Researchers have developed new software using smart phones’GPS and imaging abilities that determine the exact location of distant objects as well as monitor the speed and direction of moving objects.The software could eventually allow smart phone-armed soldiers to target the location of their enemies.On the home front,the software could be used by everyone,including golfers judging distance to the green and biologists documenting the location of a rare animal without disturbing it.
“The great advantage of a Smartphone is that it provides so many tools in a single,readily available,relatively inexpensive package,”said Qia Wang,a doctoral student who led the development of the software.“For example,on the battlefield,a soldier needs a rangefinder,compass,GPS and other tools to get information before calling in an air strike.With our software,the soldier can have all those instruments in one device that can be purchased off the shelf.When that soldier returns from War,she can use the same Software to protect her family by clocking a speeder near her children’s school and catching the criminal on video.”
Wang and his colleagues developed their software to locate and track:
Targets of known size—when the size of the target is known.a single image is enough to pinpoint the target’s location.
Targets of unknown size—If the exact size of a target is unknown,the software uses two images to triangulate the location of the target·
Moving targets—By taking a short video of a moving target,the smartphone software can calculate how fast the target is moving and in what direction it is going.
“Currently,our software is limited by the physical abilities of smartphone hardware,but the devices are improving rapidly,”Wang said.“We expect that improvements in GPS accuracy,battery life and camera resolution will allow our software to make even more accurate observations.”.From Paragraph 1 we can know that the new software can_______.
A.determine the speed of moving objects |
B.1ocate objects in the distance exactly |
C.defend soldiers against their enemies |
D.help biologists protect rare animal |
.The example given by Qia Wang is meant to ________________.
A.make an advertisement |
B.describe the software briefly |
C.show the benefits of the software |
D.present the functions of smartphones |
.How does the software calculate the speed of a moving object?
A.By taking a short video. | B.By locating its position. |
C.By taking a single image. | D.By measuring real-life size. |
.What’s Qia Wang’s attitude towards the future of the software?
A.Casual. | B.Optimistic. |
C.Cautious. | D.Flexible |
.What is the best title of the text?
A.Qia Wang,a Talented Doctoral Student |
B.Use Smartphones to Their Full Potential |
C.Targeting and Tracking With Smartphones |
D.Smartphone-armed Soldiers on the Battlefield |
Many teenagers feel that the most important people in their lives are their
friends. They believe that their family members, especially their parents, don’t
know them as well as their friends do. In large families, it is often for brothers and sisters to fight with each other and then they can only turn to their friends for advice.
It is very important for teenagers to have one good friend or many friends. Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone. This communication is very important in children’s growing up, because friends can discuss something difficult to say to their family members.
However, parents often try to choose their children’s friends for them. Some parents may even stop their children from meeting their good friends. The question of “choice” is an interesting one. Have you ever thought of the following questions?
Who choose your friends?
Do you choose your friends or your friends choose you?
Have you got a good friend your parents don’t like? Many teenagers think their____ know them better than their parents do.
A.friends | B.teachers |
C.brothers and sisters | D.classmates |
When teenagers stay alone, the usual way of communication is to___.
A.turn to their friends |
B.talk with their parents |
C.have a discussion with their family |
D.talk with their friends on the phone |
The passage suggests (暗示) that___ .
A.parents cannot choose friends for their children successfully |
B.perhaps some children’s friends are chosen by their parents |
C.children won’t let their parents choose friends for them |
D.parents often try to choose their children’s friends for them |
Which of the following do you think is RIGHT according to the passage?
A.Parents should like everything their children enjoy. |
B.In all families, children can choose everything they like. |
C.Parents should try their best to understand their children better. |
D.Teenagers can only turn to their friends for help. |
What is your favorite English letter? Many of you may say Q. Why? Because
so many of you chat with your friends on QQ. What do you like about QQ? What do you talk about? The CCTV reporter, Miss Wang, interviews three kids. Let’s listen to what they say.
When do you chat on QQ? What do you talk about?
Lin Yuhan, Xi’an: On weekends. We talk about homework and chat with each other.
Tang Xuting, Shanghai: At weekends and when I don’t have much homework. We exchange test answers and chat.
Yang Yuhang, Dalian: Our class goes online together at 4: 00~6: 00pm on weekends. We complain about homework, chat and talk about computer games.
What do you put on your QQ blog(博客)?
Lin: I put good articles I have found online on my blog. I also write articles myself. They are about funny things that have happened in my class.
Tang: I put pictures on my blog. Not my own photos, but pictures from my favorite Japanese cartoons(动画片)like Tennis Prince Conan.
Yang: I put DV films on my blog. I shoot(拍摄)them during sports meetings and school parties. The most popular one is about a dancing teacher, he is so funny that everyone watches it.
How do you like QQ?
Lin: It’s a good space for us to make a record of our lives of both good times and sad times.
Tang: My friends and I may not have time to chat at school. But we can do it on QQ. It’s very helpful to our friendships.
Yang: If you chat with friends on the telephone, your parents sometimes listen to your conversation. There’s no such problem with QQ. You can relax and talk freely. What does Yang Yuhang talk about on QQ on weekends?
①homework ②chat
③test answers ④computer games
A.①② | B.②③ |
C.①②④ | D.②③④ |
What does Lin Yuhan put on her QQ blog?
A.Some pictures. | B.Good articles. |
C.DV films. | D.Japanese cartoons. |
Which one is TRUE according to this article?
A.Lin says QQ is very helpful to their friendships. |
B.Yang says he can chat freely with many friends and relax on QQ. |
C.Tang says QQ is a good space for them to make a record of their lives. |
D.Tang says he chats on QQ on weekends though he has lots of homework. |
On May 23,1989, Stefania Follini came out from a cave at Carlsbad , New Mexico.She hadn’t seen the sun for eighteen and a half weeks .Stefania was in a research program, and the scientists in the program were studying body rhythms (节奏)。In this experiment Stefania had spent 130 days in a cave ,30 feet in depth.
During her time in the cave, Stefania had been completely alone except for two white mice.Her living place had been very comfortable ,but there had been nothing to feel her the time .She’d had no clock or watches , no television or radio.There had been no natural light and the temperature had always been kept at 21℃Stefania stayed in the cave for a long time because___________.
A.she was asked to do research on mice |
B.she wanted to experience loneliness |
C.she was the subject of a study |
D.she needed to record her life |
What is a cause for the change of Stefania’s body clock?
A.Eating fewer hours |
B.Having more hours of sleep |
C.Lacking physical exercise. |
D.Getting no natural light. |
Where does the text probably come from?
A.A novel. | B.A news story. |
C.A pet magazine . | D.A travel guide. |
Welcome to the future. It’s year 2050 and Scotland is now powered completely by“clean”energy.
Homes have entire roofs made of solar materials, rooms are kept warm by wallpaper, and people go to and from work in electric and hydrogen( 氢) cars.
Oil is still being found in the North Sea, but it’s not now only used to keep aircraft flying. And a new 500---mile underwater link with Iceland has been built to catch heat from the hot springs. There’s still a role for king coal—but the black diamonds are now environment---friendly.
People will be able to import the electricity they need and export any excess(超过的量) they make through rooftop windmills(风车). New technology will store electricity better and provide it on demand. Heat exchangers will provide heating and hot water.
Harmful carbon dioxide waste is being piped offshore to St Fergus and from there into some of the remaining oil—producing fields to be stored safely without entering the atmosphere. Gas remains the preferred energy source of industry and is now shipped in liquid form. But hydrogen is imported through pipelines from France and from a geothermal (地热的) plant in Iceland.
Hydrogen—fuelled cars have become popular. Electric bikes are common in cities using the new urban two—wheel network. Electric vehicles have become common, and their performances have been improved because of the developments in electrical drive technology like high—temperature super conducting motors. Many people leave their vehicles in a giant park where they can be recharged from the national electrical system . Oilseed rape (油菜) is widely grown to fuel some motors .What does the underlined phrase in paragraph 2 mean ?
A.The hot springs | B.Oil | C.Coal | D.Oil and coal |
Which sources of energy play a more important role in people’s daily life in the future ?
A.Oil and coal |
B.Hydrogen and gas |
C.Electricity and gas |
D.Solar energy and wind |
The means of transport people use in 2050 do not include__________.
A.windmills | B.electric bikes |
C.hydrogen—fuelled cars | D.aircraft |
The passage is written to tell us in the future_____________.
A.life will be better and better |
B.the energy will become cleaner and cleaner |
C.people will use some new sources of energy |
D.people will pay more attention to the environment |
Recently, a study was carried out to determine who was the greatest American president.Sixty-five presidential historians took part in it, and they judged the past forty-two American leaders based on ten leadership qualities, including public persuasiveness(信服), crisis leadership, management of the economy, moral leadership, and conduct of international relations.The historians also looked at administrative ability (管理能力), relations with Congress, ability to set goals, and the pursuit of equal justice for all.Finally, the experts took into consideration the historical period in which the president lived.
The historians chose Abraham Lincoln as American’s greatest president.He had also been named best president in a similar study in 2000.Abraham Lincoln was the president who led the nation through the Civil War in the 1860s, and was able to unite it in the end.He also took the first steps to abolish slavery in America.
Edna Medford, a professor of history at Howard University in Washington, D.C., was an adviser on this study and the earlier one.She says Abraham Lincoln is seen to represent the values the nation most honors, such as truthfulness, moderation, and respect for human rights.
The historians put American’s first president, George Washington, second on the list, while Franklin D.Roosevelt, Theodore Roosevelt, and Harry Truman follow in that order.John F.Kennedy, the country’s first Roman Catholic president, is sixth on the list.Like Lincoln, Kennedy was murdered while in office.
Among recent presidents, Ronald Reagan was named the tenth best and Bill Clinton rated fifteenth, while the historians put former president George W.Bush at number thirty-six.His father, George H.W.Bush, did much better, being placed at number eighteen.We learn from the text that ___________.
A.this is the second time that Abraham Lincoln has been chosen as America’s greatest president |
B.Edna Medford didn’t take part in the study conducted in 2000. |
C.George H.W.Bush was thought to have done worse in office than George W.Bush |
D.Harry Truman was rated the fourth-best president by the study |
Which of the following belong to the ten leadership qualities considered?
a.Being able to persuade the public
b.Taking effective measures during a financial crisis.
c.Balancing home life and career.
d.Pursuing equal justice for all.
A.a,b,c | B.b,c,d | C.a,b,d | D.a,c,d |
Who is rated worst among the following four presidents?
A.John F.Kennedy | B.George Washington |
C.Bill Clinton | D.George W.Bush |
The text is mainly about ________.
A.the ten qualities a great president needs |
B.a study of American presidents |
C.the values the American nation honors most |
D.how Abraham Lincoln improved the country |