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. yellowAccording 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
阅读下面的短文，判断文后的句子是否与短文内容相符，符合的选T 不符合的选F（共4小题，每小题2分）
Life in 2050
What will life be like in the year 2050? No one knows, but of course it will be very different from it today Here are some predictions:
Firstly, people will work fewer hours, and robots will do hard and dangerous work instead.So they will have more free time for sports and travelling.
Secondly, cars, will run faster, and computers will control(控制) the speed instead of people. So there won't be any accidents.
Thirdly, people will be able lo live in the sea. away from the crowded and noisy cities on land.
Lastly, water will have become one of our most serious problems because there could be serious shortage(短缺). Some scientists open predict that water could be the cause of war if we don'i act now.
Hundreds of years ago, news was carried from place to place by people on foot or by horse. It took days, weeks and sometimes months for people to receive news. Now it is possible to send words and pictures around the world in seconds(秒). Billions of people learn about news stories of their own country and all over the world every day, either by watching TV or reading newspapers.
Newspapers have been an important part of everyday life since the 18th century. Many countries have hundreds of different newspapers. How do newspaper editors(编辑) decide which news stories to print (印刷)? Why do they print some stories and not others? What makes a good newspaper story?
Firstly, it is important to report new stories. TV stations can report news much faster than newspapers. Yet, newspapers give more about the same story. They may also look at the story in another way, or they may print completely (完全地) different stories to those on TV.
Secondly, a news story has to be interesting and unusual. People don’t want to read stories about everyday life As a result, many stories are about some kind of danger and seem to be "bad" news. For example, newspapers never print stories about planes landing safely, instead they print stories about plane accidents.
Another factor(因素) is also very important in many news stories. Many people are interested in news in foreign countries, but more prefer to read stories about people, places and events (事件) in their own country. So the stories on the front page in Chinese newspapers are usually very different from the ones in British, French and American newspapers. According (根据) the passage, how do people learn about news stories in the world now?
| A．They carry news stories and tell others from place to place oh foot or by horse. |
| B．They tell each other what they have seen with their eyes. |
| C．They watch TV or read newspapers. |
| D．They listen to the radio every day. |
The difference between newspaper stories and TV news reports is that .
| A．people can learn more about the same news story from a newspaper |
| B．people can read the news story more quickly in a newspaper |
| C．people can read news stories in other countries |
| D．people can read news’ stories about their own country |
To make a good newspaper story, how many factors does the passage talk about?
| A．Two. | B．Three. | C．Five. | D．Six. |
According to the passage, which of the following can you most possibly watch on TV?
| A．You often play football with your friends after school. |
| B．Your teacher has got a cold. |
| C．A tiger in the city zoo has run out and hasn’t been caught. |
| D．The bike in the front of your house is lost. |
Which of the following is Not True of this passage?
| A．News stories on the front page of every country are always the same. |
| B．People like to read interesting and unusual news. |
| C．Not only TV but also newspapers can help people to learn what is happening around the world. |
| D．Newspapers have been an important part of everyday life for more than three hundred years. |
根据图示所提供的信息选择最佳答案： The city of Miramichi is in the _______ part of New Brunswick.
A. eastern B. southern C. westernThe map shows there are _______ cities that have both harbors and airports in New Brunswick.
A. three B. six C. nineFrom the map, the distance from Boston to Bathurst is _______ that from Boston to Saint John.
A. shorter than B. longer than C. as long asNew Brunswick is in _______ according to the information above.
A. the USA B. Brazil C. CanadaWhich of the following is NOT true according to the map above?
A. There is only one transportation style in New Brunswick.
B. If you travel from Moncton to Edmundston, you can go there by plane.
C. Washington D. C. is to the south of Ottawa.
In 1961, a man found a strange cat on his farm in Scotland. The cat’s ears were folded, bent forward, on its head. In fact, this was a new kind of cat. People named it the "Scottish Fold(苏格兰折耳猫)".
The Scottish Fold has a round head and large eyes. Its neck and legs are short, which makes it look very cute. Interestingly, all the Scottish Folds are born with straight and unfolded ears. And when they are growing up day by day, some cats’ ears will begin to fold. So, the Scottish Fold comes in two types: folded ears and straight ears.
Besides, there is a nickname for the Scottish Fold. It is the " Messenger of Peace". Why?
Because the Folds are sweet and friendly animals. They can get along well with other cats. And
unlike some other cats, they can even get along well with dogs! In many different environments, such as at a noisy house, or in a cat show, you can see them playing with other animals happily.
Well, when you come to a new school, do you think it’s difficult to adapt to the new environment? Perhaps you can learn from the Scottish Fold. That is: always be sweet and friendly to others.Tie Scottish Fold _____.
| A．is born with folded ears | B．is born with straight ears |
| C．always has folded ears | D．always has straight ears |
What does the Scottish Fold look like?
| A．It has a round head and large eyes. | B．Its neck and legs are short. |
| C．It looks very cute. | D．All above. |
Why are the Scottish Folds named the " Messenger of Peace" ?
| A．Because their ears are folded. |
| B．Because they look very cute. |
| C．Because they can get on well with other animals. |
| D．Because they can stay at a noisy house or in a cat show. |
According to the passage, what is the writer’ s suggestion to us when we are in a new
environment?
| A．We should have a nickname. | B．We should learn from the cats. |
| C．We should get along well with dogs. | D．We should always be sweet and friendly to others. |
How many parts does the book have?
| A．1 | B．4 | C．18 | D．233 |
If you’re interested in shopping you can read _____.
| A．Chapter 3 | B．Chapter 8 | C．Chapter 16 | D．Chapter 18 |
The book does NOT include _____.
| A．help with European languages |
| B．information about visas |
| C．ideas about what to take on a trip |
| D．a section about traveling with pets |
请阅读一篇短文, 然后从所给选项中选出正确信息。（共5分，每小题1分）
People love oranges. They are sweet and juicy. They are in sections so it’s easy to eat them. Some oranges don’t have any seeds. Some have a thick skin and some have a thin skin.
The orange tree is very beautiful. It has a lot of shiny green leaves. The small white flowers smell very sweet. An orange tree has flowers and fruits at the same time.
There were orange trees forty hundred years ago. The oranges were very small, not like the ones today. The earliest orange trees probably came from China. Many different kinds of oranges are raised there today.
Farmers in other parts of Asia and the Middle East learned to raise oranges from the Chinese. Then they taught Europeans. The Spanish planted orange trees in the New World (North and South America) and took them to Florida first.
“Orange” is both a fruit and a color. The color of oranges is so beautiful that in English we use the name of the fruit for its color Why do people like eating oranges?
A. No seed. B. Its color. C. Sweet and juicy.What’s the reason that people eat oranges easily ?
A. Thin skin B. Thick skin C. In sectionsWhat color are orange flowers?
A. White. B. Orange. C. Green.Where did the earliest orange trees probably come from?
A. China. B. The Middle East. C. North and South America.Who took orange trees to Florida first?
A. The Chinese. B. The Spanish. C. The American.
Have you ever rubbed your hands together when they get cold? Why do we do that? We do that for friction. Friction happens when two things that aren’t very smooth rub together to make heat energy. The faster you rub two things together, the more friction (and heat) you can make. Let’s discover friction!
| WHAT YOU’LL NEED: ● Soap ● Water ● Your hands! WHAT TO DO: 1. Make sure your hands are dry. 2. Rub your hands together until you feel the heat of your hands. 3. Now, use soap and water to get your hands very slippery (滑的). 4. Try to make friction happen while your hands are slippery. 5. Please write down what has happened. LET’S TALK! Friction is an energy that happens when two things rub together. When friction happens, it makes heat! When your hands are slippery, they won’t make very much friction and your hands won’t get so hot. DID YOU KNOW? 1. Friction happens when you stop your fast running bike. 2. Ancient people made fires by rubbing two pieces of wood together. Friction happened though they didn’t know it. ? Friction is everywhere. Have you ever noticed situations where friction is happening? If not, ask your parents to take you out in a car. If it is not too hot, touch the tires (轮胎) of the car before and after a short drive to see how much warmer they get from friction. |
根据表格内容，选择正确答案。 You’d better make your hands to get heat when you rub them.
| A．slippery | B．dry | C．wet | D．smooth |
What does the word “friction” in this text mean in Chinese?
| A．摩擦 | B．冷却 | C．膨胀 | D．震动 |
is NOT an example of friction.
| A．Bike riding | B．Car driving | C．Hands rubbing | D．Friction discovering |
What’s the last column (栏目)?
| A．THINK IT OVER! | B．WHAT HAPPENED? |
| C．EVERYDAY ACTION: | D．WORK WITH PARENTS! |
This text is most probably .
| A．a science report | B．a car advertisement |
| C．a rubbing introduction | D．a chemistry programme |
Welcome to this short tour of London. In this square we are standing in the middle of London. Opposite 对面) is the National Gallery, a museum with lots of famous paintings. Go along the red street to Buckingham Palace. The queen (后) lives here.
Turn left and go to the Houses of Parliament and Big Ben. Opposite you can see the London Eye. It takes you 135 meters above the River Thames. You can see most of London on a clear day.
When you are tired, the best way to see London is by boat. You can get the boat near Big Ben. As you go along the river, the London Eye is on your right, near the Railway Bridge.
Get off the boat at Tower Bridge. Then you can see the Tower of London next to the bridge. The Tower of London is the city’s oldest palace. It is nine hundred years old.
Take the boat back along the river. Get off the boat and go past the station and walk along the street. Opposite is the old fruit and vegetable market. They don’t sell fruit and vegetables now. There are stores and restaurants, and lots of street musicians. Turn left into King’s Street, and go past the church. You’re now back where you started, at the square. Now you finish your tour.If you go to visit the National Gallery, what will you find?
| A．lots of lovely animals | B．lots of valuable plants |
| C．lots of famous paintings | D．lots of interesting books |
Where can you get the boat?
| A．Near Buckingham Palace. | B．Near Big Ben. |
| C．Near Tower Bridge. | D．Near King’s Street. |
______ is London’s oldest palace.
| A．The Tower of London | B．The National Gallery |
| C．Buckingham Palace | D．The Houses of Parliament |
You will not go past ______ on your way back.
| A．the station | B．the square | C．the park | D．the church |
Do you plan to go to Hong Kong Disneyland with your family this summer? If your dad smokes, you may have to ask him to be careful. From January 1st, Hong Kong banned（禁止）smoking in most public places.
These places include restaurants, workplaces, schools and so on. Even smoking in some outdoor places is not allowed, for example, beaches, sports ground, museums and most areas of public parks.
Hong Kong hopes the ban can stop passive smoking. What is passive smoking? When people smoke in a restaurant or on a bus, others have to smoke too. They don’t want to smoke but they have no choice. This is passive smoking. It is bad for people’s health.
And it’ll be better if more people in Hong Kong give up smoking because of the ban. Jack Lee, a 26-year-old student says, “The ban is really good. I don’t like people smoking next to me. It’s so smoky and smelly.”
If someone breaks the ban, he will be fined HK$5,000.
Hong Kong is not the first Asian city to have a smoking ban. On January 1, 2006, Singapore banned smoking in most public places. Smoking is not allowed in Hong Kong .
A. in indoor places B. in most public places C. at home Which outdoor place is not mentioned in the passage?
A. The park B. The beach C. The airport What’s the purpose of the smoking ban in Hong Kong ?
A. To stop passive smoking.
B. To stop the sale of cigarettes.
C. To stop people from smoking. The example in Paragraph 4 shows (证明)that .
A. Jack Lee likes smoking very much B. people in Hong Kong support the ban
C. Jack Lee is used to smoking What’s the Chinese meaning of the underlined word “fined”?
A. 罚款 B. 给予 C. 奖励
In a surprising result, the No. 69 Middle School girls’ football team yesterday beat their school’s boys’ team. The boys’ team often helped the girls with their training (训练). They had never lost to the girls before, but this time the girls beat them 4 — 3.
After the game, Wu Nai, head of the boys’ team, was very unhappy. "We all thought this would be an easy game," he said. "We never thought a team of girls could beat us. This is the saddest day of my life. "
But Mr Hu, the boys’ PE teacher, said he thought the girls should win. "The boys were too confident (自信)," he said. "I told them before the match that they needed to play well. They all thought that girls’ football was a joke. Now they know better. They didn’t play carefully, and they lost."
The match had started well for the boys. After 30 minutes, they were winning 2 - 0. Their best player, Lu Ming, scored in the thirtieth minute. Earlier, the mid-field player, Ma Zhengquan, had scored the first goal in only the second minute of the match.
After the first half hour, the boys seemed to become too confident. At first, the girls had felt a bit nervous (紧张), but then they became more and more confident. Just before half time, Li Xiaolin made the score 2 - 1.
In the second half, the boys were the first to score. It was from Lu Ming. After that the boys became lazy, but the girls kept on working hard. Hao Meiling scored in the 68th minute, to make the score 3 — 2. Then Li Xiaolin scored twice in the last six minutes to make the last score 4-3. It was a surprising finish.
The girls’ PE teacher, Miss Wang, was very pleased with their work. "They were great!" She said. "I told them they could win. I told them that the most important thing was teamwork. The boys’ team had some good players, but my girls were a better team!" Who scored the first goal in the match?
| A．Lu Ming. | B．Ma Zhengquan. | C．Li Xiaolin. | D．Hao Meiling. |
How many goals did Li Xiaolin score?
| A．One. | B．Two. | C．Three. | D． Four. |
Why could the girls’ team beat the boys’ in the football match?
| A． Because the boys’ team helped the girls with their training. |
| B． Because the boys had never lost to the girls before. |
| C． Because the boys’ team won the first half. |
| D． Because the girls played together better and worked harder. |
Which of the following is right?
| A． The girls made only one goal in the first half. |
| B． The girls even made 3 more goals than the boys in the second half. |
| C． Many people thought the girls could beat the boys before the match. |
| D． The girls’ team had some better players than the boys’. |
Choose the right order according to the passage.
a. The girls’ PE teacher told them that they could win.
b. Wu Nai, head of the boys’ team was very unhappy.
c. The match started well for the boys.
d. The girls kicked the second goal in the match.
| A． a-b-c-d | B． b-c-d-a | C． d-c-a-b | D． a-c-d-b |
A doctor was once teaching a class of medical students at a famous hospital in Edinburge. An injured man was brought in, and the doctor turned to one of his students and asked him, “What’s wrong with this man ?”
“I don’t know, sir,” the student answered. “Shall I examine him and find out?”
“There’s no need to examine him,” said the doctor. “You should know without asking questions. He has hurt his right knee. Didn’t you notice the way he walked? He hurt it by burning it in the fire. You see his trousers leg is burnt away at the knee. This is Monday morning. Yesterday was fine, but on Saturday the roads were wet and muddy. The man’s trousers are muddy all over. The man fell down on Saturday night.”
The doctor then turned to the man and said, “You had your pay on Saturday and went to a public house and drank too much. You got muddy and wet on the way home. Because you had drunk too much, you fell on the fire and burnt your knee. Is that right?
“Yes, sir,” said the man. The medical students were having a lesson ______.
| A．at the library | B．in a classroom |
| C．at a well-known hospital | D．in a medical school |
The man hurt his knee _______.
| A．on Monday | B．on Sunday night | C．on Saturday night | D．yesterday |
How did the doctor know that the man burnt his knee?
| A．From the way he walked. | B．By seeing his trousers leg is burnt away at the knee. |
| C．By seeing the man’s trousers are muddy all over. | D．Both A and B |
Which is the right order according to the passage?
① He burnt his knee. ②He got drunk. ③He fell down and got muddy. ④He had his pay.
| A．①②③④ | B．④③②① | C．③④①② | D．④②③① |
From the passage we know that _______ is very important for medical students.
| A．watching and thinking | B．taking good care of others |
| C．learning from others | D．teaching |
Most people around the world are right-handed. This also seems to be true in history. In 1799, scientists studied works(作品) of art made at different times from 1, 500 B. C. to the 1950s. Most of the people shown in these works are right-handed, so the scientists guessed that right-handedness has always been common through history. Today, only about 10% to 15% of the world’s population is left-handed.
Why are there more right-handed people than left-handed ones? Scientists now know that a person’s two hands each have their own jobs. For most people, the left hand is used to find things or hold things. The right hand is used to work with things. This is because of the different work of the two sides of the brain (大脑). The right side of the brain, which makes a person’s hands and eyes work together, controls(控制) the left hand. The left-side of the brain, which controls the right hand, is the centre for thinking and doing problems. These findings show that more artists should be left-handed, and studies have found that left-handedness is twice as common among artists than among people in other jobs.
No one really knows what makes a person become right-handed instead of left-handed. Scientists have found that almost 40% of the people become left-handed because their main brain is damaged(损害) when they are born. However, this doesn’t happen to everyone, so scientists guess there must be another reason (原因) why people become left-handed. One idea is that people usually get right-handed from their parents. If a person does not receive the gene (基因) for right-handedness, he/she may become either right-or left-handed according to the chance (偶然性) and the people they work or live with.
Though right-handedness is more common than left-handedness, people no longer think left-handed people are strange or unusual. A long time ago, left-handed children were made to use their right hands like other children, but today they don’t have to. After studying works of art made at different times in history, the scientists found .
A. the art began from 1, 500 B. C.
B. the works of art ended in the 1950s
C. most people shown in the works of art are right-handed
D. most people shown in the works of art are left-handed How many people in the world are left-handed now?
| A．Less than one sixth. |
| B．More than a half. |
| C．About 40%. |
| D．The passage doesn’t tell us. |
What is the left hand for most people used to do?
| A．It’s used to find or hold things. |
| B．It’s used to work with things. |
| C．It’s used to make a person’s eyes work together. |
| D．It’s the centre for thinking and doing problems. |
According to (根据) the passage, which of the following is NOT true?
| A．No one really knows what makes a person become right-handed. |
| B．Left-handedness is cleverer than right-handedness. |
| C．Today children are not made to use their right hands only. |
| D．Scientists think there must be some reason why people become left-handed. |
The best title(标题) for this passage is .
| A．Scientists’ New Inventions |
| B．Left-handed People |
| C．Which Hand |
| D．Different Brains, Different Hands. |
What is Mary’s problem?
| A．Sh.e is so worried and can’t sleep. | B．She can’t pass the exam. |
| C．She can’t communicate with others. | D．She can’t study English well. |
Donna thinks Mary’s problem is __
| A．great | B．common | C．wonderful | D．serious |
The word "reduce" in the passage probably means
| A．减少 | B．排除 | C．加强 | D．增加 |
Donna thinks that can help Mary think more clearly.
| A．eating a lot of sugar | B．studying six hours every day |
| C．drinking a lot of coffee | D．eating foods high in Vitamin B |
Which of the following is TRUE according to Donna’s letter?
| A．The best time to study is from 10 pm to 1 am. |
| B．Walking outside can make you remember more. |
| C．It’s good to tell a study partner about your feeling. |
| D．It’s necessary to have a rest for 15 to 20 minutes an hour. |
In the United States, parents usually encourage their children to develop their potential (潜能). They pay attention to what their kids can do, not what they can’t. As a result, US boys and girls hope to be actors, athletes and doctors; many even want to become presidents when they grow up.
US parents often encourage their children to take part in all kinds of activities at school. They believe that joining in these activities can make their children mature(成熟). Schoolwork is important, but they think that social skills are important as well.
But things in China are different. Chinese parents often tell their children to study hard and pass exams. They think that, for a student, staying away from schoolbooks means wasting time. This puts a lot of pressure on Chinese students, so leaders in China’s education department have called for less homework at the lower grades. Only healthy kids can become healthy adults.American parents think that .
| A．Schoolwork is as important as social skills |
B．Schoolwork is more important than social skills |
C．Schoolwork is less important than social skills |
D．Passing exams is the most important for their children |
Why do many American children have their dream jobs?
| A．Because they start school earlier than Chinese children. |
B．Because they study hard. |
C．Because their parents encourage them to do less homework. |
D．Because their parents usually pay attention to what they can do，not what they can’t. |
Chinese parents think that .
| A．taking part in all kinds of activities at school can make their children mature |
B．staying away from schoolbooks means wasting time |
C．their children should do what they want to do |
D．social skills is necessary for the students at lower grades |
According to this passage the writer thinks .
| A．China’s education is better than America’s |
B．America’s education is better than China’s |
C．Chinese students at the lower grades should have more homework |
D．Chinese students have less pressure than America’s |
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