首页
登录
职称英语
Sleep is very ancient. In the electroencephalographic (脑电图仪的) sense we share
Sleep is very ancient. In the electroencephalographic (脑电图仪的) sense we share
游客
2023-07-02
44
管理
问题
Sleep is very ancient. In the electroencephalographic (脑电图仪的) sense we share it with all the primates (灵长类动物) and almost all the other mammals and birds: it may extend back as far as the reptiles (爬行动物).
There is some evidence that the two types of sleep, dreaming and dreamless, depend on the life style of the animal, and that predators (食肉动物) are statistically much more likely to dream than prey, which are in turn much more likely to experience dreamless sleep. In dream sleep, the animal is powerfully immobilized (使固定不动) and remarkably unresponsive to external stimuli. Dreamless sleep is much shallower, and we have all witnessed cats or dogs cocking their ears to a sound when apparently fast asleep. The fact that deep dream sleep is rare among prey today seems clearly to be a product of natural selection, and it makes sense that today, when sleep is highly evolved, the stupid animals are less frequently immobilized by deep sleep than the smart ones. But why should they sleep deeply at all? Why should a state of such deep immobilization ever have evolved?
Perhaps one useful hint about the original function of sleep is to be found in the fact that dolphins and whales and aquatic mammals in general seem to sleep very little. There is, by and large, no place to hide in the ocean. Could it be that, rather than increasing an animal’s vulnerability, Ray Meddis of London University has suggested this to be the case. It is conceivable that animals that are too stupid to be quite on their own initiative are, during periods of high risk, immobilized by the implacable arm of sleep. The point seems particularly clear for the young of predatory animals. This is an interesting notion and probably at least partly true. [br] Predators are _____.
选项
A、able to prey even when they are in deep dream sleep
B、more likely to experience dream sleep
C、incapable of preying when immobilized by dreamless sleep
D、good at preying on stupid animals
答案
B
解析
根据第2段第1句第4个分句可知应选B。A的内容与该段第2句相悖;C中dreamless sleep应为dream sleep。D的内容文中没有涉及。
转载请注明原文地址:https://tihaiku.com/zcyy/2801617.html
相关试题推荐
Sleepisveryancient.Intheelectroencephalographic(脑电图仪的)senseweshare
Sleepisveryancient.Intheelectroencephalographic(脑电图仪的)senseweshare
Sleepisveryancient.Intheelectroencephalographic(脑电图仪的)senseweshare
Sleepisveryancient.Intheelectroencephalographic(脑电图仪的)senseweshare
Sleepisveryancient.Intheelectroencephalographic(脑电图仪的)senseweshare
Sleepisveryancient.Intheelectroencephalographic(脑电图仪的)senseweshare
Sleepisveryancient.Intheelectroencephalographic(脑电图仪的)senseweshare
Sleepisveryancient.Intheelectroencephalographic(脑电图仪的)senseweshare
Sleepisveryancient.Intheelectroencephalographic(脑电图仪的)senseweshare
Sleepisveryancient.Intheelectroencephalographic(脑电图仪的)senseweshare
随机试题
C此处需要填入修饰shifted的副词,说明对招聘过程中权力平衡改变的程度。根据后文用usedto和now对比说明公司变化的具体情况,可知这种改变是较大的,故
[originaltext]W:Lee,whereareyougoing?M:Tothepostoffice,Sarah.Iamg
Heisadisgustingmanwhoisfondof________________(向别人的妻子献殷勤).payingcompl
在编定活动实践计划中,活动计划的内容一般包括活动目标、()、过程安排、()。
中国文物管理的原则与方式是()A.采取分级管理 B.采取多级管理 C.采取
颌位关系记录是用来记录A.垂直距离和正中关系位 B.面下1/3高度 C.水平
计量市场风险时,计算VaR值方法通常需要采用压力测试进行补充,因为( )。A.
人口统计变量和( )是房地产市场分析中应该选择调查的重要数据。A、环境变量
A.三环类抗抑郁药B.非甾体类抗炎药物C.抗惊厥类药物D.苯巴比妥类药物E.阿片
急性胰腺炎发生DIC的机制是A.通过钙与组织因子形成复合物B.激活凝血酶原,促进
最新回复
(
0
)