聽力是六級考試中的重要題型，考生對這部分的復(fù)習(xí)一定不能松懈，考生可以充分利用暑期時間堅持練習(xí)聽力，下面是一篇英語六級聽力練習(xí)，快來練練吧。

Most people suffering from multiple sclerosis or spinal cord injuries can still move their eyes because they are directly connected to the brain. Some existing technologies already allow severely disabled people to stare at arrows on a computer and direct the movement of a wheelchair.

But there are problems with that system, including a delay between the movement of the eyes and the wheelchair.

"Current tracking software often uses a screen-based system where you have a screen open and you look at locations on the screen. The problem with that is that it's very simplistic and also diverts the users' attention from the outside world and therefore there's more risk of not noticing obstacles or other things in the way," said Kirubin Pillay, a PhD student at Imperial College London.

A team led by Aldo Faisal at Imperial College London has developed software that allows users to maneuver the chair just by looking in the direction they want to take.

"Our eyes are not only a window into our soul, they're also a window to our intentions. So if you want to go somewhere, for example if I want to go there, or go there, I will look there and I will look there in a specific manner, and we can build a computer system that can decode our eye movements, and so we observe eye movements with an eye tracker, and we then try to make sense of them, and the computer interprets these commands and drives the wheelchair accordingly,” said Fasial.

Two cameras trained on the eyes observe their movements and can determine whether a patient is merely looking around or wants to move in a certain direction.

"So essentially we track the pupil of the eye and via a calibration process, we relate that to where the subject's looking in the world around them," explained William Abbott, a researcher at Imperial College London.

Visual information detected by cameras is analyzed by algorithms within 10 milliseconds and translated into instructions for movement that's almost instantaneous.

The camera-based system costs only about $85 because most of the work is done by the algorithms. No expensive hardware is needed. The London team hopes to make the system commercially available within three years.

全面掌握四六級考試信息，為備考復(fù)習(xí)做準備！

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四六級在哪兒報名：英語四六級考試現(xiàn)在都由各學(xué)校組織報名，一般會通過學(xué)校的教務(wù)網(wǎng)站或者各學(xué)院集體報名，報名后還有信息確認的過程，部分學(xué)校需要電子攝像。點擊查看更多>>

四六級報名費要多少：四六級報名費用由各院校在報名時收取，不同地區(qū)及院校收費標(biāo)準不同，一般在15-70元不等，部分院校不設(shè)立現(xiàn)場交費，采取從校園卡或銀行卡統(tǒng)一劃扣方式收取。點擊查看更多>>

四六級考試流程是怎樣的：英語四六級是同一天考試，上午考四級，下午考六級。考場上先試音，然后進行作文部分答題，之后是聽力部分考試，最后是剩余題型考試。點擊查看更多>>

四六級分數(shù)怎么計算：大學(xué)英語四、六級考試的分數(shù)報道采用常模參照方式，不設(shè)及格線。四六級考試單項成績有四個部分，這四個部分以及所占的分值比例為：聽力占35%，閱讀占35%，翻譯占15%，作文占15%。點擊查看更多>>

四六級考試改革了哪些：CET考委會宣布從2013年12月考次起對英語四六級考試題型改革。本次四六級考試改革取消了完形填空、快速閱讀，增加閱讀理解匹配題，復(fù)合式聽寫改為單詞和詞組聽寫，句子翻譯改為短文漢譯英。點擊了解更多>>

四六級成績什么時候出：四六級考試成績一般是考后兩個月左右公布，一般在成績查詢開始前10天左右，四六級考委會網(wǎng)站會公布成績查詢通知，告知大家確切的成績查詢開始時間及成績查詢方式。點擊了解更多>>

四六級多少分過：四六級報道成績滿分為710分，凡成績在220分以上的考生，發(fā)給成績單，不設(shè)官方及格線。但考委會規(guī)定“四級成績達到425分以上（含425分）者方可報考六級”，故一般認為四級及格線是425分。點擊了解更多>>