D
Jogging(慢跑) is good for us. It helps us live longer and more healthily(健康地). It's easy to do and it's free. You do not have to spend money jogging. You can do it in a park or even in your home. But many people find it boring after jogging for a while. Then how can we keep jogging fun? Here are some ideas to make your jogging more interesting.
Wear your favourite sports clothes and shoes when you jog. They make you more comfortable(舒服的).
Always jog outdoors(在户外). By changing your route, such as choosing another street or park, you will always have something interesting to enjoy while you are jogging.
Listen to your favourite music when you jog. The music can make you excited and run farther without feeling bored.
Make friends while jogging. It's always more enjoyable to jog with a friend. Join a running club, or invite(邀请) an old friend to go jogging.
12. Jogging is ______.
A. easy and free
B. easy but expensive
C. free but difficult
D. difficult and expensive()
13. How many ideas does the writer tell us to help make jogging fun?
A. Three.
B. Four.
C. Five.
D. Six.()
14. What does the underlined word “route” mean in Chinese?
A. 规律
B. 习惯
C. 情绪
D. 路线()
15. Why is it good to listen to music when you jog?
A. It makes us healthy.
B. It makes us run faster.
C. It makes us excited and run farther.
D. It makes us only think about jogging.()

12. A
13. B
14. D
15. C

12. 根据第一段中“It's easy to do and it's free.”可知，慢跑是容易且免费的，所以选A。
13. 文中分别提到“Wear your favourite sports clothes and shoes when you jog.”“Always jog outdoors(在户外). By changing your route...”“Listen to your favourite music when you jog.”“Make friends while jogging.”共四个使慢跑有趣的想法，所以选B。
14. 根据“such as choosing another street or park”（比如选择另一条街道或公园），可以推断“route”意思是“路线”，所以选D。
15. 根据“Listen to your favourite music when you jog. The music can make you excited and run farther without feeling bored.”可知，慢跑时听音乐能让我们兴奋并跑得更远，所以选C。