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 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.
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．most people know
D．all the people know小题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小题3: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 blind spot on the eye
小题1:A
小题2:D
小题3:D
题目分析：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。
小题1: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
小题2:细节题。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
小题3:主旨题。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
点评：对于此类科普类说明文，学生在答题时需要把握好答题的方法，首先对文章进行整体的阅读，初中的阅读来说不难，重在对单词词义的考察及其整个文章语言逻辑关系的判断。所以在平时的学习中除了多去积累记忆单词外，还需要适当做题，保持良好的语感与阅读的习惯。