首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
医学
Sleep is divided into periods of so-called REM sleep, characterized by rapid eye movements and dreaming, and longer periods of n
Sleep is divided into periods of so-called REM sleep, characterized by rapid eye movements and dreaming, and longer periods of n
admin
2018-05-06
64
问题
Sleep is divided into periods of so-called REM sleep, characterized by rapid eye movements and dreaming, and longer periods of non-REM sleep.【C1】______ kind of sleep is at all well-understood, but REM sleep is【C2】______ to serve some restorative function of the brain. The purpose of non-REM sleep is even more【C3】______ . The new experiments, such as those【C4】______ for the first time at a recent meeting of the Society for Sleep Research in Minneapolis, suggest fascinating explanations【C5】______ of non-REM sleep.
For example, it has long been known that total sleep【C6】______ is 100 percent fatal to rats, yet,【C7】______ examination of the dead bodies, the animals look completely normal. A researcher has now【C8】______ the mystery of why the animals die. The rats【C9】______ bacterial infections of the blood,【C10】______ their immune systems—the self-protecting mechanism against disease—had crashed.
【C7】
选项
A、upon
B、by
C、through
D、with
答案
A
解析
本题考查介词辨析。根据上下文,此句意为通过研究老鼠的尸体,人们发现这些动物看上去完全正常,可以推断此处应为“借助,通过”之意,但其他三个选项的介词表示“借助”的含义时,通常主语为人,故选A。
转载请注明原文地址:https://kaotiyun.com/show/DqT3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
Sunnyperiodswillbeinterspersedwithoccasionalshowers.
Seanalivedintheinpatienthospiceunitformorethanamonth,farlongerthananyonewouldhavepredicted,sustainedonlyon
Seanalivedintheinpatienthospiceunitformorethanamonth,farlongerthananyonewouldhavepredicted,sustainedonlyon
Theprojectwashamperedbyaconstantstreamofvisitors.
A、Tohaveacolonoscopy.B、ToseekasecondopinionC、Tobeputonchemotherapy.D、Tohavehisbowelremoved.C根据女士的话It’stoodi
Theremaybealinkbetweencreativityandmentaldisorders,butitisprobablynotinthewaythatyouthink.Thereisawidesp
Here’syetanothertoloseweight.Heavierpeoplearemorelikelytobekilledorseriouslyinjuredincaraccidentsthanlighte
Thecombinedevidenceofhistoryandecologyseemstosupportonegeneraldeduction:thelessviolentthemanmadechanges,the
A、Exercisemoreandeatless.B、LiftWeights.C、Workthemusclesusually.D、Havealongrunoccasionally.D对抗新陈代谢放缓的办法并没有提到“偶尔长跑
Inhalingpureoxygenfor30secondscandoubleyourrecallofwhathappensinthenextcoupleofminutes,accordingtoresearche
随机试题
电动汽车动力性能试验方法规定车辆的预热方法为:试验车辆以制造厂估计的30min最高车速的80%速度行驶()km,使电动机及传动系统预热。
邓小平关于社会主义本质的论断中,体现人民利益方面的目标是
位于延髓的核团是()
DaveneededtopackforSaturday’sfishingtrip.Hewentintohishallcloset,【R6】______hehadmorethan20rodsandreels.Nowad
连续多普勒取样线上的符号表示:
银行贷前管理阶段的主要工作包括:()。
程序设计语言可划分为低级语言和高级语言两大类。与低级语言相比,用高级语言开发的程序的特点是(76),但经常全部或部分地使用低级语言在的场合是(77)。在低级语言中,汇编语言与机器语言十分接近,它使用了(78)来提高程序的可读性。高级语言有许多种类,其中,P
下列不属于软件调试技术的是______。
下列说法中,正确的是
HarbourDrive
最新回复
(
0
)