2017年全國大學英語四六級考試于12月16日進行，很多考生考完第一時間都想要檢測一下自己做題的正確率， 以下就是新文道教育給大家提供的英語四級真題中仔細閱讀第一篇的答案以及詳細解析。

Passage one

46. D. “in what way it can be beneficial”

根據題目中的定位詞(puzzling about)定位到第二段第二句“the puzzle was what benefit would be gained for it”和D選項“in what way it can be beneficial”是同義句替換。

47. C “she got some idea from previous studies on birds and dolphins

根據題目中的“learn about Dr. Yuka Sasaki doing his research”可定位到第二段第三句第四句 “she also knew from previous work conducted on .... this led her to wonder if people might be doing the same thing”可以得知她從previous work 里邊獲取一些想法。

48. A “she monitored the brain activity of participants sleeping in a new environment”

從第二段第五句和第六句“to take a closer look, her team...as they slept in the unfamiliar environment of ... the participants each slept...monitored with techniques that looked at the activity of their brains”可以得知選擇A選項。

49. C “she exposed her participants to two different stimuli”

第三段第一句后半部分“Dr Sasaki re-ran the experiment while...with a mix of regularly timed beeps of the same tone and irregular beeps of a different tone”可以得出答案C。

50. B “they tended to perceive irregular beeps as a threat”

根據文章最后一句“this is precisely what she found”可以得知答案出現在前一句，文章倒數第二句和C選項意思一樣。

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