Question

It seems to be strange to you there is a blind spot(點) 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.

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 blind spot is            D. there is blind spot on the eye

 

Answer 1

【答案】

 

1.A

2.D

3.D

【解析】

試題分析：這篇文章通過一個實驗告訴我們，在我們的眼睛里有存在一個盲點，對于這個知識很少有人知道

1.A細節(jié)題。根據(jù)文章It seems to be strange to you there is a blind spot(點) on the eyes.可知，很少有人知道我們的眼睛有一個盲點。故選A

2.D根據(jù)文章可知，我們做實驗的順序應(yīng)該是：制作一個卡片，寫上兩個英語字母，舉起卡片，閉上右眼，看字母R,移動卡片離眼睛更近。故選D

3.D 主旨大意。這篇文章通過一個實驗告訴我們，在我們的眼睛里有一個盲點。故選D 眼睛有一個盲點符合文章主旨大意。

考點：科普類短文閱讀。