soon or too fast. Most people get running injuries when they push themselves too bad. The body needs time to get used to increases in distance or speed.___17___
Listen to your body. Most running injuries do not come unexpectedly. ___18___ They may include body aches, sore muscles(肌肉酸痛) and pain that does not go away.
___19___ There is no single best shoe for every runner. You should find the shoes that offer the best fit and support for your feet. More importantly, you should replace your shoes every 500 to 800 kilometers.
Take good notes. Take time after each run to write down what you did and how you felt. Look for patterns, things that happen over and over again. These notes will help you find the best exercise for you.
Cross train. As we said earlier, running is hard on your body. So physical fitness experts suggest some form of cross training to improve muscle balance and to help you stay injury free. They say swimming, yoga, and riding a bicycle are good exercises to combine with running. ___20___
A. Get good running shoes.
B. Usually there are warning signs.
C. Running may also help you live longer.
D. These exercises are easier on the body.
E. Muscles and joints(关节) need time to recover.
F. As advertisements for the running shoes Nike say, “Just do it.”
G. Here are five ideas to reduce the risk of injury.
【答案】16. G 17. E 18. B 19. A 20. D
【解析】
这是一篇说明文。跑步是一种很好的锻炼，但是对身体要求高。短文就降低跑步受伤风险提出了五点方法。
【16题详解】
由下文的各个段落的小标题“Take It easy Listen to your body. Get good running shoes. Take good notes. Cross train”可知，放松。倾听身体的声音。买双好跑鞋。做好笔记。交叉锻炼。所以小题1要总说“这里有五个方法可以减少受伤的可能性”然后进行分说。故G选项“这里有五个方法可以减少受伤的可能性”引出下文。故选G。
【17题详解】
由上文“The body needs time to get used to increase in distance or speed”可知，身体需要时间来适应距离或速度的增加。所以小题2与前一句一同来说明不能跑太快、太多的原因。故E选项“肌肉和关节需要时间恢复”符合句意。故选E。
【18题详解】
由上文“Most running injuries do not come unexpectedly (意外地)”和下文“They may include body aches, sore muscles（肌肉)and pain that does not go away.”可知，大多数跑步受伤不是毫无征兆。它们可能包括身体疼痛、肌肉酸痛和无法消失的疼痛。所以小题3在文中要起到承上启下的作用，我们要注意倾听我们的身体，大多数跑步受的伤不是突然来的，故选项B意为“通常，身体会给我们一些小的信号”符合句意，故选B。
【19题详解】
由下文“There is no single best shoe for every runner. You should find the shoe that offers the best fit and support for your feet. More importantly, you should replace your shoes every 500 to 800 kilometers.”可知没有一双能适合所有跑步者的最佳跑鞋。你应该找到最适合你脚的鞋子。更重要的是，你应该每500到800公里更换鞋。所以本段主要在讨论要买双好跑鞋也就是本段小标题要表达的内容。故A选项“买双好跑鞋”符合句意。故选A。
20题详解】
由上文“They say, besides running. swimming, yoga.and riding a bicycle are good exercises”可知，他们说，除了跑步，游泳，瑜伽和骑自行车都是很好的运动。所以小题5要总结性地表达这些交叉这些运动对身体要求不高。根据前文可知，作者认为跑步对于人们而言是很难的一项，但是爬山骑车等确实相对简单的，故选项D意为“这些活动对于身体而言很简单”符合句意，故选D。
Five tips for safe running
We all know that exercise is good for our health. But some kinds of exercise may be better than others. Running, for example, may help to protect against heart disease and other health problems.
Running is good exercise, but it can be hard on the body. ___16___
Take it easy. Do not run too much, too soon or too fast. Most people get running injuries when they push themselves too bad. The body needs time to get used to increases in distance or speed.___17___
Listen to your body. Most running injuries do not come unexpectedly. ___18___ They may include body aches, sore muscles(肌肉酸痛) and pain that does not go away.
___19___ There is no single best shoe for every runner. You should find the shoes that offer the best fit and support for your feet. More importantly, you should replace your shoes every 500 to 800 kilometers.
Take good notes. Take time after each run to write down what you did and how you felt. Look for patterns, things that happen over and over again. These notes will help you find the best exercise for you.
Cross train. As we said earlier, running is hard on your body. So physical fitness experts suggest some form of cross training to improve muscle balance and to help you stay injury free. They say swimming, yoga, and riding a bicycle are good exercises to combine with running. ___20___
A. Get good running shoes.
B. Usually there are warning signs.
C. Running may also help you live longer.
D. These exercises are easier on the body.
E. Muscles and joints(关节) need time to recover.
F. As advertisements for the running shoes Nike say, “Just do it.”
G. Here are five ideas to reduce the risk of injury.
【答案】16. G 17. E 18. B 19. A 20. D
【解析】
这是一篇说明文。跑步是一种很好的锻炼，但是对身体要求高。短文就降低跑步受伤风险提出了五点方法。
【16题详解】
由下文的各个段落的小标题“Take It easy Listen to your body. Get good running shoes. Take good notes. Cross train”可知，放松。倾听身体的声音。买双好跑鞋。做好笔记。交叉锻炼。所以小题1要总说“这里有五个方法可以减少受伤的可能性”然后进行分说。故G选项“这里有五个方法可以减少受伤的可能性”引出下文。故选G。
【17题详解】
由上文“The body needs time to get used to increase in distance or speed”可知，身体需要时间来适应距离或速度的增加。所以小题2与前一句一同来说明不能跑太快、太多的原因。故E选项“肌肉和关节需要时间恢复”符合句意。故选E。
【18题详解】
由上文“Most running injuries do not come unexpectedly (意外地)”和下文“They may include body aches, sore muscles（肌肉)and pain that does not go away.”可知，大多数跑步受伤不是毫无征兆。它们可能包括身体疼痛、肌肉酸痛和无法消失的疼痛。所以小题3在文中要起到承上启下的作用，我们要注意倾听我们的身体，大多数跑步受的伤不是突然来的，故选项B意为“通常，身体会给我们一些小的信号”符合句意，故选B。
【19题详解】
由下文“There is no single best shoe for every runner. You should find the shoe that offers the best fit and support for your feet. More importantly, you should replace your shoes every 500 to 800 kilometers.”可知没有一双能适合所有跑步者的最佳跑鞋。你应该找到最适合你脚的鞋子。更重要的是，你应该每500到800公里更换鞋。所以本段主要在讨论要买双好跑鞋也就是本段小标题要表达的内容。故A选项“买双好跑鞋”符合句意。故选A。
20题详解】
由上文“They say, besides running. swimming, yoga.and riding a bicycle are good exercises”可知，他们说，除了跑步，游泳，瑜伽和骑自行车都是很好的运动。所以小题5要总结性地表达这些交叉这些运动对身体要求不高。根据前文可知，作者认为跑步对于人们而言是很难的一项，但是爬山骑车等确实相对简单的，故选项D意为“这些活动对于身体而言很简单”符合句意，故选D。
