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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(点) 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说明: 学科网(www.zxxk.com)--教育资源门户,提供试卷、教案、课件、论文、素材及各类教学资源下载,还有大量而丰富的教学相关资讯! because there is a blind spot on the eye. When the image 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.In which order should you do the experiment?

①Hold the card   ②Move the card nearer    ③Close your right eye

④Write two English letters   ⑤Look at the letter R    ⑥Make a card

A. ④⑥①②③⑤                      B. ①③⑥④⑤②

C. ⑥①④③②⑤                      D. ⑥④①③⑤②

3.The passage mainly tells us _______.

A. how to find the blind spot        B. an interesting experiment

C. where the bl说明: 学科网(www.zxxk.com)--教育资源门户,提供试卷、教案、课件、论文、素材及各类教学资源下载,还有大量而丰富的教学相关资讯!ind spot is            D. there is blind spot on the eye

 

1.A 2.D 3.D 【解析】 试题分析:这篇文章通过一个实验告诉我们,在我们的眼睛里有存在一个盲点,对于这个知识很少有人知道 1.A细节题。根据文章It seems to be strange to you there is a blind spot(点) on the eyes.可知,很少有人知道我们的眼睛有一个盲点。故选A 2.D根据文章可知,我们做实验的顺序应该是:制作一个卡片,写上两个英语字母,举起卡片,闭上右眼,看字母R,移动卡片离眼睛更近。故选D 3.D 主旨大意。这篇文章通过一个实验告诉我们,在我们的眼睛里有一个盲点。故选D 眼睛有一个盲点符合文章主旨大意。 考点:科普类短文阅读。
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Mary picked up a pencil and a piece of paper,saying,“Now,you want to earn money for the autumn camping trip,right?” Tom,her brother,nodded.He wasn’t able to go last year because he hadn’t earned enough money during the summer.This year he came up with a plan.

He made a necklace for his mother that everyone admired.They were surprised to learn that Tom had made it for her.Why not make more necklaces and sell them?

“OK,” said Mary,“The first thing you need to do is to figure out(计算)how much you have now.’’

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“That gives you a total of $27.25,” said Mary,“That is called your capital.The next thing you need to know is how much it will cost you to make each necklace.”

“Well,the pet shop will give me all the feathers the birds lose.I'll have to buy the beads(小珠子)and string,” said Tom.

Mary wrote on the piece of paper:

CAPITAL      $27.25

EXPENSES     Feathers                       no cost

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“Hmm,” Tom looked thoughtful and said,“There's a shop in town that sells almost the same kind of necklace for $ 7.50.If I charge(要价)$ 6.00,people will think that's a bargain.”

“OK.If you sell each necklace for $ 6.00,you'll make a good profit(利润)on each then,” said Mary.

“Hurray!” Tom cried,“If I sell 20 necklaces,I'll have enough from the profit for the camping trip and $10.00 left over.”

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3.What's the best title for this story?

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