閱讀理解

　　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, 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(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．

most people know

D．

all the people know

(2)

The word “disappear” in the passage means ________ in Chinese．

[　　]

A．

驅(qū)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．

you move it close to your eye

D．

your left eye is not open

(4)

In which order(順序)should you do the experiment?

①Hold the card　�、贛ove the card nearer　　③Close your right eye　�、躓rite two English letters　�、軱ook at the letter R　　⑥Make a card

[　　]

A．

④⑥①②③⑤

B．

①③⑥④⑤②

C．

⑥①④③②⑤

D．

⑥④①③⑤②

(5)

The passage mainly(主要)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

答案：1．A;2．C;3．B;4．D;5．D;
解析：

(1)

仔細品讀文章首句的意思，可知答案只能是A．

(2)

“…But if you move the card nearer to your face, the letter will be seen again”，由這幾個句子的意思可知字母L在眼睛中消失了．注意消失和消散的區(qū)別．

(3)

答案在“When the image of the letter falls on the blind spot, it won’t be seen．”中．

(4)

根據(jù)第二段的意思可知，此實驗的順序是：先制作一張卡片－在上面寫上兩個字母－拿起卡片－閉上右眼－看到字母R－讓卡片離眼睛再近些．故答案是D．

(5)

　　通篇考慮短文，可知D為最佳答案．這由文首一句及“…It is because there is a blind spot on the eye．”也可得出．

　　這篇科普說明文通過一個簡易的小實驗，證實了人的眼睛里有一個盲點．當外界物體的影像落在盲點上時，人就看不見該物體了．


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