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
2023-08-16
48
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/2932248.html
相关试题推荐
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
Internationalgovernments’inactionconcerningsustainabledevelopmentiscl
Internationalgovernments’inactionconcerningsustainabledevelopmentiscl
Internationalgovernments’inactionconcerningsustainabledevelopmentiscl
青藏铁路(Qinghai-TibetRailway)是西部大开发(WesternDevelopmentProgram)的标志性工程,是中国新世纪四
随机试题
Hedemandedthatweexplainwhythingswentwrong,______?A、hadn’tweB、hadn’the
Accordingtotheschedule,thetouringpartywillvisittheSummerPalaceand
H根据Florida、doingbusinesswithdistrictsandstates和forresearch定位到H段。该段以佛罗里达虚拟学
陡峭的steep
国家规定不得归档的材料,禁止擅自()A.保管 B.保存 C.归档 D.收
凡属“见证点”的施工作业,如()等,施工方必须在该项作业开始前48h,书面通知
下列关于信号检测论ROC曲线的描述,正确的是A.β值的改变独立于d'值的变化
A.3年 B.5年 C.不超过5年 D.7年对药品生产企业生产的新药品种设
千百度公司作为拥有强大互联网基础的领先AI公司,在2020年11月17日,以36
FIDIC合同中,合同通用条件的条款中规定,可以给承包商合理延长合同工期的条件
最新回复
(
0
)