We Can Trust Our Eyes, Can't We?
Our eyes look at thousands of things every day. They get information for our brain to make sense of the world around us. Through our eyes, we get to know the world better. So, we can trust our eyes, can't we? Well... not always. Here are two examples.
Look at the picture on the left. Which man is the tallest? This is quite an easy question, isn't it? Most of us will say C, but, in fact, the three men are the same size. In this case, our eyes trick us.
Let's try the second picture. Which square is darker, Square A or B? Here's the answer. Square A is as dark as Square B. "How could this be possible?" many of us might ask. This is because the dark background around Square B makes it look light. The light background around Square A makes it look dark. If we move the squares away from the background (see the picture below), we can see the answer clearly. The colors of the two squares are the same.
Seeing is NOT believing. We can't always trust our eyes, can we?
我們再來試試看第二張圖。哪一個方格顏色比較深，方格 A 還是方格 B 呢？答案揭曉。方格 A 和方格 B 顏色一樣深。許多人可能會問「怎麼可能？」。這是因為圍繞方格 B 的深色背景讓其看起來顏色較淺。而圍繞方格 A 的淺色背景讓其看起來顏色較深。如果我們移動背景的方格（見下方圖），我們就能清楚看到答案。這兩個方格的顏色是一樣的。
- trust [trʌst] v.
Little kids trust their parents to feed them and keep them safe.
- information [͵ɪnfɚˋmeʃən] n.
I collected some information about insects for science class.
- brain [bren] n.
The brain of a blue whale is about seven kilograms.
- make sense of [`mek `sɛns ɑv]
They tried to make sense of what was going on.
- quite [kwaɪt] adv.
John did quite well on his science test last week.
- size [saɪz] n.
What size shoes do you wear, sir?
- get to [gɛt tu]
With Phoebe's help, we got to stay in a nice hotel in America.
- case [kes] n.
Ted usually doesn't get nervous in public, but in this case he will.
- trick [trɪk] v.; n.
We didn't trick you. You should believe us.
- square [skwɛr] adj.; n.
This watermelon is square. Isn't it special?
- possible [ˋpɑsəb!] adj.
Could you finish the work as soon as possible?
- background [ˋbækgraʊnd] n.
In the background of the picture, you can see many stars in the sky.
- below [bəˋlo] adv.; prep.
From the window, we could see the houses below.
- believe [bɪˋliv] v.
Can you believe that cats and rats were best friends thousands of years ago?
- as... as... [æz æz]
The Japanese food is as delicious as the Chinese food in this restaurant.