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
2024-04-03
37
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/3539171.html
相关试题推荐
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
随机试题
NiagaraFallsisagreattourist(attract)______,drawingmillionsofvisitorsev
(1)Abouttwo-thirdsoftheworld’spopulationisexpectedtoliveincities
分子杂交试验不能用于()A.单链DNA分子之间的杂交 B.单链DNA与R
尺寸为240mm×115mm×53mm的砌块,其烘干质量为2550g,磨成细粉后
某市政工程公司的施工项目部负责某污水处理厂工程施工,该污水处理厂工程主要包括泵站
可引起肝脓肿的原虫是A.蛔虫B.溶组织内阿米巴C.蓝氏贾第鞭毛虫D.杜氏利士曼原
某住宅楼建于2000年,目前各类设施设备完好,能保证安全正常的居住使用。该住宅楼
四个相同的盒子里各有3个球,其中一个盒子里放了3个红球,一个盒子里放了2个红球1
患者,62岁。上腹部剧痛12小时,有胃溃疡病史15年。查体:血压92/60mmH
执业药师承接患者咨询的内容主要有A.用药方法 B.用药剂量 C.用药不良反应
最新回复
(
0
)