Heaters should be kept going in the night for men to survive in polar areas.

• A、True
  
  

• B、False
  
  

• C、Not Given
  
  

Polar explorers can stay alive by wearing warm coats and furs.

• A、True
  
  

• B、False 
  
  

• C、Not Given
  
  

假如你是Jerry,你的好朋友John 考上了耶鲁大学，请根据以下内容要点给他写一封150 词左右的英文祝贺信：

Main content:

1) congratulations;

2) the differences between college life and high school life;

3) your suggestions on a good college life.