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Read the text and answer the question! Being able to see things around us and the beauty of the world truly is a blessing. This blessing is all thanks to our remarkable eyes. If one’s eyes function as they should, one can see images clearly, but how exactly does that happen? Light rays enter the eye through the cornea, the clear front “window” of the eye. The cornea bends the light rays in such a way that they pass freely through the pupil the opening in the center of the iris through which light enters the eye. After that, the light rays pass through the eye’s natural crystalline lens. This clear, flexible structure works like the lens in a camera, shortening and lengthening its width in order to focus light rays properly. Light rays pass through a dense, transparent gel-like substance, called the vitreous that fills the globe of the eyeball and helps the eye hold its spherical shape. In a normal eye, the light rays come to a sharp focusing point on the retina. The retina functions much like the film in a camera. It is responsible for capturing all of the light rays, processing them into light impulses through millions of tiny nerve endings, then sending these light impulses through over a million nerve fibers to the optic nerve. Finally, when the signals from nerve systems reach our brain, it gets interpreted enabling us to see images. This process may sound quite complex that it needs sometimes to happen, but that’s not true.In fact, it happens spontaneously and very quickly that you won't even realize it. How our eyes work to help us see thingsis truly remarkable. (Adapted from: www.nkcf.org ) We can infer from the text thatwhenone's eyes don't function properly, he/she might ....
Read the text and answer the question!
Being able to see things around us and the beauty of the world truly is a blessing. This blessing is all thanks to our remarkable eyes. If one’s eyes function as they should, one can see images clearly, but how exactly does that happen?
Light rays enter the eye through the cornea, the clear front “window” of the eye. The cornea bends the light rays in such a way that they pass freely through the pupil the opening in the center of the iris through which light enters the eye. After that, the light rays pass through the eye’s natural crystalline lens. This clear, flexible structure works like the lens in a camera, shortening and lengthening its width in order to focus light rays properly. Light rays pass through a dense, transparent gel-like substance, called the vitreous that fills the globe of the eyeball and helps the eye hold its spherical shape.
In a normal eye, the light rays come to a sharp focusing point on the retina. The retina functions much like the film in a camera. It is responsible for capturing all of the light rays, processing them into light impulses through millions of tiny nerve endings, then sending these light impulses through over a million nerve fibers to the optic nerve. Finally, when the signals from nerve systems reach our brain, it gets interpreted enabling us to see images.
This process may sound quite complex that it needs sometimes to happen, but that’s not true. In fact, it happens spontaneously and very quickly that you won't even realize it. How our eyes work to help us see things is truly remarkable.
(Adapted from: www.nkcf.org)
We can infer from the text that when one's eyes don't function properly, he/she might .... 
have a problem with the muscles
experience double vision
suffer from cataract
see images clearly
look unattractive
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F. Aulia
Master Teacher
Mahasiswa/Alumni Universitas Indonesia
Jawaban
jawaban yang tepat adalah B.
Pembahasan
Kata kunci pada soal adalah " function properly" . Kata kunci tersebut kita temukan pada paragraf pertama, yaitu kalimat " If one’s eyes function as they should, one can see images clearly ..." yang artinya "Jika mata seseorang tidak berfungsi sebagaimana mestinya, seseorang dapat melihat gambar dengan jelas ...". Berdasarkan kalimat tersebut, dapat disimpulkan bahwa jika mata seseorang tidak berfungsi dengan baik sebagaimana mestinya, maka kemungkinan dia tidak akan dapat melihat gambar dengan jelas ( he/she cannot see images clearly atau dalam kata lain he/she experience double vision ). Pilihan A tidak tepat karena pernyataan tersebut adalah penyebab mata tidak berfungsi dengan baik, bukan akibatnya. Pilihan Ckurang tepat karena masalah membaca dalam hal ini bukan akibat langsung dari tidak berfungsinya mata dengan baik. Pilihan Dtidak tepat karena seseorang dapat melihat gambar dengan baik justru jika matanya berfungsi dengan baik. Pilihan Etidak tepat karena berfungsi atau tidaknya mata dengan baik tidak berkaitan dengan penampilan seseorang. Dengan demikian, jawaban yang tepat adalah B.
Kata kunci pada soal adalah "function properly". Kata kunci tersebut kita temukan pada paragraf pertama, yaitu kalimat "If one’s eyes function as they should, one can see images clearly ..." yang artinya "Jika mata seseorang tidak berfungsi sebagaimana mestinya, seseorang dapat melihat gambar dengan jelas ...". Berdasarkan kalimat tersebut, dapat disimpulkan bahwa jika mata seseorang tidak berfungsi dengan baik sebagaimana mestinya, maka kemungkinan dia tidak akan dapat melihat gambar dengan jelas (he/she cannot see images clearly atau dalam kata lain he/she experience double vision).
Pilihan A tidak tepat karena pernyataan tersebut adalah penyebab mata tidak berfungsi dengan baik, bukan akibatnya.
Pilihan C kurang tepat karena masalah membaca dalam hal ini bukan akibat langsung dari tidak berfungsinya mata dengan baik.
Pilihan D tidak tepat karena seseorang dapat melihat gambar dengan baik justru jika matanya berfungsi dengan baik.
Pilihan E tidak tepat karena berfungsi atau tidaknya mata dengan baik tidak berkaitan dengan penampilan seseorang.
Dengan demikian, jawaban yang tepat adalah B.
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