All of the following are mentioned as factors that encourage fossilization except the

• A、speed of burying
  
  

• B、conditions of the water
  
  

• C、rate at which soft tissues decay
  
  

• D、cause of death of the animal
  
  

Task 1

16.Paragraph     ①   

17.Paragraph     ②   

18.Paragraph     ③   

19.Paragraph     ④   

20.Paragraph    ⑤  

A. Rich Resources of the State

B. Connections With the Outside World

C. Transportation Problem

D. The Natives of the Land

E. Position and Cold Climate

F. Land and Population

Task 2

21.For as long as three months of a year, the sun_________on the ice-covered land of Alaska

22.According to statistics,_________of the total area of Alaska has been used for farming,

23.Alaska was originally part of Russia, but was bought_________

24.Gold did not bring to Alaska as much wealth_________

25._________has become Alaska's single important resource.

A. as fish does

B. oil

C. by the United States in the 19th century

D. shines day and night

E. only a very small percentage

F. a limited amount of the gold found there