16.You have often looked into a mirror(鏡子),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 closes 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 you 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 closes its left eye too.Touch your right ear with your right hand and your picture touches its right ear with its right hand!This is 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.

根據(jù)短文內(nèi)容,選擇最佳答案,并在答題卡上將選定的答案標(biāo)號涂黑.
66.When you look into a mirror,you couldn't seeC.
A.your face as others see it
B.the picture of yourself
C.the picture of your face
D.the picture of your eyes
67.What does the underlined word"reversed"mean in this passage?B
A.相同的
B.相反的
C.模擬的
D.虛擬的
68.According to the first paragraph of the passage,if you close your left eye,your picture in the mirrorD.
A.touches its left ear
B.closes its left eye
C.touches its right car
D.closes its right eye
69.Which of the following pictures is right according to the second paragraph of the passage?B
(M=mirror,P=person)

70.We can learn something aboutCfrom the passage.
A.body language
B.physical education
C.optical illusions
D.television invention.

分析 你一定經(jīng)常照鏡子,但你還沒有看到自己真正的臉的照片,為什么你看不到?當(dāng)你看鏡子,你看到的不像其他人看到的一樣.你看到的是一個(gè)顛倒的畫面.如果你閉上你的左眼,你的鏡像會閉上右眼.如果你用你的右手觸摸你的右耳朵,你的鏡像就是用左手觸摸左耳.如果你有兩個(gè)小鏡子,你可以看到你朋友看到的鏡像.你讓兩個(gè)鏡子成直角,然后看里面.一些練習(xí)過后,你將能夠看到自己真正的臉.現(xiàn)在閉上你的左眼,你的鏡像也會閉上左眼,用你的右手觸摸你的右耳朵,你的鏡像也是這樣的!這是因?yàn)槊總(gè)鏡子都會反射另外一個(gè)鏡子的畫面,所以你看到一個(gè)反轉(zhuǎn)的圖片的反轉(zhuǎn)圖片,這當(dāng)然,和真實(shí)的圖片是一樣的.

解答 66.答案C 細(xì)節(jié)理解題 由文中 You have often looked into a mirror(鏡子),of course,But you haven't seen the real picture of your face yet可知 你一定經(jīng)常照鏡子,但你還沒有看到自己真正的臉的照片,故選C
67.答案B 詞義理解題 由文中 You see a reversed picture.If you close your left eye,your picture closes its right eye可知 你看到的是一個(gè)…的畫面.如果你閉上你的左眼,你的鏡像會閉上右眼,從后面的例子可以看出,看到的是相反的畫面,故選B
68.答案D 細(xì)節(jié)理解題 由文中 If you close your left eye,your picture closes its right eye.If you touch your right ear with your right hand,your picture touches its left ear with its left hand可知 如果你閉上你的左眼,你的鏡像會閉上右眼.如果你用你的右手觸摸你的右耳朵,你的鏡像就是用左手觸摸左耳,故選D
69.答案B 語義理解題 由文中 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可知 你讓兩個(gè)鏡子成直角,然后看里面.一些練習(xí)過后,你將能夠看到自己真正的臉,只有B這個(gè)圖符合鏡子成直角,而且還能通過一個(gè)鏡子看到另一個(gè)鏡子,故選B
70.答案C 文章理解題 由文中可知,本文是在講鏡子的鏡像是相反的,通過做實(shí)驗(yàn)來了解真正的圖象,那就是有關(guān)于視覺的錯(cuò)覺,故選C

點(diǎn)評 本文有一定的難度,出現(xiàn)了許多生詞需要自己的判斷理解才能讀懂,本文要求讀懂文章意思,明白文章在講什么,從整體把握,才可以做好.從文中尋找答案,并且結(jié)合自己的理解來做題.

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