英语六级阅读词汇量大、句子结构复杂、题材多样化,为了提高考生阅读能力,精选了以下复习资料。
第46篇:
You stare at waterfall for a minute or two, and then shift your gaze to its surroundings. What you now see appears to drift upward.
These optical illusions occur because the brain is constantly matching its model of reality to signals from the bodys sensors and interpreting what must be happeningthat your brain must have moved, not the other; that downward motions is now normal, so a change from it must now be perceived as upward motion.
The sensors that make this magic are of two kinds. Each eye contains about 120 million rods, which provide somewhat blurry black and white vision. These are the windows of night vision; once adapted to the dark, they can detect a candle burning ten miles away.
Color vision in each eye comes from six to seven million structures called cones. Under ideal conditions, every cone can see the entire rainbow spectrum of visible colors, but one type of cone is most sensitive to red, another to green, a third to blue.
Rods and cones send their messages pulsing an average 20 to 25 times per second along the optic nerve. We see an image for a fraction of a second longer than it actually appears. In movies, reels of still photographs are projected onto screens at 24 frames per second, tricking our eyes into seeing a continuous moving picture.
Like apparent motion, color vision is also subject to unusual effects. When day gives way to night, twilight brings what the poet T.S. Eliot called the violet hour. A light levels fall, the rods become progressively less responsive. Rods are most sensitive to the shorter wavelengths of blue and green, and they impart a strange vividness to the gardens blue flowers.
However, look at a white shirt during the reddish light of sunset, and youll still see it in its true colorwhite, not red. Our eyes are constantly comparing an object against its surroundings. They therefore observe the effect of a shift in the color of illuminating on both, and adjust accordingly.
The eyes can distinguish several million graduations of light and shade of color. Each waking second they flash tens of millions of pieces of information to the brain, which weaves them incessantly into a picture of the world around us.
Yet all this is done at the back of each eye by a fabric of sensors, called the retina, about as wide and as thick as a postage stamp. As the Renaissance inventor and artist Leonardo da Vinci wrote in wonder, Who would believe that so small a space could contain the images of all the universe?
1.Visual illusions often take place when the image of reality is ___.
A.matched to six to seven million structures called cones.
B.confused in the bodys sensors of both rods and cones.
C.interpreted in the brain as what must be the case.
D.signaled by about 120 million rods in the eye.
2.The visual sensor that is capable of distinguishing shades of color is called ___.
A.cones
B.color vision
C.rods
D.spectrum
3.The retina send pulses to the brain ___.
A.in short wavelengths
B.as color pictures
C.by a ganglion cell
D.along the optic nerve.
4.Twenty-four still photographs are made into a continuous moving picture just because ___.
A.the image we see usually stays longer than it actually appears.
B.we see an object in comparison with its surroundings.
C.the eyes catch million pieces of information continuously.
D.rods and cones send messages 20 to 25 times a second.
5.The authors purpose in writing the passage lies in ___.
A.showing that we sometimes are deceived by our own eyes.
B.informing us about the different functions of the eye organs.
C.regretting that we are too slow in the study of eyes.
D.marveling at the great work done by the retina.
第46篇答案:CADAB
国际田径联合会继续禁止俄罗斯选手参赛
减少财务焦虑的五种方法
国际英语资讯:Russian Black Sea Fleet holds drills parallel to NATO exercises
国内英语资讯:Commentary: U.S. arms sales to Taiwan a dangerous move to aggravate cross-Strait situation
Uber上市后首次公布盈利状况,股价暴跌
我该不该和前男友共进晚餐?
美司法部要求英国引渡维基解密创始人阿桑奇
Should Students Have Homework in Summer Vacation 暑假该有作业吗
国内英语资讯:Any attempts to interfere with Chinas internal affairs doomed to failure: spokesperson
用餐时交出手机就能获赠免费披萨 这家店已送出50张大披萨!
娱乐英语资讯:Frances Alain Delon to be awarded Honorary Palme dor at 72nd Cannes Festival
多久洗一次头发最好?
2019年6月英语四级作文预测:心理健康
国内英语资讯:Chinese envoy calls for open economy, refined global economic governance
俄政府解除对调查记者的软禁
体坛英语资讯:Indonesian Paralympian Pangabean eyes 5 golds at 2020 ASEAN Para Games
国际英语资讯:At least 28 killed in bus accident on Portuguese island
国际英语资讯:At least 104 dead in DR Congo boat accident: official
老板的小小举动温暖了我的心
Foreigners Stereotype of China 外国人对中国的刻板印象
体坛英语资讯:Czech biathlete Koukalova ends her sporting career
国内英语资讯:Senior CPC official stresses harmony, stability in religious affairs
国际英语资讯:Thailand should seize business opportunities under Chinas GBA plan: deputy Thai PM
聊聊别人为你做过最暖心的事
国内英语资讯:Chinas top legislature launches media activity to promote Yangtze River protection
国内英语资讯:China firmly opposes U.S. remarks on ordinance amendments: spokesperson
国内英语资讯:Commentary: China proves socialism best way to eradicate poverty
国际英语资讯:Chinese UN envoy calls for eliminating root causes of armed conflict
国际英语资讯:No U.S.-UK trade deal if Good Friday Agreement undermined after Brexit: U.S. politician
体坛英语资讯:Warriors center Cousins questionable for Finals Game 1
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |