It seems to be strange to you there is a blind spot(盲点)on the eyes, Here is an interesting experiment(实验)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, Lon 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' 11 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．
小题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．only you know
D．all the people know小题2:The word "disappear" in the passage means_______ in Chinese.
A．驱散
B．消散
C．消失
D．遗失小题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小题4:In which order(顺序)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小题5:The passage mainly tells us_______.
A．how to find the blind spot
B．an interesting experiment
C．where the blind spot is
D．there is a blind spot on the eyes.
小题1:A
小题2:C
小题3:B
小题4:D
小题5:D
题目分析：这似乎是奇怪的你有一个盲点的眼睛,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。做一个卡片大小的明信片,写两个英文字母L和R,R朗左边和右边。首先,把卡大约80厘米远,你会看到信件。然后闭上你的右眼看字母R只有你的左眼。现在,当你移动卡慢慢地向你,你会发现字母L消失。但是如果你移动卡靠近你的脸,这封信将会出现。现在闭着左眼做相同的实验,你会发现字母R消失。为什么字母消失?这是因为有一个盲点。当影像的盲点,它不会被看到。这就是为什么这两个字母就消失了。
小题1: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，人们现实生活中很少有人知道这一现象的存在。故选：A
小题2: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
小题3:细节理解题。问题：你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：当你移动卡慢慢地向你,你会发现字母L消失。故选：B
小题4:细节理解题。问题：在实验中的正确排序是什么？联系短文的第二自然段发现，第四项的顺序是正确的。故选：D
小题5:细节理解题。问题：主要告诉我们什么？通读全文中得知重点描述在我们的眼睛中有盲点。故选：D