It seems to be strange to you there is a

题目：

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

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．only you know

D．all the people know小题2:The word "disappear" in the passage means_______ in Chinese.

A．驱散

B．消散

C．消失

D．遗失小题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小题4:In which order(顺序)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小题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.