首页
登录
职称英语
Many people believe the glare from snow causes snow blindness. Yet, with dar
Many people believe the glare from snow causes snow blindness. Yet, with dar
游客
2024-02-06
27
管理
问题
Many people believe the glare from snow causes snow blindness. Yet, with 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 the 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 a snow-covered area. 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 muscle aches. Nature balances this annoyance by producing more and more liquid which covers the eyeballs. The liquid covers the eyeballs in increasing quantity until vision blurs. 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 searching through the snow-blanketed landscape. By focusing their attention on one object at a time, the man can cross the snow without becoming hopelessly snow blind or lost. In this way the problem of crossing a solid white area is overcomed. [br] When the eyes are sore, tears are produced to______.
选项
A、clear the vision
B、remedy snow blindness
C、ease this annoyance
D、loosen the muscles
答案
C
解析
细节题。短文第二段倒数第三句指出Nature balances this annoyance by producing more and more liquid which covers the eyeballs.由此可知在这种情况下,由于人身体的自然反应,眼睛会分泌液体(眼泪)来缓解这种不舒服。故选项C正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3428111.html
相关试题推荐
[originaltext]M:Ican’tbelievemyliteratureteacherismakingmereadPride
[originaltext]M:Ican’tbelievemyliteratureteacherismakingmereadPride
[originaltext]Peopleallovertheworldtodayarebeginningtohearandlea
[originaltext]Peopleallovertheworldtodayarebeginningtohearandlea
[originaltext]Peopleallovertheworldtodayarebeginningtohearandlea
Fightunhealthyfood,notfatpeopleIt’shardlybreakin
Fightunhealthyfood,notfatpeopleIt’shardlybreakin
Fightunhealthyfood,notfatpeopleIt’shardlybreakin
Fightunhealthyfood,notfatpeopleIt’shardlybreakin
Fightunhealthyfood,notfatpeopleIt’shardlybreakin
随机试题
下列属于肾炎综合征的是()。A.蛋白尿 B.血尿 C.高血压 D.肾功能
已知f(x)和g(x)在x=0点的某邻域内连续,且x→0时f(x)是g(x)的高
目前国内最常见的细菌性痢疾病原菌是:A.福氏痢疾杆菌 B.宋内痢疾杆菌 C.
治理地表水和地下水的原则:防止地表水流边坡表面裂隙中;采用疏干措施降低潜在破坏面
A.期门 B.大敦 C.隐白 D.章门 E.曲泉常用于治疗阴痒、遗精、小
高压熔断器更换应使用参数相同的熔断器。
教育行政部门取缔了一批违反国家规定私自招收未成年学生的私立学校,教育行政部门这一
我国政府预算改革的目标是要建立全口径预算体系,包括()。A.一般公共预算 B
收取公用事业费事宜采取()结算方式。 A.委托付款B.托收承付C.商业汇
患者,男,25岁,双下肢乏力伴尿潴留10天就诊.查体:双下肢肌力Ⅲ级,脐以下感觉
最新回复
(
0
)