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
52
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
Youngwomenwhotakepartinbeautycontests(比赛)arehelpingtokeepalivean
Helearnsinaschool.[br]HepreparesMealsintherestaurant.F根据句意“他在餐馆里准备食物”,
()就业办公室()研究生部[br]()大学书店()学生会P、M
公司里,各党支部要吸收新党员,应先进行政审。政审由()负责,党支部要形成政审报告
用于两个电压等级之间交换电能的变压器称为()A.主变压器 B.联
()productsoftenfeaturegameswithle
根据《房屋建筑与装饰工程工程量计算规范》(GB50854—2013),关于油漆
暑温的治则是A.清暑益气和中 B.滋养肺胃之阴 C.清泄暑热 D.清暑益气
根据《施工合同标准文本》的规定,以下有关监理人的说法中,错误的是()。A.
以下各项内容中属于综合评估比较表但不属于价格比较一览表的是()。A.投标人的投
最新回复
(
0
)