首页
登录
职称英语
Many people believe the glare from snow causes snowblindness. Yet, dark glas
Many people believe the glare from snow causes snowblindness. Yet, dark glas
游客
2023-11-17
55
管理
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. [br] 【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://tihaiku.com/zcyy/3195567.html
相关试题推荐
Weworktomakemoney,butit’sa______thatpeoplewhoworkhardandlongofte
Twohundredyearsago,peopleusedto[br][originaltext]Twohundredyearsa
Somepeopleeither______avoidquestionsofrightandwrongorjustremainneutr
The______oftheflood,whichcausedthousandsofpeopletolosetheirhouses,
Culturalnormssocompletelysurroundpeople,sopermeatethoughtandacti
Culturalnormssocompletelysurroundpeople,sopermeatethoughtandacti
Culturalnormssocompletelysurroundpeople,sopermeatethoughtandacti
Culturalnormssocompletelysurroundpeople,sopermeatethoughtandacti
WhenRicewaseighteenhe______goingaroundwithastrangesetofpeopleands
Steven’sclose______tohisbrothermadepeoplemistakethemforoneanother.A、
随机试题
READINGPASSAGE1Youshouldspend20minutesonQuestions1-13,whicharebased
HowShouldTeachersBeRewarded?[A]
ThisfilmdocumentsthePresidentTeddyRoosevelt’s______towhatisnowKenya
[originaltext]Criticismofresearchlaysasignificantfoundationforfuture
患者,6岁,因溺水心搏、呼吸骤停,送急诊室,护士不需实施的措施是A.开放气道
假设某公司本年每股将派发股利0.2元,以后每年的股利按4%递增,投资必要报酬率为
患者,男,63岁。痢下赤白清稀,无腥臭,滑脱不禁,肛门坠胀,腹部隐痛,形寒畏冷,
A.沉降分离B.滤过分离C.旋转分离D.吸附分离E.滤过分离将混悬液通过多孔介质
江西的()风景名胜区展示了独特花岗岩石和山峰。栩栩如生的花岗岩石与丰富的生
在设计阶段处理好()之间的关系,是咨询工程师的一项重要任务。A.投资、质
最新回复
(
0
)