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      2017年12月英語四級仔細閱讀答案(試卷一,46-50)

      來源:滬江

      答案

      46. D) In what way it can be beneficial.
      47. C) She got some idea from previous studies on birds and dolphins.
      48. A) She monitored the brain activity of participants sleeping in a new environment.
      49. C) She exposed her participants to two different stimuli.
      50. B) They tended to perceive irregular beeps as a threat.

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