If you look around the room you are in right now, you’ll probably notice a number of electronics. But can you imagine if they all had to be joined together by wires (电线)? Picture the wire snaking along the floor, for example, from your smartphone to your speaker, or connecting your game controller to the computer screen, meaning you could never sit more than a couple of meters away from it. A world of electronics connected by wires wouldn’t just be untidy, but a possible danger, too. That’s where Bluetooth comes in. We’ve all heard of it — but what exactly is it?
Bluetooth is a method of short-distance (短距离) wireless communication between electronics that makes use of the power of radio waves. The idea was first thought of by Dr. Janp Haartsen at Swedish mobile company Ericsson in 1994. Things really stepped up in September 1998 when the Bluetooth Special Interest Group (SIG) was set up to develop and spread the technology. Bluetooth 1.0 came out in 1999,and a year later it began to be used in mobile phones and desktop computers. Now Bluetooth has become an increasingly popular way of solving the problem of more and more electronics needing to be connected. without having to connect everything together with wires.
But if you look at the remote control (温控器) you use to choose the program on TV, you might rightly ask yourself why Bluetooth was such a big deal. After all, connecting objects with infrared signals (红外信号) which can’t be seen had been done before. The problem with remote controls is that they need to keep what is called “line of sight”. If something is standing between the remote control and receiver, it won’t work. Because Bluetooth uses radio waves, the things standing in the way are no longer a problem.
Since its creation in the late 1990s, the technology has become more and more improved and widely used, with the 4 billionth Bluetooth objects shipped in 2020.
(1). How does the writer lead in the topic “Bluetooth” in Paragraph 1?
| A． |
By describing scenes. |
B． |
By comparing facts. |
C． |
By telling stories. |
D． |
By explaining reasons. |
(2). With the setting up of SIG, Bluetooth ________.
| A． |
started to be used in cars |
B． |
made radio waves known to people |
| C． |
improved and spread quickly |
D． |
was able to connect all electronics |
(3). From Paragraph 3, we mainly get to know the ________ of Bluetooth.
| A． |
development |
B． |
popularity |
C． |
standard |
D． |
advantage |
(4). ________ will most probably be interested in this text.
| A． |
Phone sellers |
B． |
Technology fans |
C． |
Newspaper reporters |
D． |
History lovers |
We can see _______ in the butterfly exhibition .
| A． some paintings . |
| B． some pictures of butterflies only . |
| C． some beautiful butterflies . |
| D． some pictures of the towns from all over the world . |
You are going to see the exhibition with your 14 –year –old daughter , you will have to pay __________ .
| A． 15 yuan | B． 20 yuan |
| C． 25 yuan | D． 35 yuan |
. We can book group tickets ____________ .
| A． by making a phone call |
| B． by sending an e –mail |
| C． by writing a letter |
| D． by filling in an application form |
There are 45 students in our class . How much will they pay if they visit the exhibition ?
| A．￥ 675 | B．￥ 450 | C．￥900 | D．￥400 |
If you go to the exhibition on 1 st , May , you can get ___________ .
| A． a book | B．a ticket |
| C． a butterfly | D．a present |
Although 19-year-old George Dennehy is armless, he isn’t letting that stop him from pursuing (追求)his dreams and sharing his passion(激情) with the world.
Born without arms, the young boy’s birth parents left him. Luckily, a warm-hearted couple adopted him and took good care of him. However, his new parents never allowed him to use his disability as an excuse to be lazy. When George turned eight, they asked him to sign up（报名） for cello（大提琴） lessons. The instrument (乐器)is tough even for people who have the use of both their hands, so it was even more challenging for George, who had to learn to play it with his feet.
Thanks to his music teacher, the young boy not only mastered the cello, but also realized that he had a passion and talent for music. During middle school years, he also mastered the piano and guitar.
His music talent caught the eye of an American rock band who invited him to perform alongside them at a ten-day-long music festival.
The experience has inspired（激励） this once shy boy to pursue a career（事业） in music. He has also become a motivational（励志的） speaker who encourages both able and disabled people to pursue their dreams, no matter how impossible these dreams may sound.
Geoge Dennehy is armless, he isn’t letting that stop him from pursuing his dreams and sharing his passion with the world.
When did George Dennehy begin to learn play the cello?
| A．at the age of 19 | B．at the age of 8 |
| C．when he began to go to school. | D．We don’t know |
With whose help , George Dennehy realized that he had a passion and talent for music?
| A．His adoptive parents | B．His birth parents |
| C．His teacher | D．An American rock band |
What’s the meaning of the underlined word ?
| A．接受 | B．照顾 | C．发现 | D．收养 |
How many instruments did George Dennehy master according the passage?
| A．1 | B．2 . | C．3 | D．4 |
What’s the best title ?
| A．Follow your dreams | B．A poor boy |
| C．An armless boy | D．Challenge |
Different countries have different customs. When you travel to another country, please follow their customs, just as the saying goes, “ .”
Very often people who travel to the United States forget to tip （付小费）. It is usual to tip porters who help carry your bags, taxi drivers and waiters. Waiters expect to get a 15% tip on the cost of your meal. Taxi drivers expect about the same amount.
In England, make sure to stand in line even if there are only two of you. It’s important to respect lines there. It’s a good idea to talk about the weather. It’s a favourite subject of conversation with the British.
In Spain, it’s a good idea to have a light meal in the afternoon if someone invites you for dinner. People have dinner very late, and restaurants do not generally open until after 9 pm.
In Arab countries, men kiss one another on the cheek（脸颊）. Your host may welcome you with a kiss on both cheeks. It is polite for you to do the same.
In Japan, people usually give personal or business cards to each other when they meet for the first time. When a person gives you a card, don’t put it into your pocket right away. The person expects you to read it.
Don’t forget to be careful of your body language to express something in a conversation. A kind of body language that is used in one culture may be impolite in another.
| A．Love me, love my dog. |
| B．He who laughs last laughs best. |
| C．When in Rome, do as the Romans do. |
| D．Where there is a will, there is a way. |
| A．porters | B．waiters |
| C．actors | D．taxi drivers |
| A．搬运工 | B．清洁工 |
| C．接线员 | D．售票员 |
| A．In Spain, people usually have dinner very early. |
| B．In England, it’s not polite to talk about the weather. |
| C．In Arab countries, men kiss one another on the cheek. |
| D．In Japan you should not read the business card as soon as you get it. |
| A．How to tip. |
| B．Body Language. |
| C．When to Have Dinner. |
| D．Advice to International Travellers. |
London used to be “foggy”（有雾的） for the same reason that cities like Beijing or Chongqing are “foggy” today. The “fog” was in fact smog（烟雾）, a mixture of smoke and fog．In other words, it was made by air pollution. In London, some of this pollution came from factories, but much of it came from the coal（煤）that people burnt in their houses to keep warm during the winter. By the 1950s, London’s smog problem had become so bad that the government decided to do something to clean the air. A new law was made and nobody could burn coal in any British city. Within a few years, the air became much cleaner. There were no more “pea-soupers”.
Many Chinese cities now face the same sort of problem with air pollution that London faced 40 or 50 years ago. However, this problem is more difficult for Chinese cities to solve. One reason is that more of the pollution comes from the factories, rather than from coal burnt in people’s houses. If these factories were closed, this would harm the economy and lots of people would lose their jobs. Another reason is that changing from coal to cleaner fuel（燃料）, like gas, is quite expensive.
However, the air in many Chinese cities is becoming cleaner and cleaner, as the government and people pay more and more attention to cutting down pollution. As a result, there are fewer “pea-soupers” in Beijing than there used to be.
A．There was too much smoke in the sky．
B．There were too many factories in the city．
C．People burnt too much coal in the houses．
A．There was not so much fog in the winter later．
B．A law was made to keep people from burning coal in their houses．
C．Many factories in the city were closed．
A．Smog. B．Smoke. C．Gas.
A．one B．two C．three
A．Using coal is much more expensive than using gas.
B．Factories made much more pollution in China.
C．The reasons of air pollution in London and Beijing are different.
No Car Day was first started by 34 cities in France on September 22, 1998．It was started to protect the environment. By now, more than 1,000 cities around the world have had a No Car Day.
The first No Car Day in China was in Chengdu in 2001．Other cities, including Taipai, Shanghai and Wuhan, also support the day.
In Beijing, more and more people are joining the campaign（运动）. It asks drivers to leave their cars at home for one day each month and walk or ride a bike to work. It also calls on Beijingers not to use cars on June 5 （World Environment Day）. The slogan for the day is, “If we drive for one less day, we can have one more nice day.”
So far, more than 200,000 drivers have shown their support. “We can’t control the weather, but we can choose not to drive,” said Wu Zonghua, a car club chairman. Beijing is trying to have 238 blue sky days this year. In the first quarter of 2012, Beijing only had 52 blue sky days. This was 11 days less than the number for the same period the year before. Much of the dust（灰尘） comes from the desert, but cars cause most of the air pollution. We must do more for No Car Day.
| A．three | B．four | C．five | D．six |
| A．not to work on No Car Day |
| B．to enjoy having a day off |
| C．to leave their cars at home for repair |
| D．to ride a bike or walk instead of driving to work |
| A．52 | B．63 | C．41 | D．238 |
| A．cars | B．dust | C．weather | D．rubbish |
| A．more and more people in Beijing are joining car clubs |
| B．people will have one more World Environment Day each month |
| C．more and more people won’t drive on No Car Day in Beijing |
| D．more people in the world won’t drive any more |
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