How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses how long and how well you brush, and it lets you track your performance on your phone.
The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless connection.
The toothbrush will be able to teach you to brush right(don’t forget the insides of the teeth!)and make sure you’re brushing long enough.“It’s kind of like having a dentist actually watch your brushing on a day-to-day basis,” says Thomas Serval, the French inventor.
The toothbrush will also be able to talk to other applications on your phone, so developers could, for instance, create a game controlled by your toothbrush. You could score points for beating monsters among your teeth.“We try to make it smart but also fun,” Serval says.
Serval says he was inspired by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said“yes,” but Serval would find their toothbrush heads dry. He decided he needed a brush that really told him how well his children brushed.
The company says the Kolibree will go on sale this summer, for $99 to $199,depending on features. The U.S.is the first target market.
Serval says that one day, it’ll be possible to replace the brush on the handle with a brushing unit that also has a camera. The camera can even examine holes in your teeth while you brush.Which is one of the features of the Kolibree toothbrush?
| A．It can sense how users brush their teeth. |
| B．It can track users’ school performance. |
| C．It can detect users’ fear of seeing a dentist. |
| D．It can help users find their phones. |
What can we learn from Serval’s words in Paragraph 3?
| A．You will find it enjoyable to see a dentist. |
| B．You should see your dentist on a day-to-day basis. |
| C．You can brush with the Kolibree as if guided by a dentist. |
| D．You’d like a dentist to watch you brush your teeth every day. |
Which of the following might make the Kolibree toothbrush fun?
| A．It can be used to update mobile phones. |
| B．It can be used to play mobile phone games. |
| C．It can send messages to other users. |
| D．It can talk to its developers. |
What is Paragraph 5 mainly about?
| A．How Serval found out his kids lied to him. |
| B．Why Serval thought brushing teeth was necessary. |
| C．How Serval taught his kids to brush their teeth. |
| D．What inspired Serval to invent the toothbrush. |
Everybody knows that words can carry messages. People communicate with words. Books, magazines, TV, radio and films all help us to communicate with others. They all help us to know what is going on in the world and what other people are thinking about.
Do you think you can communicate without words? A smile on your face shows you are happy or friendly. Tears in your eyes tell others that you are sad. When you put up your hand in class, the teacher knows you want to say something or ask a question. You shake your head, and people know you are saying “No”. You nod and people know you are saying “Yes”.
Other things can also carry messages. For example, a sign at the bus stop helps you to know which bus to take. A sign on the wall of your school helps you to find the library. Signs with arrows on doors tell you where to go in or out. Have you ever noticed that there are a lot of signs around you and that you receive messages from them all the time?
People can communicate in many ways without words. For example, an artist can use his drawings to tell about beautiful mountains, about the sea and many other things. Which of the following statements is NOT true?
| A．It is a most popular way for man to communicate with words. |
| B．Words are the only way for man to communicate. |
| C．Using radio is one of the ways for man to communicate. |
| D．TV can help people to know the world better. |
Besides words, which can also be used to express oneself?
| A．Sign language. | B．Smile. |
| C．Head shaking. | D．Nodding. |
Which of the following signs is usually used to show you the direction?
| A．Picture. | B．A number. |
| C．A kind of color. | D．An arrow. |
According to the passage, how does an artist often express himself?
| A．He writes articles. | B．He gives reports. |
| C．He sings songs. | D．He draws pictures. |
Our school library offers learning services, books and other things that help all members of the school to become good thinkers and clever users of information. It is linked (连接) to the larger library in the city and the World Wide Web. All these services are given according to the requirements of the Public Library Manifesto (声明).
School library services must be given to all members of the school. Students of any age, class and grade can enjoy them. Different services must be given to those who are unable to use the main library services.
Users of the library must follow the rules made by the library workers to keep it clean and tidy. The main rules are as follows:
1. Opening and closing times:
Monday —Friday: 9 a.m. —9 p.m. during term time.
Saturday: 9 a.m. —1p.m. throughout the year.
2. Admission (允许进入) and borrowing:
Only people holding a library card shall be allowed in.
Members can borrow 5 books at a time.
3. Behavior in the library:
Silence shall be kept as much as possible in the library. No other books can be taken into the library. Library workers can help members use the books and other things in the library.
When the library workers and teachers work together, students will get better reading, writing, and problem-solving skills. What can students do in the school library?
| A．Get information from the Internet. | B．Read the Public Library Manifesto. |
| C．Clean the library with workers. | D．Work together with the teachers. |
When can students read in the library?
| A．8 a.m. to 5 p.m. on Monday. | B．10 a.m. to 12:30 p.m. on Saturday. |
| C．9 a.m. to 9 p.m. on Sunday. | D．9 a. m. to 10 p.m. on Tuesday. |
What is the main aim of the school library services?
| A．To help readers communicate with each other. |
| B．To help teachers work with the library workers. |
| C．To help students develop good behaviors in the library. |
| D．To help the users get more knowledge and skills. |
How many books can you borrow at a time ?
| A．one | B．two | C．four | D．five |
One day a rabbit ran into an elephant. "Hello," said the rabbit. "Fine day, isn’t it?" The elephant stopped to look down at the tiny(小的) creature and shouted. "Leave me alone. I don’t have the time to waste on someone so small." The rabbit was shocked by the elephant’s words. Then he decided to ask the whale(鲸鱼) what she thought about the elephant’s rudeness. But the whale laughed at this tiny animal. The rabbit said, "You think that I am weak, but in fact, I am strong! I can beat you at Tug-of-War (拔河比赛)."The whale looked at him for a moment before bursting into laughter. "Very well, little one. Go and get a rope," she said.The rabbit ran off to find a strong and thick rope. Then he went to the elephant, "Elephant, I will beat you at a game of Tug-of-War." The elephant laughed loudly, but agreed to challenge the tiny animal. He tied the rope around his huge waist. The rabbit took the other end and ran away. He called back to the elephant, "When I say 'pull’, you start pulling. "The rabbit took the other end of the rope to the whale, "Tie this to your tail and when I say 'pull’，you swim." The whale tied the rope to her tail after laughing at the rabbit’s foolishness. Then the rabbit called out "PULL!" The elephant and the whale began pulling. After a while, they were too tired to continue. The elephant and the whale never knew how such a tiny creature could beat them. But from that day on, they said "hello" to the little rabbit with great respect whenever they met.Why did the rabbit want a game of Tug-of-War?
| A．He wanted to show he was the best. |
B．He knew that he could do well in this game. |
C．He wanted to get respect from the elephant and the whale. |
D．He wanted to prove he wasn’t the tiniest animal. |
What do you think of the rabbit according to the story?
| A．Smart and brave. | B．Tiny and stupid. |
C．Pride and naughty. | D．Poor and weak. |
Why did the elephant and the whale lose the game?
| A．They didn’t prepare for it. |
B．They were not as strong as the rabbit. |
C．They were too impolite to the little rabbit. |
D．They actually fought with each other but not the rabbit. |
Which statement is TRUE according to the passage?
| A．The elephant was pleased to talk to the rabbit at first. |
B．It was the whale who suggested having a game of Tug-of-War. |
C．The rabbit was stronger than both the whale and the elephant. |
D．The whale and the elephant began to respect the rabbit from then on. |
My basketball coach at Princeton used to say, "On the court, you can tell who is selfish(自私的)." When my sister Michelle brought Barack Obama home to meet the family, she said to me, "I want you to take him out to play, to see what type of man he is when he’s not around me." So I invited Barack to play basketball with a few friends of mine. I was very nervous although I had already met Barack a few times. I was thinking this guy seemed like a good guy. We played a hard five-on-five. He was thin but not weak. He played extremely left-handed. He dealt with everything perfectly. He wasn’t the best guy out there or the worst guy. I liked the fact that he was confident but wasn’t proud. Barack was very team-oriented (有团队精神的), very unselfish. He played as if he was one of us —he wasn’t trying to be president of Harvard Law Review. But the best part about it was that when we were on the same team, he did not pass me the ball each time. He wasn’t trying to suck up to my sister through me. I was glad to give my sister the good news, "Your boy is straight." He isn’t selfish, which is the greatest praise you can give both a player and a leader. America has got a guy who is running a government in an efficient (有效率的) mann
er. That’s the same guy I got to know playing basketball when he was visiting my family.
Why does the author begin the passage with his coach’s words?
| A．He wants to remember and thank his coach. |
B．He wants to show that he is a basketball player. |
C．He wants to tell his sister about the words. |
D．He wants to use the words to test a person. |
Why did Michelle ask the author to take Barack to play basketball?
| A．To see whether he was confident. |
B．To see whether he was good at sports. |
C．To see whether he was selfish or not. |
D．To see whether he could get along with others. |
During the basketball game, Barack ______.
| A．played best all the time | B．was strong enough to play |
C．was not confident | D．wanted to be the team leader |
The underlined phrase in the third paragraph can be replaced by "______".
| A．please （使满意） | B．know about | C．help | D．look for |
In the Caucasus region of the Soviet Union, nearly 50 out of every 100,000 people live to celebrate their 100th birthday, and many don’t stop at 100! By comparison, in America only 3 people in 100,000 reach 100. But these Soviet old people aren’t alone. The Pakistani Hunzas, who live high in the Himalaya Mountains, and the Vilacbambans of the Andes Mountains in Ecuador seem to share the secret of long too.
These peoples remain healthy in body and spirit despite the passage of time. While many older persons in industrial societies become weak and ill in their 60s and 70s, some Soviet Georgians, aged 110 to 140, work in the fields beside their great- great- grandchildren. Even the idea of aging is foreign to them. When asked, “At what age does youth end?”, most of these old people has no answer. Several replied, “Well, perhaps at age 80.” The very youngest estimate was age 60.
What accounts for this ability to survive to such old age, and to survive so well? First of all, hard physical work is a way of life for all of these long-lived peoples. They begin their long days 
of physical labor as children and never seem to stop. For example, Mr. Rustam Mamedov is 142 years of age. He remember his life experiences: the Grimean War of 1854; the Turkish War of 1878; the Bolshevik Revolution in 1917. His wife is 116 years old. They have been married for 90 years. Mr. Mamedov has no intentions of retiring from his life as a farmer. “Why? What else would I do?” he asks. Oh, he has slowed down a bit. Now he might quit for the day after 6 hours in the field instead of 10.
All these people get healthful rewards from the environment in which they work. They all come from mountainous regions. They live and work at elevations of 5,000 to 12,000 feet (1,660 to 4,000 meters) above sea level. The air has less oxygen and is pollutionfree. This reduced-oxygen environment makes the heart and blood vessel system stronger.
Another factor that may contribute to the good health of these people is their isolation. To a great ext
ent, they are separated from the pressures and worried of industrial society.
Inherited factors also play some role. Most of the longest-lived people had parents and grandparents who also reached very old ages. Good family genes may, therefore, be one factor in living longer.
Finally, although these three groups don’t eat exactly the same foods, their diets are similar. The Hunzas, Vilacbambans, and Soviets eat little animal meat
. Their diets are full of fresh fruits, vegetables, nuts, grains, cheese, and milk. They never eat more food than their bodies need.
It is clear that isolation from urban pressures and pollution, clean mountain air, daily hard work, moderate diets, good genes, and a youthful approach to life all contribute to the health and remarkable long life of all these people. What kinds of things contribute to the remarkable long life of these peoples?
| A．Moderate diets | B．Clean mountain air. |
| C．Daily hard work. | D．All the above factors（因素）. |
How do you think the author feels about these long-lived people?
| A．He is impressed with them | B．He doesn’t care. |
| C．He doesn’t like them. | D．He admires them. |
According to the passage, the phrase “the passage of time” means .
| A．have time to do what they want | B．being on time |
| C．time going by | D．limited time |
In the passage, why does the author describe Mr. Mamedov?
| A．An example of a typical long life among these people. |
| B．An example of an unusual long life among these people. |
| C．An explanation of why he is still healthy. |
| D．An example of why his wife died early than him. |
What is the main subject of this article?
| A．Mr. Mamedov’s life. |
| B．A description of several societies where people live a long time. |
| C．Suggestions for how you can live long life. |
| D．People are healthy in mountainous regions. |