Which of the following is true of the fossil deposits discussed in the passage?

• A、They include examples of newly discovered species.
  
  

• B、They contain large numbers of well-preserved specimens
  
  

• C、They are older than fossils found in other places.
  
  

• D、They have been analyzed more carefully than other fossils.
  
  

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

The word“outstanding”in Paragraph 2 is closest in meaning to

• A、“extensive”
  
  

• B、“surprising”
  
  

• C、“ vertical”
  
  

• D、“excellent”