【判断题】
遵守宪法、法律,坚持依法行政的情况是党内监督的重点内容之一
A. 对
B. 错
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答案
A
解析
暂无解析
相关试题
【单选题】
Read this pasaage and answer the five questions
That people often experience trouble sleeping in a different bed in unfamiliar surroundings 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 what 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 of 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 if 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.
Question1:
What did researchers find puzzling about the first-night effect?
A. What role it has played in evolution.
B. To what extent it can trouble people.
C. What circumstances may trigger it.
D. In what way it can be beneficial. .
【单选题】
Question2:
What do we learn about Dr. Yuka Sasaki doing her research?
A. She found birds and dolphins remain alert while asleep.
B. She found birds and dolphins sleep in much the same way.
C. She got some idea from previous studies on birds and dolphins.
D. She conducted studies on birds’ and dolphins’ sleeping patterns.
【单选题】
在产品只计算材料成本,主要适合于___的产品。
A. 月末在产品数量较大,但各月大体相同
B. 定额资料比较完整
C. 直接材料费用在产品成本中所占比重较大
D. 工资和其他费用发生比较均衡
【单选题】
将上一步骤转入的半成品成本全部计入下一步骤成本计算单中的“自制半成品或“原材料”成本项目,这种成本结转方式称为___。
A. 分项结转
B. 平行结转
C. 成本还原
D. 综合结转
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“第三宇宙速度”被称为___,速度为(B)。
A. 脱离速度 16.7km/s
B. 逃逸速度 16.7km/s
C. 脱离速度 11.2km/s
D. 逃逸速度 11.2km/s
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在南极上空,臭氧不断地减少,并形成了臭氧空洞,这是___。
A. 太阳的辐射太强烈的原因
B. 南极的气候的原因
C. 人们没有阻止的原因
D. 人类活动中排放大量的含氯化合物的缘故
【单选题】
太阳耀眼明亮,相对地,月光就显得那么柔和、暗淡,月光之所以没有太阳光线强,主要是因为___。
A. 月亮离地球比较远
B. 月亮的能量比较小
C. 大气层阻挡的结果
D. 月亮本身不发光,它反射的是太阳的光
【单选题】
下列关于计算机通讯技术的表述不正确的是___。
A. Web2.0的用户既是网站内容的浏览者,也是网站内容的制造者
B. 3G相对于2G的优势在于传输声音和数据的速度更快
C. 物联网是在互联网的基础上,实现人与物品之间的信息交换
D. 进入纳米时代,新材料研究成为计算机芯片发展的关键
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在细胞分裂过程中,DNA分子双螺旋开始分开,按照碱基配对原则,分别合成出与母链的这支单螺旋互补的子链,这一新一旧两股螺旋形成的子链不断延伸,形成了新的DNA分子,这一过程被称为___。
A. 半保留复制
B. 基因表达
C. 有丝分裂
D. 基因突变
【单选题】
我们行进在公园里时,经常发现草坪上有爱心提示牌:“请勿践踏,爱护我”。这是因为经常践踏草坪会造成土壤板结,从而影响草的生长。其中的科学道理是___
A. 植物缺少无机盐,影响生长
B. 植物缺少水,影响光合作用
C. 土壤缺少氧气,影响根的呼吸
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【单选题】
熊在地球上分布极为广泛,但是南极是没有熊的。其原因是___。
A. 在熊这个物种出现之前,南极洲就与其他大陆板块脱离
B. 南极洲的气候条件极为恶劣,熊不能适应,无法生存
C. 南极洲生物构成不能为熊提供足够的食物,因而熊无法生存
D. 南极洲曾发生过重大的地质变化,造成南极洲熊的灭绝
【单选题】
沙漠中生长的植物其叶子都比较小,而根却极深,其原因主要是___。
A. 沙漠中降雨量少,气候干旱,叶小是为了减少蒸发,根深利于吸收水分
B. 沙漠中生长的植物品种都是那种叶小根深的
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【单选题】
成语是汉语中人们熟识并广泛使用很久的词组或短句,其中蕴含丰富的趣味生物学知识。下列能说明“生物对环境是有影响的”成语是___
A. 风声鹤唳,草木皆兵
B. 千里之堤,溃于蚁穴
C. 螳螂捕蝉,黄雀在后
D. 不入虎穴,焉得虎子
【单选题】
多数鱼类背部发黑、腹部发白,其原因是___。
A. 长期进化形成的保护色
B. 背部比腹部接受光线多,导致色素沉淀
C. 背部比腹部粘膜厚,吸收光线多
D. 背部鱼鳞多,吸收光线多