首页
登录
职称英语
A new high-performance contact lens under development at the department for
A new high-performance contact lens under development at the department for
游客
2024-03-31
30
管理
问题
A new high-performance contact lens under development at the department for applied physics at the University of Heidelberg will not only correct ordinary vision defects but will enhance normal night vision as much as five times, making people’s vision sharper than that of cats.
Bille and his team work with an optical instrument called an active mirror—a device used in astronomical telescopes to spot newly emerging stars and far distant galaxies. Connected to a wave-front sensor that tracks and measures the course of a laser beam into the eye and back, the aluminum mirror detects the deficiencies of the cornea, the transparent protective layer covering the lens of the human eye. The highly precise data from the two instruments—which, Bille hopes, will one day be found at the opticians(眼镜商)all over the world—serve as a basis for the production of completely individualized contact lenses that correct and enhance the wearer’s vision.
By day, Bille’s contact lenses will focus rays of light so accurately on the retina(视网膜)that the image of a small leaf or the outline of a far distant tree will be formed with a sharpness that surpasses that of conventional vision aids by almost half a diopter(屈光度). At night, the lenses have an even greater potential. "Because the new lens—in contrast to the already existing ones—also works when it’s dark and the pupil is wide open," says Bille, "lens wearers will be able to identify a face at a distance of 100 meters"—80 meters farther than they would normally be able to see. In his experiments night vision was enhanced by an even greater factor: in semi-darkness, test subjects could see up to 15 times better than without the lenses.
Bille’s lenses are expected to reach the market in the year 30, and one tentative plan is to use the Internet to transmit information on patients’ visual defects from the optician to the manufacturer, who will then produce and mail the contact lenses within a couple of days. The physicist expects the lenses to cost about a dollar a pair, about the same as conventional one-day disposable lenses. [br] According to Bille, with the new lenses the wearer’s vision _____.
选项
A、will be sharper by a much greater degree at night than in the daytime
B、can be better improved in the daytime than at night
C、may be broadened about 15 times than without them
D、will be far better at night than in the daytime
答案
A
解析
第3段最后一句提到“在他的实验中,夜间视力提高的倍数更大”。A中的by a much greater degree是原文by an even greater factor的近义改写,故选A。
转载请注明原文地址:https://tihaiku.com/zcyy/3534179.html
相关试题推荐
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
“西部大开发”(WesternDevelopment)是中国促进经济发展的一项重要政策。自从实行改革开放的政策以来,尤其是中国东南沿海城市的经济特区(
可持续发展sustainabledevelopment
持续、快速和健康的经济发展sustained,rapidandsoundeconomicdevelopment
随机试题
Becauseofthe______noiseoftrafficIcouldn’tgettosleeplastnight.A、prog
Ofallthelessonstaughtbythefinancialcrisis,themostpersonalhasbee
WheredidGabrielaMistralstartherteachingcareer?[br][originaltext][1
WhichoneisTed’sfavoritegirl?[br][originaltext]M:Hey,Jane,isJennycom
《建设工程质量管理条例》中对设计单位所设定的义务有()。Ⅰ.设计单位应当就审
金某(15周岁)在课间因小事与同学沈某发生争执,金某一拳击中沈某头部,致使沈某倒
关于电泳基本原理的叙述正确的是A:电泳是溶液中带正负电粒子之间的引力产生的移动
某初产妇,一般情况良好,胎儿足月,左枕前位,胎心140次/分,规律宫缩已17小时
(2015年真题)某期货公司财务部工作人员任某挪用客户300万元期货保证金,为其
患者李某,男,45岁,近日感觉头痛、头晕、心悸,眼花、耳鸣、失眠、乏力等症状,血
最新回复
(
0
)