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精英家教網 > 初中英語 > 題目詳情

It seems to be strange to you that 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 eyes. 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.
【小題1】The writer of the passage thinks that ________ there is a blind spot on the eyes.

A.few people know
B.no one knows
C.most people know
D.all the people know
【小題2】The word “disappear” in the passage means ________ in Chinese.
A.出現B.遠離C.消失D.靠近
【小題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
【小題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.④⑥①②③⑤B.①③⑥④⑤②
C.⑥①④③②⑤D.⑥④①③⑤②
【小題5】The passage mainly (主要) tells us ________.
A.the blind spot can move
B.an interesting experiment
C.where the blind spot is
D.there is a blind spot on the eyes


【小題1】A
【小題2】C
【小題3】B
【小題4】D
【小題5】D

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