皮皮学,免费搜题
登录
搜题
【单选题】
Directions: The passage is followed by some questions with four choices marked A), B), C) and D). You should decide on the best choice. Questions 1 to 5 are based on the following passage. That people often experience trouble sleeping in a different bed in unfamiliar surrounding is a phenomenon known as the “ first-night ” effect. If a person stays in the same room the following night they tend to sleep more soundly. Yuka Sasaki and her colleagues at Brown University set out to investigate the origins of this effect. Dr. Sasaki knew the first-night effect probably has something to do with how humans evolved. The puzzle was that benefit would be gained from it when performance might be affected the following day. She also knew from previous work conducted on birds and dolphins that these animals put half of their brains to sleep at a time so that they can rest while remaining alert enough to avoid predators (捕食者) . This led her to wonder if people might be doing the same thing. To take a closer look, her team studied 35 healthy people as they slept in the unfamiliar environment of the university ’ s Department of Psychological Sciences. The participants each slept in the department for two nights and were carefully monitored with techniques that looked at the activity pf their brains. Dr. Sasaki found, as expected, the participants slept less well on their first night than they did on their second, taking more than twice as long to fall asleep and sleeping less overall. During deep sleep, the participants ’ brains behaved in a similar manner seen in birds and dolphins. On the first night only, the left hemispheres (半球) of their brains did not sleep nearly as deeply as their right hemispheres did. Curious id the left hemispheres were indeed remaining awake to process information detected in the surrounding environment, Dr. Sasaki re-ran the experiment while presenting the sleeping participants with a mix of regularly timed beeps (蜂鸣声) of the same tone and irregular beeps of a different tone during the night. She worked out that, if the left hemisphere was staying alert to keep guard in a strange environment, then it would react to the irregular beeps by stirring people from sleep and would ignore the regularly timed ones. This is precisely what she found. What did researchers find puzzling about the first-night effect?
A.
To what extent it can trouble people.
B.
What role it has played in evolution.
C.
What circumstances may trigger it.
D.
In what way it can be beneficial.
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】辛亥革命后、北伐战争后、抗日战争胜利后,中国出现了三次政治民主化的机会,但均擦肩而过,其根本原因是()
A.
民主政治不适合中国人的习惯
B.
中国没有政治民主化的历史发展趋势
C.
半殖民地半封建社会缺乏民主化的基础
D.
帝国主义的阻挠
【多选题】家长会的“变异”,家长会变成了 。
A.
研讨会
B.
批判会
C.
成绩发布会
D.
培训会
【单选题】设某商品的需求函数为 ,则当价格p满足条件( )时,发生高弹性
A.
p>5
B.
p<5< /div>
C.
p=5
D.
A、B、C都不对
【单选题】-----キムさんは__ですか。 -----いいえ、社員ではありません。
A.
社員
B.
学生
C.
日本人
D.
中国人
【单选题】自信心是桌面,能力就是桌腿。其中最粗、最壮、最中心的那根支柱是你的()
A.
爱好。
B.
特长。
C.
事业。
D.
健康。
【简答题】キムさんは中国人ですか。 ___、中国人ではありません。
【单选题】英国资产阶级革命是人类历史上资本主义制度对封建制度的一次重大胜利,推动了世界历史发展的进程,是世界近代史的开端。这次资产阶级革命爆发的根本原因是( )
A.
欧洲的商贸中心转移到大西洋沿岸
B.
文艺复兴运动猛烈抨击了专制统治
C.
封建制度严重阻碍资本主义的发展
D.
殖民掠夺阻碍了资本主义的发展
【单选题】10 自信心是桌面,能力就是桌腿。其中最粗、最壮、最中心的那根支柱是你的()
A.
爱好。
B.
特长。
C.
事业。
D.
健康。
【单选题】不适合半坐卧位的患者是:
A.
腹部手术后患者
B.
心肺疾病患者
C.
腹腔有炎症患者
D.
休克患者
E.
面部手术后患者
【多选题】下列属于色彩变异的有()。
A.
不过那时候家庭会议只会不议——一般成员不能开口,只听家长训话
B.
酒店里的人大笑了,阿 Q看见自己的“勋业”得到了赏识,便愈加兴高采烈起来,“和尚动得,我动不得”,他扭住伊德面颊。
C.
单海婴这家伙却非常顽皮,两三日前竟发表了颇为反动的宣言,说:“这种爸爸,什么爸爸!”真难办。
D.
连长又看看张振武的脚, 那双大头鞋 “空前绝后” ,前边露着脚指头, 后边露出脚后跟。
E.
他有次往饺子馅里放了两把盐, 把大伙咸的饺子汤不够喝, 最后司务长又烧了一锅开水,供大家稀释体内的氯化钠。
相关题目:
【单选题】设某商品的需求函数为 ,则当价格p满足条件( )时,发生高弹性
关于我们
免责声明
版本记录
© 2019 pipixue.com 京ICP备20000060号-6