2017年12月英语四级阅读答案：试卷一仔细阅读1

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.

2017年12月英语四级答案汇总

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