- 1、本文档共7页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
- 5、该文档为VIP文档,如果想要下载,成为VIP会员后,下载免费。
- 6、成为VIP后,下载本文档将扣除1次下载权益。下载后,不支持退款、换文档。如有疑问请联系我们。
- 7、成为VIP后,您将拥有八大权益,权益包括:VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 8、VIP文档为合作方或网友上传,每下载1次, 网站将根据用户上传文档的质量评分、类型等,对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
六级2012考试试题六级2012考试试题
2012年六级辅导课期末考试
格式要求:
请用A4规格 纸作答并提交,不接受电子版和打印版;
每道题请写好 题号,按顺序作答;
先作答阅读再作答作文,并于6月20日前交各班班长,由各班班长统一交给任课老师
整张纸卷请同学认真按照60分钟时间作答,不能超时
将姓名和学号及班级专业写在整张答题纸上方,否则任课老师无法确实,则后果自负,谢谢大家配合。
Passage One
Questions 1 to 5 are based on the following passage:
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. They 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 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
您可能关注的文档
最近下载
- 小学奥数教师版(合辑)1-1-2-3 分数四则混合运算综合.pdf VIP
- 小学奥数合辑(学生用书)1-1-2-3 分数四则混合运算综合.pdf VIP
- 心电监护操作流程课件(PPT 34张).pptx VIP
- 高考数学三年真题(2023-2025年)《统计与概率》真题分类汇编含答案.docx VIP
- 高斯小学奥数五年级上册含答案_分数应用题.doc VIP
- 药食同源发酵项目可行性研究报告建议书新建申请备案案例范文解读.doc VIP
- 2024年广东省高考政治试卷(真题+答案).pdf VIP
- 小学数学 奥数思维《计算:小数的巧算》专项训练2(含解析).docx VIP
- 智慧城市排水防涝系统改造与优化创新研究.docx VIP
- 核心稳定性与核心力量训练.ppt
文档评论(0)