Many types of rock are ________ from volcanoes as solid, fragmentary material.

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• 1He raised his eyebrows and stuck his head forward and ________ it in a single nod, a gesture boys used then for O.K. when they were pleased.

  A.shrugged

  B.tugged

  C.jerked

  D.twisted

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• 2The ball ________ two or three times before rolling down the slope.

  A.swayed

  B.bounced

  C.hopped

  D.darted

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• 3This new laser printer is ________ with all leading software.

  A.comparable

  B.competitive

  C.compatible

  D.cooperative

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• 4The results are hardly ________; he cannot believe they are accurate.

  A.credible

  B.contrary

  C.critical

  D.crucial

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• 5I bought an alarm clock with a(n) ________ dial, which can be seen clearly in the dark.

  A.supersonic

  B.luminous

  C.audible

  D.amplified

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• 6With prices ________ so much, it is difficult for the school to plan a budget.

  A.vibrating

  B.fluctuating

  C.fluttering

  D.swinging

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• 7The person who ________ this type of approach for doing research deserves our praise.

  A.originated

  B.speculated

  C.generated

  D.manufactured

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• 8________ that the demand for power continues to rise at the current rate, it will not be long before traditional sources become inadequate.

  A.Concerning

  B.Ascertaining

  C.Assuming

  D.Regarding

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• 9Her jewelry ________ under the spotlights and she became the dominant figure at the ball.

  A.glared

  B.glittered

  C.blazed

  D.dazzled

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• 10Connie was told that if she worked too hard, her health would ________.

  A.deteriorate

  B.descend

  C.degrade

  D.decay

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