摘要:6.How does Thomas spell his last name?A.R―U―Z―I―C. B.R―U―I―Z―C. C.R―U―Z―C―I.

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When we have small cuts in the skin(皮肤), something strange may happen. The cuts are able to heal(痊愈) themselves in a couple of days. How does this happen? Read on, and you will find out the secret.
Every living thing on the earth is made up of cells(细胞). Cells grow and make new cells. Most cells are very small and we can't see them with our eyes. Different cells have different uses. Our skin cells are special ones. The cells on the outside of our skin are old dead cells. New skin cells are right under the outside. These are the living skin cells. They work for our bodies. They help protect our bodies and heal cuts.
Our bodies make skin cells all the time. As the old cells fall off, new cells grow in the same place. Each person makes about 18 kg of skin cells during his or her life. Outside skin cells fit together closely with no gaps between them. When you cut yourself, you can harm your skin cells. A small cut will not be harmful. Your skin will quickly heal itself by making new skin cells. How do skin cells work? First, the cells near the cut get bigger and move into the gap. Next, these bigger cells meet in the middle. They form a new layer(层) of skin cells. Finally, new cells will grow until the gap disappears. In this way, your skin can grow and get well itself. How amazing the small cells are! Next time you have a cut, don't worry about it. Maybe in a few days, you will be surprised to find it healed.
【小题1】The underlined word “gaps” in the passage means “______” in Chinese.

A.突起B.条纹C.缝隙D.代沟
【小题2】From the passage, we know that cells______.
A.are large and we can see them with our eyes
B.can heal few cuts themselves
C.are in everything on the earth
D.can grow and make new cells
【小题3】Skin cells heal cuts in three steps. ______is the right order.


【小题4】Which of the following is TRUE according to the passage?
A.Each person can make 18 kg of skin cells every day.
B.Different cells have different uses in our bodies.
C.The skin cells have little work to do in the body.
D.Every living thing on the earth is made up of skin cells
【小题5】The best title for this passage should be______.
A.How Skin Cells Heal Cuts
B.The Importance of Skin
C.How to Protect Our Fingers
D.The Importance of Cells

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Soon computers and other machines will be able to remember you by looking at your eyes! The programme works because everyone’s eyes are different. So in the future you won’t have to remember a number when you want to use a machine or take money out of a bank. You’ll just have to look at the machine and it will be able to tell who you are.

The eye-recognition(眼睛识别) programme is already being tested in shops and banks in the USA, Britain, Spain, Italy and Turkey. Soon, this technology will take the place of all other ways of finding out who people are.

However, scientists are working on other systems. Machines will soon be able to know you from the shape of your face or hand or even your smell! We already have machines that can tell who you are from your voice or the mark made by your finger.

Eye-recognition is better than other kinds because your eyes don’t change as you get older, or get dirty like hands or fingers. And even twins have different eyes, so the programme can be up to 94% correct, depending on(依靠) how good the technology is. Some programmes may only be right 51% of the time. In Britain, it was found that 91% of people who had tried it said that they liked the idea of eye-recognition.

In the future your computure will be looking at you in the eye. So smile!

1. How does the eye-recognition programme work?

A. You write your number.        B. You show your ID card.

C. You look at the machine.       D. You say your name.

2. Why can the programme be up to 94% correct?

A. Because eyes never change    .        B. Because hands or fingers can get dirty.

C. Because people like the idea of the programme    .          

D. Because the programme is widely used around the world.

3. Which of the following is TRUE?

A. The programme is being tested in Japan.

B. Machines with other systems can also tell who you are.

C. 91% people like the idea of the programme.

D. Computers can remember you by looking at your clothes.

4. What does Paragraph 4 talk about?

A. Introduction to other kinds of programmes.   B. Advantages of the programme.

C. The places where the programme is tested.   D. The way how the programme works.

 

 

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