What is the main propose of the lecture、

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• 1Why does the professor say this、

  A.He does not approve of all the aspects of the shows.

  B.He does not think the events can be easily defined.

  C.He does not consider the shows to be authentic Dada.

  D.He does not know enough about the events to categorize them.

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• 2According to the professor, what contributed to the chaotic nature of the performances at the Cabaret Voltaire、 [Choose two answers]

  A.There were no professional actors.

  B.The script was torn up and allowed to fall to the floor during the performance.

  C.Different art forms shared the same stage.

  D.The performances varied from night to night.

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• 3What does the professor identify as aspects of traditional play、 [Choose two answers]

  A.Characters each have their own motivation.

  B.A plot is developed.

  C.The play consists of several acts.

  D.C.The play consists of several acts.D.Actors ignore the audienc

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• 4According to the professor, why did some Dadaist write poetry by pulling words out of a hat、

  A.To reflect the randomness they saw in the worldt、

  B.To illustrate the connection between poetry performances and magic shows

  C.To indicate that Dada should not be taken too seriously

  D.To demonstrate that Dadaists did not need much formal training

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• 5Why does the professor mention a stool with a bicycle wheel mounted on top、

  A.To give an example of what Dadaists were reacting against

  B.To show something that Dadaists would consider beautiful

  C.To illustrate how Dadaists rejected the traditional definition of art

  D.To explain the Dadaists’ practice of creating sculptures from everyday objects

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• 6Why is geological evidence of liquid water on Earth and Mars three to four billion years ago problematic、

  A.It suggests that the solar system is younger than it could possibly be.

  B.It suggests that the young Sun was less bright than it is today.

  C.It challenges the prevailing model of star formation.

  D.It contradicts theories about the beginning of the universe

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• 7Why did the greenhouse-gas solution fail to explain the early presence of liquid water on Earth and Mars、 [Choose two answers]

  A.The types of gases that were present in their atmospheres could not have caused temperatures to rise

  B.There was insufficient carbon dioxide in their atmospheres to produce a greenhouse effect.

  C.Solar radiation would have destroyed the ammonia in their atmospheres.

  D.Clouds of ammonia would have lowered temperatures by blocking out sunlight.

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• 8Why does the professor mention the solar wind、

  A.To explain a way the Sun is losing mass

  B.To point out that it was less intense billions of years ago

  C.To suggest a reason for early climate differences between Earth and Mars

  D.To explain the importance of solving the faint-young-Sun paradox

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• 9What factor did astronomers consider when calculating the required solar mass for liquid water to exist on Earth and Mars、

  A.The young Sun lost mass at a slower rate than it currently does

  B.The young Sun was closer to the planets than it currently is

  C.The young Sun had less solar wind activity than it currently does

  D.The young Sun comprised greater amounts of helium than it currently does

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• 10What is the professor's attitude about the bright-young-Sun solution、

  A.He is surprised that it is not more widely accepted

  B.He feels that it raises too many unanswerable questions

  C.He is confident that future research will determine whether it is true.

  D.He expects that other possible solutions to the paradox will be proposed.

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