Question

It seems to be strange to you there is a blind spot(盲點)on the eyes, Here is an interesting experiment(實驗)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．

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

2.The word "disappear" in the passage means_______ in Chinese.

A. 驅散 B．消散 C．消失 D. 遺失

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.In which order(順序)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

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.

 

Answer 1

1.A

2.C

3.B

4.D

5.D

【解析】

試題分析：這似乎是奇怪的你有一個盲點的眼睛,這是一個有趣的實驗,可以讓東西消失,當一只眼睛是睜著的。做一個卡片大小的明信片,寫兩個英文字母L和R,R朗左邊和右邊。首先,把卡大約80厘米遠,你會看到信件。然后閉上你的右眼看字母R只有你的左眼�，F在,當你移動卡慢慢地向你,你會發現字母L消失。但是如果你移動卡靠近你的臉,這封信將會出現�，F在閉著左眼做相同的實驗,你會發現字母R消失。為什么字母消失?這是因為有一個盲點。當影像的盲點,它不會被看到。這就是為什么這兩個字母就消失了。

1.短文中作者認為多少人知道眼睛有盲點？結合短文提供的信息，人們現實生活中很少有人知道這一現象的存在。故選：A

2.單詞的漢語意思是什么？分析原文：Here is an interesting experiment(實驗)that can make something disappear, when one eye is open.句意：這是一個有趣的實驗,可以讓東西消失,當一只眼睛是睜著的。故選：C

3.你實驗中你為什么沒有看到字母L?分析原文：as you move the card slowly towards you, you' 11 find the letter L disappearing.句意：當你移動卡慢慢地向你,你會發現字母L消失。故選：B

4.在實驗中的正確排序是什么？聯系短文的第二自然段發現，第四項的順序是正確的。故選：D

5.主要告訴我們什么？通讀全文中得知重點描述在我們的眼睛中有盲點。故選：D

考點：科普類閱讀。