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

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 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