Inflatable mirrors are used to reduce the space- based solar power system.

• A、 Right
  
  

• B、Wrong
  
  

• C、Not mentioned
  
  

Space-based solar cells could collect solar power only when skies are clear.

• A、Right
  
  

• B、Wrong
  
  

• C、Not mentioned
  
  

第七部分:短文写作(第51题,30分)

51.请根据下列材料写一篇150 词左右的英语短文。

We cannot fail to notice that countless uncivilized behaviors exist in our daily lives, such as spitting, talking loudly, littering, saying nasty words in public places and so forth. What will you do in public?