阅读理解。 When we have small cuts in the skin (皮肤), something strange may happen
题型：专项题难度：来源：
(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 tiny and we can"t see them with our eyes. Different cells have different uses. Our skin cells are
special ones.The cells on the surface (表面) of our skin are old dead cells. New skin cells are right under
the surface. These are the living skin cells. They do 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.Surface skin cells fit together closely with no
gaps between them. When you cut or bum yourself, you can harm your skin cells. A small cut will not do
much harm. 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 completely. In this way,
your skin can grow and get well itself.
How amazing the tiny 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.
B.条纹
C.缝隙
B.can grow and make new cells
C.aren"t in most living things
a b c
B.b→c→a
C.a→c→b
B.Different cells have different uses in our bodies.
C.The skin cells have little work to do in the body.
B.THE IMPORTANCE OF SKIN
C.HOW TO PROTECT OUR FINGERS
答案
举一反三
animals.
In one test the old scientist put a monkey in a room where there were several boxes. Some boxes were inside
other boxes. One small box had some food in it. The scientist wanted to watch the mokey and to find out how
long it would take the monkey to find the food. The scientist left the room, he waited a few minutes outside the
door. Then he got down on his knees and put his eye to the keyhole. What did he see? To his surprise, he found
himself looking into the eye of the monkey. The monkey was on the other side of the door and looked at the
scientist through the keyhole.
( ) 1. The scientist wondered if the monkey was cleverer than other animals.
( ) 2. In one test the scientist put a monkey into a box where there was some food.
( ) 3. After the scientist left the room, the monkey began to eat food.
( ) 4.Tthe scientist looked at the monkey through the keyhole with his eye.
( ) 5. To the scientist"s surprise, the monkey put its eye to the keyhole.
word box: junior 初级的 senior 高级的 diploma 文凭 percentage 百分比
B.500
C.120
B.third
C.fifth
get ______ from senior high school.
B.friends
C.ways of thinking
want diplomas.
B.20％
C.25％
B.150 students want to make friends most in senior high school.
C.The number of the students who want to get study skills in senior high school is the smallest.
July 20th, 1969 was an important day. Two Americans landed on the moon. Their names were Armstrong
and aldrin. They went there by spaceship. Its name was Apollo 11.
Apollo 11 left Cape Kennedy on July 16th and went three hundred and eight-five thousand kilometers. It took
the two Americans three days to get there. On July 20th the spaceship landed in the Sea of Tranquility (宁静),
Armstrong first stepped onto the moon. The two men walked on the ground of the moon. They picked up some
stones and put them in the spaceship. They jumped up and down. They were tired after their moonwalk, so they
rested.
On July 21st Apollo 11 left the moon and returned to Earth. Three days later, it came down in the Pacific
Ocean (太平洋), A ship took the men to America.
B. a machine
C. a spaceship
D. a country
B. the earth
C. the sun
D. the world
"_______".
B. stopped
C. flew
D. walked
B. 3850
C. 38500
D. 385000
B. a spaceship was made.
C. two Africans landed on the moon.
D. a ship took the two men to America.
| Jump interesting stay nothing as to hour help and find |
| 阅读理解。 |
| There have been many great inventions or things that changed the way we live. The first great invention was the one that is still very important today--the wheel. This made it easier to carry heavy things and to travel long distance. For hundreds of years after that there were few inventions that as much effect as the wheel. Then in the early 1800s the world started to change. There was little unknown land left in the world. People didn"t have to explore much any more. They began to work instead to make life better. In the second half of the 19th century many great inventions were made. Among them were the camera, the light and the radio. These all play a big part in our daily life today. The first part of the 20th century saw more great inventions. The helicopter in 1909, movies with sound in 1926, the computer in 1928, jet planes in 1930. This was also a time when a new material was first made. Nylon came out in 1935. It changed the kind of clothes people wore. The middle part of the 20th century brought new ways to help people get over diseases. They worked very well. They made people healthier and allowed them to live longer. By the 1960s most people could expect to live to be at least 60. By this time most people in developed countries had a very good life. Of course new inventions continued to be made. But man now had a desire (渴望) to explore again. The earth was known to man but the stars were not. Man began looking for ways to go into space. Russia made the first step. Then United States took a step. Since then other countries, including China and Japan, have made their own steps into space. In 1969 man took his biggest step away from earth. Americans first walked on the moon. This is certainly just a beginning, though. New inventions will some day allow us to do things we have never yet dreamed of. |
| 1. This passage talks mainly about . |
[ ] |
| A. why cars were very important B. when light was invented C. how inventions affect people"s daily life D. which country made the first step into space |
| 2. According to the passage man didn"t have a desire to explore a lot . |
[ ] |
| A. at the beginning of 1800s B. in the 1960s C. since the 1900s D. from the 1800s to 1960s |
| 3. In the 1800s, people began to work in order to make . |
[ ] |
| A. explorations B. their life better C. discoveries D. a trip to space |
| 4. Nylon came out of five years later than . |
[ ] |
| A. radio B. camera C. jet planes D. movies |
| 5. People can live longer lives because that help cure diseases have worked very well. |
[ ] |
| A. doctors B. new ways C. medicines D. new hospitals |