2019年12月的大学英语六级考试即将如期而至，各位准备参加考试的同学现在的备考应该是仍在如火如荼地进行中：有人在狂刷单词，有人在不停地刷真题，各有各的复习安排。毫无疑问，单词基础很重要，历年真题的练习也非常必要，但除此之外，希望各位同学能有差别地去准备试卷上不同模块的备考，认真总结解题思路，这很可能会对各位起到锦上添花的效果。今天文都四六级的为大家分享2019年12月英语六级阅读理解选词填空3，希望对您有所帮助。
英语六级阅读理解选词填空3
Half of your brain stays alert and prepared for danger when you sleep in a new place, a study has revealed. This phenomenon is often __26__ to as the "first-night-effect". Researchers from Brown University found that a network in the left hemisphere of the brain "remained more active" than the network in the right side of the brain. Playing sounds into the right ears (stimulating the left hemisphere) of __27__ was more likely to wake them up than if the noises were played into their left ear.
It was __28__ observed that the left side of the brain was more active during deep sleep. When the researchers repeated the laboratory experiment on the second and third nights they found the left hemisphere could not be stimulated in the same way during deep sleep. The researchers explained that the study demonstrated when we are in a __29__ environment the brain partly remains alert so that humans can defend themselves against any __30__ danger.
The researchers believe this is the first time that the "first-night-effect" of different brain states has been __31__ in humans. It isn't, however, the first time it has ever been seen. Some animal __32__ also display this phenomenon. For example, dolphins, as well as other __33__ animals, shut down one hemisphere of the brain when they go to sleep. A previous study noted that dolphins always __34__ control their breathing. Without keeping the brain active while sleeping, they would probably drown. But, as the human study suggest, another reason for dolphins keeping their eyes open during sleep is that they can look out for __35__ while asleep. It also keeps their physiological processes working.
A. classified
B. consciously
C. dramatically
D. exotic
E. identified
F. inherent
G. marine
H. novel
I. potential
J. predators
K. referred
L. species
M. specifically
N. varieties
O. volunteers
六级阅读理解参考答案：
(26)K. referred
(27)O. volunteers
(28)M. specifically
(29)H. novel
(30)I. potential
(31)E. identified
(32)L. species
(33)G. marine
(34)B. consciously
(35)J. predators
以上就是文都四六级网为大家提供的2019年12月英语六级阅读理解模块的备考指导，希望各位同学能有所收获，找到正确有效的解题方法。
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