Scientists knew that Mt St Helens might erupt (爆发) soon.But no one could say when.And no one expected the terrible strength of the eruption.Many people were surprised and unready.Harry R．Truman,84，owned a small hotel in Mt St Helens.Scientists had asked people to move away because the volcano was becoming dangerous.

　　But Harry Truman would not leave his home.Now it is covered with many feet of dirty ash.A small cross stands above the place where Harry probably died.Perhaps it is better that he did not see the destruction of Mt St Helens，the once beautiful lake，and the forests.

　　But slowly，life is returning to the dead area around the mountain.Grass and small plants are beginning to grow again.Deer and birds have been seen.The land will never be the same as it once was.Perhaps Mt St Helens will erupt again.But this is all part of nature’s pattern of change，and man has little power to control it.

　　1．Which would be the best title for the passage?

　　A．Wind，Water，Fire and Ice

　　B．Volcano’s Beauty and Danger

　　C． The Power of Nature

　　D．Natural Force Shapes Beautiful Land for America

　　解析：选C。主旨大意题。作者在此想通过the Grand Canyon的形成过程告诉我们“自然的力量”。

　　2．After the eruption of volcano，what makes the sky turn dark?

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