首页
登录
从业资格
Many people believe the glare from snow
Many people believe the glare from snow
练习题库
2022-08-02
44
问题
Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light". The United States Army has now determined that glare from snow does not cause snow- blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain. So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature offsets this irritation by producing more and fluid which covers the eyeball. The fluid covers the eyeball in increasing quantity until vision blurs,then is observed, and the result is total, even though temporary, snow-blindness. Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome. The scouts shake snow from evergreen bushes in order to_________.A. give the men behind something to seeB. beautify the landscapeC. warm themselves in the coldD. prevent the men behind from losing their way
选项
A. give the men behind something to see
B. beautify the landscape
C. warm themselves in the cold
D. prevent the men behind from losing their way
答案
A
解析
根据第三段“The men following Can then see somethin9.Their gaze is arrested”可知,侦查
员摇落树上的雪是为了使后面的部队有物体可以聚焦。从而避免雪盲症的发生,故选A。
转载请注明原文地址:https://tihaiku.com/congyezige/797575.html
本试题收录于:
银行招聘职业能力测验题库银行招聘考试分类
银行招聘职业能力测验
银行招聘考试
相关试题推荐
Fewerthan14000peopleperishedinUSa
资料:Inasurvey,peoplewereaskedtochoo
资料:It'ssocommontohearpeoplesay,“I
资料:It'ssocommontohearpeoplesay,“I
资料:Peoplediffergreatlyintheirreadin
资料:Peoplediffergreatlyintheirreadin
资料:Mostyoungpeopleenjoysomeformof
资料:Mostyoungpeopleenjoysomeformof
资料:“Ourcarsareforpeoplewhowantsom
资料:“Ourcarsareforpeoplewhowantsom
随机试题
中国的饮食方式正在发生许多变化。众所周知,中国的饮食文化具有悠久的历史。人们采用肉、蔬菜、豆制品等能做出各种美味食品,但往往耗时多。这一点与快节奏的现代
[originaltext]M:Sure.Peopleoftenhavedifferentwaysoflearningandapproac
Oneofthemostcriticalproblems【C1】_____blackandotherminorityAmerican
TheOlympicGames______in776B.C.inOlympia,asmalltowninGreece.A、origina
支付宝(Alipay)是中国最大的第三方在线支付平台,由阿里巴巴集团(AlibabaGroup)于2004年创建。截至2012年底,支付宝拥有用户超过
7October,2008HuaxiaIndustrialCorp.903MinhuaRoadGuangzhouP.R.ChinaAt
超超临界锅炉的炉内温度不低于(),炉内蒸汽压力为()以上。A.593
萧伯纳的代表剧作有()A.《圣女贞德》 B.《巴巴拉少校》 C.《阴谋与爱情
下列出票日期填写正确的是()。A.2008年3月12日 B.贰零零捌年叁月壹
某上市公司职业经理人在任职期间不断提高在职消费,损害股东利益。这一现象所揭示的公
最新回复
(
0
)