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When the traffic lights turn red, we will stop driving a car or crossing a street. Why is red used for traffic lights instead of other colors?
As we know, scattering (散射) happens when light goes through the air. For the same media(媒质), if the wavelength islong, the scattering will be short. If the wavelength is short, then the scattering will be long.
Of all lights we can see red has the longest wavelength, so the scattering is the weakest. That means the red light travels far. In fact, it travels farther on rainy days.
Using the red light can help drivers in farther areas sec the lights. It helps drivers stow down or stop in lime. If drivers don't see the red light until they are close, they may not be able to stop the car in time. An accident may happen Red can also excite people. We can act more quickly when we see the color red. In a word, red lights help drivers stop in time and help prevent accidents.
When the traffic lights turn ______, we will stop driving a car.
A. red    B green     C. yellow
According to the passage, the scattering of the red light is the _______.
A. longest    b. weakest       C. farthest
The underlined word "wavelength" means________ in Chinese.
A.波浪        B.光波      C.波长
What can the red light help drivers do?
A. It can help drivers in farther areas see the lights.
b. It can help drivers slow down or stop in time.
C. A and b
Which of the following is the best title?
A. Why do accidents happen
b. How does the red light travel
C. Why do we use red traffic lights

科目 英语   题型 阅读理解   难度 中等
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When I was a child, my parents often took me to an old house in a thick forest. No other children ever stayed there. I didn’t even have the choice of playing with a brother or sister.
I could never understand what the attraction(吸引) of the house was, even for my parents, who enjoyed nothing better than to sit in silence with a good book. The woman in the house, my father’s distant cousin, was a terrible cook and her food was inedible.
One day, when I was wandering around the garden behind the house, I noticed a wooden house which had clearly been abandoned(被遗弃的). As I walked towards it, I heard a noise, like an animal moving hurriedly away. Then I saw a man with a long beard standing at the door. I was greatly surprised.
“Please don’t tell them you saw me,” he said. “They never use this place, and I have nowhere else to live.” “Don’t worry,” I said. “I won’t tell anyone. But are you all right out here? I mean—do you have enough to eat?” The old man shook his head.
The same evening, I took a small plastic bag into the dining room and, while no one was looking, emptied some of the food into it. Later, I got out of the back door secretly and gave the food to the old man, whose name I had discovered was Taff.
I had never seen anything else as lovely as the smile of satisfaction on Taff’s face when he ate the food. From then on, my visits to the old house had a purpose, and I enjoyed every minute of the rest of my stay.
How did the writer feel about staying in the old house at first?

A.He was happy to be with his parents.
B.He enjoyed reading good books there.
C.He was pleased with the woods.
D.He felt very lonely.

The underlined word “inedible” is closest in meaning to “_______”.

A.too bad for him to eat B.nice to look at
C.not enough to eat D.as delicious as usual

The writer discovered the old man _______ the old house.

A.near the back door of B.in the dining room of
C.in the garden behind D.among the bushes before

What can we know about the old man from the passage?

A.He was poor and hungry.
B.He helped to repair the old house.
C.He liked to play hide-and-seek with the writer.
D.He raised many animals.

The story mainly tells us _______.

A.it’s nice to raise wild animals
B.it’s valuable to help others
C.it’s good to live in the forest
D.it’s comfortable to live in the old house


People can’t go to Sweet Tomatoes _______ for a meal.

A.on Wednesday B.on Friday
C.on Sunday D.on Monday

Mariah may call _______ to order the seats, because she lives in Ningyang.

A.(0538) 3270-9831 B.(0538) 3682-2366
C.(0538) 3866-8888 D.(0538) 3370-9531

Mr. and Mrs. White visited Sweet Tomatoes with two kids, Sara, age 7; Tom, age 4. They have to pay _______ for the meal.

A.110 B.120
C.150 D.180

What’s a “Coupon” used for?

A.To invite a friend. B.To save money.
C.To get a VIP card. D.To be a reader of China Daily.

Where would you probably read this passage?

A.In a story book. B.In a math book.
C.In a newspaper. D.In a geographic magazine.

Bikes are popular in the Dutch(荷兰). In fact, nearly half of all travel in the Dutch is by bike. Now, one Dutch bike designer(设计师), Thomas, has taken the country’s interest in bikes by making a school bus bike.
The big bike has eight sets of pedals(踏板) for kids, a driver seat for an adult, and three other seats, comfortably letting little kids for their trip to and from school. The bike even has a motor, which can help with high hills or at times when few kids on it.
So far, Thomas tells Fast Company, he’s sold 25 school-bikes, at a price of $ 25,000 each—less than it would cost to buy a traditional school bus with the same number of seats. Along with the traditional color, the bikes ,are colored yellow so that they can be seen easily.
Thomas says he’s sold school bus bikes to neighboring countries such as Belgium, England and Germany, but so far, the school bus bike hasn’t been sold in the United States. If the U.S. agrees to buy this kind of school bus bike, it could do a lot of good to improve exercise for a young age and help them keep healthy.

How do people in the Dutch usually go to work?

A.By car. B.By bus.
C.By bike. D.On foot.

How many seats does the school bus bike have?

A.Three. B.Eight.
C.Nine. D.Twelve.

The school buses are yellow in the Dutch because _______.

A.the color yellow is easy to paint
B.yellow buses can be seen easily
C.yellow is the national color of Dutch
D.it’s the designer’s favorite color

Which country of the following hasn’t bought a school bus bike?

A.America. B.Germany.
C.England. D.Belgium.

Which of the following is TRUE?

A.Thomas made a new kind of school bus.
B.A school bus usually costs $ 25,000.
C.Thomas sold bikes to Asian countries.
D.Riding school bus bikes helps keep kids healthy.

The first day of school, our professor introduced an old lady Rose to us.
“Why are you in college at such an age?” I asked her. She replied, “I always dreamed of having a college education and now I’m getting one!” We became friends quickly.
At the end of the term I invited Rose to make a speech to our football team. I’ll never forget what she taught us. She said, “There are some secrets of staying young and being happy. You have to laugh and find humor every day. You must have a dream. When you lose your dreams, you will die. There is a huge difference between growing old and growing up. Anybody can grow older. That doesn’t need any talent or ability. To grow up, you must always find the opportunity in change. Have no regrets. The people who are afraid of death are those with regrets.”
At the end of the year, Rose finished her college. One week after graduation, Rose died peacefully in her sleep. We would always remember the great woman.
From the passage, we can learn that Rose ________.

A.went to college at an old age
B.became a professor later
C.once worked in a hospital
D.died before college graduation

At the end of the term the writer invited Rose to ________.

A.go to a party B.play football
C.make a speech D.write a book

The underlined word “talent” in the third paragraph means “________” in Chinese.

A.训练 B.方法
C.途径 D.才能

If you want to stay young and be happy, ________, according to Rose.

A.never grow up
B.don’t be afraid of death
C.have a dream and never lose it
D.don’t find the opportunity in change

What is the best title of the passage?

A.Laughing every day
B.Never too old to learn
C.Growing old and growing up
D.How to stay young and being happy

Ironing a shirt is easy to learn. Just follow the steps in this short guide (指南), and you’ll learn how to iron your shirt properly with the help of the video. The most important thing is this: don’t try to iron a dry shirt.
● Get ready
You will need an iron, an ironing board and a bottle of water. Place the shirt on the ironing board. You can iron in whatever order you like, but most people like to start at the top — the collar. Have a bottle of water ready. Spray (喷) it onto the shirt to make it easier to iron.
● Do the ironing
First, iron the inside of the collar. Second, turn the collar over and iron the other side. Third, iron the back shoulders of the shirt. Fourth, iron the cuffs. Iron the inside, then the outside of the cuffs. Fifth, iron the sleeves. Sixth, iron the back of the shirt. Finally, iron the front of the shirt. Do one side, and then do the other side.
● Dry the shirt
Check your shirt and iron it again if you need to. Now put your shirt on a hanger and let it dry.

What’s the most important thing if you want to iron a shirt?

A.Have a bottle of water ready.
B.Don’t try to iron a dry shirt.
C.Wash your shirt carefully.
D.Place the shirt on the ironing board.

You will need all of the following things EXCEPT ________ before you iron a shirt.

A.a ruler B.an iron
C.an ironing board D.a bottle of water

Most people like to start with ironing ________ of a shirt.

A.the sleeves B.the back shoulders
C.the cuffs D.the collar

How many steps are there to do the ironing, according to this guide?

A.Five. B.Six.
C.Seven. D.Eight.

The writer tells us it’s easy to learn how to iron a shirt by ________.

A.reading a book B.watching a video
C.listening to the radio D.reading the newspaper

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