21. Reports say that the walkers are mostly from（）

• A、we divide a 30-minute walk into 3 parts
  
  

• B、our in activeness
  
  

• C、we may like to try a longer one
  
  

• D、big cities in America
  
  

• E、a daily 30-minute quick walk
  
  

• F、a face-to-face talk
  
  

19. Paragraph 4:

• A、The key to walking is getting started.
  
  

• B、Walking is the first step to making changes.
  
  

• C、The advantage of walking is its simplicity.
  
  

• D、Walking is a great way for health improvement.
  
  

• E、More Americans take up walking than before.
  
  

• F、Modern lifestyle affects our health negatively.
  
  

第七部分:短文写作(第51题，30分)

请根据所提供材料中的要求完成一篇100词左右的英文写作任务。将你的答案写在答题纸相应的位置上。

51.某英语学习报征集一篇题为“My Favorite Chinese Festival”的稿件。请就此题目写一篇英文短文应征，内容包括:

你最喜爱的中国节日是什么

你为什么喜欢这个节日