The scientists were trying to look for all possible _______ as to where this species came from.

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• 1Many families were broken up and their members were killed in the _______ caused by the earthquake in Yanan.

  A.chaos

  B.chains

  C.plains

  D.masses

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• 2---Don't be so naughty! Be your ________. ---Got it.

  A.manners

  B.age

  C.behavior

  D.politeness

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• 3Due to the unreasonable individual income _______, the gap between the rich and poor has become an outstanding issue.

  A.contribution

  B.association

  C.accommodation

  D.distribution

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• 4China has got a good _______ for fighting against the flu with its careful and smooth organization.

  A.knowledge

  B.influence

  C.reputation

  D.impression

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• 5But the unpleasant feeling of coldness disappeared at the _______ of his students pouring out of their classroom to give him a warm, wordless welcome.

  A.sight

  B.scene

  C.view

  D.sign

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• 6The first performance of the musical play “The Sound of Music” aroused ________ in audience.

  A.affection

  B.appreciation

  C.enthusiasm

  D.influence

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• 7He made a great __________ to the success of the project.

  A.contribution

  B.progress

  C.distinction

  D.conclusion

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• 8There is ______ in our office that when it is somebody's birthday, they bring in a cake for us all to share.

  A.balance

  B.tradition

  C.concern

  D.relationship

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