According to the passage, what is the main difference between ritual and drama?

• A、Ritual uses music whereas drama does not. 
  
  

• B、Ritual is shorter than drama. 
  
  

• C、Ritual requires fewer performers than drama. 
  
  

• D、Ritual has a religious purpose and drama does not. 
  
  

假如你是Jerry,你的好朋友John 考上了耶魯大學(xué)，請根據(jù)以下內(nèi)容要點給他寫一封150 詞左右的英文祝賀信：

Main content:

1) congratulations;

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

3) your suggestions on a good college life.

Task 2

21. In the twentieth century, soot          

22. If snow and ice covered areas begin melting,           

23. A soot forcing is unusually effective, which          

24. Hansen cautioned that greenhouse gases          

25. Warming in the Northern Hemisphere was large in at middle and high latitudes.           

A. produces much more global warming than a carbon-dioxide forcing of the same magnitude

B. contributed to 25 percent of observed global warming

C. winter and spring

D. the warming effects increase

E. still surpass soot in warming the world's climate during the last century

F. can be seen mostly in the Northern Hemisphere