精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

You have often looked into a mirror，of course．But you haven't seen the real picture of your face yet．And why couldn't you see it? When you look into a mirror，you don't see your face as other people see it．You see a reversed picture．If you close your left eye，your picture doses its right eye．If you touch your right ear with your right hand，your picture touches its left ear with its left hand．

If you have two small mirrors，you can see your faces as your friends see it．You hold the two mirrors at right angles（角度）to each other and look into them．After some practice you will be able to see the real picture of your face．

Now close your left eye and your picture close its left eye，too．Touch your right ear with your right hand and your picture touches its right ear with its right hand! This happens because each mirror reflected（反射）the picture in the other mirror．So you see a reversed picture of a reversed picture，which，of course，is the same as the real picture．

1．When you look into a mirror，you couldn't see ________．

A．a picture of yourself                          B．your face as others see it

C．the picture of your face                              D．the picture of your eyes

2．What does the word reversed mean in this passage?

A．暫存的                B．相反的                C．模擬的                D．虛擬的

3．According to the first paragraph of the passage，if you close your left eye，your picture in the mirror ________．

A．closes its fight eye                                   B．closes its left eye

C．touches its right ear                                    D．touches its left ear

4．Which of the following picture is right according to the second paragraph of the passage?

5．We can learn something about _________ from the passage．

A．body language                                         B．physical Education（體育）

C．optical illusions（視錯覺）                         D．television invention