这是一篇说明文,心理学家们将人们睡在陌生的床上通常无法入睡的现象称为“第一晚”效应,文章内容对睡眠环境和研究者的调查与结论进行阐述。2.D细节理解题。根据第二段第二句 The puzzle was what benefit would be gained from itwhen performance might be affected the following day. nn33.A细节理解题。根据第三段的第一句 To take a closer look, her team studied3 5 healthyeople as they slept in the unfamiliar environment of the university s Department ofPsychological Sciences可知34.C细节理解题。根据最后一段第一句 Curious if the left hemispheres were indeedremaining awake to process information detected in the surrounding environment, Dr. Sasakire-ran the experiment while presenting the sleeping as35.B推理判断题。根据最后一段第二句 She worked out that, if the left hemisphere wasstaying alert in a strange environment, then it would react to the irregular beeps by stirringpeople from sleep and would ignore the regularly timed ones. n]5nl

15.B〖解析】由于月球无大气层,月表“风暴洋”着陆区太阳辐射强,昼夜温差大;月球表面无液态水分布;熔岩平原地势起伏小16.B【解析】结合该日四子王旗着陆点的昼长计算出日出地方时约为7时25分,四子王旗与东八区中央经线(120°E)经度相差约8.5°,地方时晚34分钟。返回器着陆时着陆点的地方时为1时25分,因此距日出还差约6小时。

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