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
外语
Many people believe the glare from snow causes snowblindness. Yet, dark glasses or not, they find themselves 【C1】______headaches
Many people believe the glare from snow causes snowblindness. Yet, dark glasses or not, they find themselves 【C1】______headaches
admin
2010-06-26
38
问题
Many people believe the glare from snow causes snowblindness. Yet, dark glasses or not, they find themselves 【C1】______headaches and watering eyes, and even snowblindness, when【C2】______ to several hours of "snow light".
The United States Army has now determined that glare from snow does not cause snowblindness in troops in a snow-covered country.【C3】______, a man’s eyes frequently find nothing to focus on in a broad【C4】______ of barren snow-covered terrain. So his gaze continually shifts and jumps back and【C5】______ over the entire landscape【C6】______ something to look at. Finding nothing, hour after hour, the eyes【C7】______stop searching and the eyeballs become 【C8】______ and the eye muscles ache. Nature【C9】______ this irritation by producing more fluid which covers the eyeball. The fluid covers the eyeball in increasing【C10】______until vision blurs, then is【C11】______, and the result is total, even though temporary, snowblindness.
Experiments【C12】______ the Army to a simple method of overcoming this problem. Scouts【C13】_____ of a main body of troops are trained to shake snow 【C14】______evergreen bushes, creating a dotted line as they cross completely snow-covered landscape.【C15】______ the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men【C16】______ can then see something. Their gaze is 【C17】______. Their eyes focus on a bush and having found something to see, stop 【C18】______the snow-blanketed landscape. By focusing their attention on one object 【C19】______,the men can cross the snow 【C20】______becoming hopelessly snowblind or lost. In this way the problem of crossing a solid white terrain is overcomed.
【C5】
选项
A、onwards
B、forward
C、fourth
D、forth
答案
D
解析
固定搭配题。back and forth为固定搭配,表示“来来回回”。
转载请注明原文地址:https://kaotiyun.com/show/IT1K777K
0
专业英语四级
相关试题推荐
Walkingisbelievedtobeoneofthebestwaysforapersonto______healthy.
MostpeoplebelievethattheIraqproblemis______amilitaryone.
Childrentendtorelyon______schoolfriendstokeepintouchwithschoolwork.
TowardaSmarterWebWiththegrowthoftheWeb,manypeoplehavecometoviewtheInternetasahandysourceofinformatio
ConcreteAnotherthingtorememberinconnectionwithconcreteisthatyouarenotallowedverymuchleewayforerrorsine
Thetypistcheckedthespellingcarefullyinorderto______allthespellingmistakes.
Whydoadultsbelievethatalcoholicawarenessprogramsteachyoungpeoplenottoover-drink?Recently,readinganarticleabout
"Ifwefailtoactnow,"saidTom,"we’llfindourselves______thislateron."
Howmanychaptersdidthespeakerfinishreading?
Yetthedifferenceintomeandlanguagemuststrikeus,sosoonasitisphilosophythatspeaks:thatchangeshouldremindusth
随机试题
"MoneyMattersonCampus"isarecentlyre-leasedstudyonfinancialliteracyamongyoungadults.Itsupportsprovidingstudents
小淋巴细胞性淋巴瘤的特点是
欲全部展现胸主动脉,其投射的最佳体位是
关于专利实施强制许可制度的以下判断中,哪一项是不正确的?()
夏季挂在西向窗口内侧的合金软百叶可以减少传入室内太阳辐射热的百分比约为()。
管桩基础可适用于各种土质的基底,尤其在()的自然条件下,不宜修建其他类型基础时,均可采用。
交易部负责基金产品的设计、募集和客户服务及持续营销等工作。()
个人征信系统的最基础产品是()。
小明的毕业论文分别请两位老师进行了审阅。每位老师分别通过Word的修订功能对该论文进行了修改。现在,小明需要将两份经过修订的文档合并为一份,最优的操作方法是()
BoxingmatcheswereverypopularinEnglandtwohundredyearsago.Inthosedays,boxersfoughtwithbare【B1】______forprizemo
最新回复
(
0
)