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 few 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(缝隙) 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.
1. 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
2.Skin cells heal cuts in three steps. ______is the right order.
3. 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
4. The best title for this passage should be______.
A. How Skin Cells Heal Cuts B. The Importance of Skin
C. How to Protect Our FingersD. The Importance of Cells
There are many things we need to know, but we do not learn them at school. For example, if we want to use our money wisely, we need to shop carefully. We need to know how to compare(比较) the prices of the things in different shops. We also need to know how to make the best choice when we shop.
Knowing how to make such choices is a life skill, and we need to practice it in our daily life.
Supermarket W Business hours: 6:00 a.m – 10:30 p.m. Eggs (1 kilo): £ 6.50 Apples(1 kilo): £3.80 Pork ( 1 kilo): £18.20 Tomatoes (1 kilo): £1.58 Environment: Very good Service: Good |
| Supermarket M Business hours: 5:30 a.m – 10:30 p.m. Eggs (1 kilo): £6.60 Apples(1 kilo): £3.96 Pork ( 1 kilo): £18.20 Tomatoes (1 kilo): £1.50 Environment: Very good Service: Good |
Supermarket Y Business hours:6:00 a.m – 10:00 p.m. Eggs (1 kilo): £ 6.20 Apples(1 kilo): £3.30 Pork ( 1 kilo): £17.20 Tomatoes(1kilo):£1.30 Environment: Need improving Service: Just so-so |
| Supermarket T Business hours: 6:00 a.m – 9:30 p.m. Eggs (1 kilo): £6.90 Apples(1 kilo): £4.00 Pork ( 1 kilo): £18.60 Tomatoes (1 kilo): £1.60 Environment: Just so-so Service: Bad |
1.Which supermarket has the longest Business Hours?
A. Supermarket W. B. Supermarket T.
C. Supermarket Y. D. Supermarket M.
2.The price of the pork in ___________ is the same as that in ___________.
A. Supermarket W; Supermarket M
B. Supermarket Y; Supermarket T
C. Supermarket W; Supermarket Y
D. Supermarket M; Supermarket T
3.If you want to spend the least money on eggs, which supermarket will you go to?
A. Supermarket W. B. Supermarket M.
C. Supermarket Y. D. Supermarket T.
4.What may be the reason if a shopper usually shops in Supermarket Y?
A. The Environment. B. The Service.
C. The Business hours. D. The Price.
It was the first day of school. I had a new classmate, a little old lady with a warm smile. She said, “Hi, young man! I'm Rose. I'm 87 years old. Can I give you a hug?”
I said , “Of course!”
“Why are you in college at an age?” I asked.
She joked, “I'm here to meet a husband, get married, have children, and then travel around the world.”
“No, seriously,” I asked.
“I always of having a college education. Now I'm getting one!” she told me.
After a year, Rose became popular. She easily made friends wherever she went. She loved to dress up and she enjoyed the attention from .
At the end of the term we invited Rose to at our party. I'll never forget what she taught .
“We do not stop playing because we are old; we grow because we stop playing. Here are the of staying young. You have to laugh and find humor every . You've got to have a dream. When you your dreams, you die!” she said.
“There is a big between growing old and growing up. Anybody can grow old. That doesn't take any talent or ability,” she added. “But to , you have to find the chance in change. Have no regrets(遗憾). We usually don't have regrets for what we did , rather for things we did not do.”
Finally we graduated from the college with Rose. One week graduation , she died peacefully in her sleep. She taught us by example that it's never too late to be all you can possibly be.
1.A. slowlyB. happilyC. heavily D. badly
2.A. soB. thisC. suchD. that
3.A. rich B. badC. poorD. short
4.A. hopedB. wishedC. wantedD. dreamed
5.A. anotherB. the otherC. the others D. others
6.A. say B. speakC. talk D. discuss
7.A. us B. her C. him D. them
8.A. young B. old C. tall D. thin
9.A. stories B. secrets C. seasons D. surveys
10.A. weekB. month C. year D. day
11.A. loseB. haveC. keepD. like
12.A. chanceB. changeC. difference D. problem
13.A. stand up B. grow upC. grow oldD. keep healthy
14.A. because B. so C. though D. but
15.A. in B. after C. during D. before
—Where are you? I can’t see you in the hall.
—______. I’m just one block away.
A. Hurry upB. I’m coming
C. Nice talking to youD. Hope to see you again
—______ did Samuel stand by the window so long?
—To see what would happen.
A. How B. When
C. What D. Why
—What else do you need for the trip, Mum?
—______ else. I think we have got everything ready.
A. Nothing B. Anything
C. Something D. Everything