Which is TRUE according to the passage、

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• 1That scientists study the history of large earthquakes in certain areas is to ultimately_________.

  A.do research on the past frequency of large earthquakes

  B.estimate the magnitude of similar earthquakes

  C.forecast the possibilities of similar earthquakes

  D.judge the specific location of future earthquakes

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• 2What does the passage mainly talk about、

  A.What an earthquake is like.

  B.How to predict earthquakes.

  C.Where earthquakes often happen.

  D.When a fault is formed.

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• 3The best title for the passage would be _______.

  A.Are Sharks Dangerous、

  B.Sharks And Humans

  C.Sharks: Humans’ Friends

  D.Sharks Help Save Human Lives

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• 4The underlined word “prolong” in the last but one paragraph means ______.

  A.save

  B.protect

  C.lengthen

  D.improve

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• 5It can be inferred from the passage that _______.

  A.movies have given people the wrong impression of sharks

  B.most sharks are dangerous to humans

  C.sharks will attack anyone who is wearing black

  D.it is dangerous to swim in the ocean

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• 6What is the critical factor of forming a fault、

  A.The material of rocks.

  B.The existing time span of the rocks.

  C.The plate movements around the rocks.

  D.The amount of strain released in the last earthquak

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• 7According to the passage, we can know that the San Andreas Fault System____.

  A.has a greater understanding of the causes and effects of earthquakes

  B.stores much more information about the history of large earthquakes

  C.offers the potential for doing research on the faults where strain accumulates

  D.illustrates specifically how rocks along a fault are formed

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