It' seems to be strange to you there is a blind spot(盲點 )on the eyes. Here is an interesting experiment（實驗） that can make something disappear, when one eye is open.
Make a card about the size of a postcard and write two English letters L and R on it, L on the left and R on the right, First, hold the card about 80 cm away and you see both the letters. Then close your right eye and look at the letter R only with your left eye. And now. as you move the card slowly towards you. you'll find the letter L disappearing. But if you move the card nearer to your face, the letter will be seen again, Now do the same experiment with your left eye closed, you'll find the letter R disappearing,
Why does the letter disappear? It is because there is a blind spot on the eye. When the image（影像） or the letter falls on the blind spot, it won't be seen. That is why either of the letters disappears.
【小題1】The writer of the passage thinks that___________ there is a blind spot on the eye.
| A．no one knows | B．few people know |
| C．most people know | D．a(chǎn)ll the people know |
| A．遺失 | B．驅(qū)散 | C．消散 | D．消失 |
| A．Hold the card | B．Move the card nearer |
| C．Write two English letters | D．Make a card |
| A．there is blind spot on the eyes | B．a(chǎn) boring experiment |
| C．a(chǎn)n interesting story | D．when to find the blind spot |
【小題1】B
【小題2】D
【小題3】C
【小題4】D
【小題5】A
解析試題分析：這篇短文主要介紹了作者通過一個實驗，告訴了我們在我們的眼睛上有一個盲點，并重點解釋了造成這一現(xiàn)象的原因。
【小題1】細節(jié)理解題。根據(jù)第一段It seems to be strange to you that there is a blind spot (盲點)on the eyes.描述，可知很少有人知道眼睛上有盲點。故選B。
【小題2】詞義猜測題。聯(lián)系下文描述，可知此處指的是讓某物消失，故選C。
【小題3】細節(jié)理解題。根據(jù)最后一段When the image (影像) of the letter falls on the blind spot, it won’t be seen.描述，可知選C。
【小題4】細節(jié)理解題。根據(jù)第二段描述Make a card about the size of a postcard and write two English letters L and R on it,可知試驗的第一步是制作一個卡片，故選D
【小題5】歸納理解題。這篇短文主要告訴了我們在我們的眼睛上有一個盲點，故選A。
考點：科普類短文閱讀。
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