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It seems to be strange to you there is a...

It seems to be strange to you there is a blind spot on the eyes. Here is an interesting experiment 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) of the letter falls on the blind spot, it won’t be seen. That is why either of the letters disappears.

1.The writer of the passage thinks that _____ there is a blind spot on the eye.

A. few people know       B. no one knows

C. most people know      D. all the people know

2.a blind spot” in the passage means ________ in Chinese.

A.污点    B. 消散       C. 盲点    D. 遗失

3.You fail to see the letter L in the experiment because ___________.

A. your eyes are poor

B. its image falls on the blind spot

C. your left eye is not open

D. you move it close to your eye

4.The passage mainly (主要) tells us _______.

A. how to find the blind spot

B. an interesting experiment

C. where the blind spot is

D. there is blind spot on the eye

 

1.A 2.C 3.B 4.D 【解析】 试题分析:短文主要通过一个有趣的实验,来证明我们的眼睛是有盲点的。 1.1】A细节理解题。问题:短文中作者认为多少人知道眼睛有盲点?结合短文提供的信息,现实生活中人们很少有人知道这一现象的存在。故选A。 2.2】C细节理解题。问题:单词的汉语意思是什么?分析原文:Here is an interesting experiment(实验)that can make something disappear, when one eye is open.句意:这是一个有趣的实验,可以让东西消失,当一只眼睛是睁着的。故选C。 3.3】B细节理解题。问题:实验中你为什么没有看到字母L?分析原文:as you move the card slowly towards you, you' 11 find the letter L disappearing.句意:当你把卡片慢慢地移向你,你会发现字母L消失。故选B。 4.4】D细节理解题。问题:主要告诉我们什么?通读全文得知重点描述在我们的眼睛中有盲点。故选D。 考点:考查科普类短文阅读。
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I lost my sight when I was four years old by falling off a car and landing on my head. Now I am thirty-two. I can’t remember the brightness of sunshine and what color red is clearly. It would be   ________  to see again, but a disaster can do strange things to people. I don’t mean I would ________ to go without my eyes. I simply mean that the loss of them made me appreciate(珍惜)more what I had   ________  .

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7.A. worried     B. hurt         C. shocked    D. encouraged

8.A. important   B. unimportant C. possible    D. impossible

9.A. invented     B. discovered C. ordered    D. directed

10.A. so         B. for        C. but        D. and

 

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—Certainly. In half an hour.

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