Electrical devices(仪器)could soon use power made by human energy. Scientists say they have developed an experimental device that produces electricity from the physical movement of a person walking. British scientist Max Donelan and other scientists in Canada and the United States developed the device.
The device connects to a person’s knee. As the person walks, the device captures energy each time the person slows down. To do this, the device helps with the slowing down movement of the leg. The movements of the walking person push parts of a small machine
that produces electricity. Using the device, an adult walking quickly could produce thirteen watts of electricity in just a minute. Donelan says walking at that speed could produce enough power to operate a laptop computer for six minutes.
There are several possible uses for the device. Developers say it could help people who work in areas without electricity to operate small computers. The device could also be used in hospitals to operate heart pacemakers(起搏器). It could even be used to assist in the movement of robotic arms and legs.
The experimental version of the device weighs about one and a half kilograms, but it is too costly for most people to buy. But the researchers hope to make a lighter, less costly version. An improved version shou1d be ready in one year.
The developers hope the device will one day help developing countries. Near1y twenty five
percent of people around the world live without electric power.
A similar product was invented in 2005 by Larry Rome of the University of Pennsylvania. He created a bag carried on a person’s back that also produces power from wa1king.The knee device does not produce as much electricity as the bag. But the bag requires the walker to carry a load of twenty to thirty kilograms. The second paragraph mainly talks about .
| A．who developed the device |
| B．how the device works |
| C．several possible uses for the devices |
| D．how much electricity the device can produce |
Compared with the device designed by Larry Rome, this new device .
| A．produces power without adding more loads to the walker |
| B．can produce more power in a much shorter time |
| C．needs to be equipped with a battery |
| D．can help the walker wa1k faster |
From the passage, we can learn that the electrical device can .
| A．help housewives operate the washing machine |
| B．make it much easier for us to go online |
| C．produce more electricity than that invented by Larry Rome |
| D．be applied in medicine to operate heart pacemakers |
Astronauts aboard the space station celebrated a space first on Wednesday by drinking water that had been recycled from their urine(尿), sweat and water got from air. They said “cheers,” clicked drinking bags and toasted NASA workers on the ground.
The urine recycling system is needed for astronaut stations on the moon and Mars. It also will save NASA money because it won’t have to ship up as much water to the station by space shuttles or rockets. Besides, it’s important as the space station is about to expand from three people living on board to six.
The recycling system had been brought up to the space station last November by space shuttle Endeavour, but it couldn’t be used until samples(样品) were tested back on earth. So when it came time to actually drink up, NASA made a big deal of it. The three-man crew stood holding their drinks and thankedengineers in two NASA centers that worked on the system.
“This is something that had been the stuff of science fiction,” American astronaut Michael Barratt said before taking a small mouthful. “The taste is worth trying.”
The new sy
stem takes the combined urine of the crew from the toilet, moves it to a big tank, where the water is boiled off, and the steam is collected. The rest of the urine is thrown away. Then the water steam is mixed with water from air, and then it goes through filters (过滤器). When six crew members are aboard it can make about 18 liters from urine in about 6 hours.
“Some people may find the idea of drinking recycled urine distasteful, but it is also done on earth, but with a lot longer time between urine and the tap,” said Marybeth Edeen, the space station’s national lab manager.
The technology NASA developed for this system has already been used for quick water purification after the 2004 Asian tsunami. According to the text, the recycling system is important because __________.
| A．it makes traveling to the moon for the average person possible |
| B．it can help meet the need for more water after the crew is expanded |
| C．with it NASA won’t need to ship any water up the space station |
| D．it protects the environment in space by reducing the amount of waste |
From Paragraph 5 we can know __________.
| A．the processof recycling urine |
| B．the effect of the recycling system |
| C．the theory behind the recycling system |
| D．an opinion on recycling urine |
What did Edeen say about recycled urine and the recycling system?
| A．The taste of recycled urine is not as good as that of common water. |
| B．The recycling system has made a science fiction story come true. |
| C．The idea of drinking recycled urine makes astronauts feel unpleasant. |
| D．It takes a longer time on earth to make water from urine than in space. |
What is the best title for the passage?
| A．The Research of NASA Has Made Great Progress |
| B．New Technology Is Used in the Space Station |
| C．Drink up: Space Station Recycles Urine to Water |
D．Good News:Water Recycled from Urine Tastes Good |
When it comes to protecting the privacy of their children, U.S. parents give social networks a failing grade. According to a recent survey, three out of four parents believe social networks are not doing a good job of protecting kids’ online privacy.
The survey was conducted for Common Sense Media, a nonprofit organization devoted to helping families find the right way to deal withthe world of media and technology.
Ninety-two percent of parents said they are concerned that children share too much information online, and 85 percent said they are more concerned about online privacy than they were five years ago. In other findings, Common Sense Media found that 68% of parents are not at all confident in search engines keeping their private information safe and secure and 71% of parents said the same about social networking sites.
The survey found a great deal of concern about the online geo-location 
services which find and show the exact position of somebody through the net. Ninety-one percent of parents said search engines and social networking sites should not be able to share the physical location of children with other companies unless the parents approve.
“The survey results present a clear divide between the industry’s view of privacy and the opinion of parents and kids,” Common Sense Media CEO and founder James Steyer said.
“American families are deeply worried about how their personal information is being used by technology and online companies, yet the companies appear to be keeping their heads deep in the sand,” Steyer said.
IT companies need to step up but parents, children, schools and government also need to do more, he said.
“Parents and kids have to educate themselves about how to protect their information,” he said. “Schools should teach all students and their parents about privacy protection.”
“And finally, policymakers have to update privacy policies for the 21st century,” he said. According to the survey, more than 60 percent of parents want the US Congress to update online privacy laws for children and teenagers. What does the underlined part in Paragraph 6 mean?
| A．Refusing to admit the problem. | B．Refusing to work with others. |
| C．Trying to find a solution to the problem | D．Trying to look deep into the problem. |
According to James Steyer, the following organizations should make more contributions to protecting
children’s online privacy except __________.
| A．IT companies | B．Government | C．Schools | D．Nonprofit Organizations |
What can be inferred from the passage?
| A．Parents are worried about social networks because they lead to the children’s failing grades. |
| B．Most US parents agree that the online geo-location services should be forbidden. |
| C．Most USparents will support a law that limits IT companies to using personal information. |
| D．US Congress has not yet passed any online privacy law for children and teenagers. |
Which of the following may be the best title for the passage?
| A．US Congress to Update Privacy Policies for 21st Century |
| B．Common Sense Media Warns Against Social Networks |
| C．US Parents Want Better Online Privacy Protection for Kids |
| D．Worry Grows for Problems Caused by Social Networks |
This is an open letter to the three people who stole my handbagfrom the department store I am employed as a shop assistant.
When you took my bag, I don’t know what you thought you were going to get. With my wages, there’s not much left on a Tuesday. I hope the ￡5 was useful to you. I have informed the social security office so you won’t be able to cash the child benefit next week. I hope that won’t leave you too short．But if you really need a couple of pounds, I suppose you could always cash one of the two checks left in my check book．Of course, I phoned the bank right away and the check-cashing card is no longer valid(有效的), so it won’t be much use to you.
Actually I don’t mind about the money too much. We single parents who work to support our families understand only too well what it means to be short of cash. However, I don’t suppose it went very far among the three of you. Sorry about that!
I wish you had left the bag behind and just taken the wallet and check book．There were all kinds of papers in it, and notes and things that I really need. I really think that was very inconsiderate of you . I mean, how would you like something like that to happen to you?
Well, perhaps the bag will turn up. It wasn’t even an expensive one, just a plain, old brown leather handbag. You probably dumped it in the nearest rubbish bin or threw it into the bushes. We’ve looked around, of course, but no one saw which way you went after you left the shop.
I’m not really angry with you．I know how the pressures of modern living can affect us, but I am sad at the loss of my personal things. I feel offended and helpless. The police were very icy, and they just shrugged（耸） their shoulders. “It happens all the time,” they told me. Some small comfort, I suppose. But I’ve lost just a little more faith in human nature. And as my young son said when I told him what had happened, “Why? Mummy, why us?” I couldn’t answer that question. I wonder if you can.In writing Paragraph 2, the writer wants to __________.
| A．describe the contents of the bag in detail | B．give some suggestions to the three thieves |
| C．tell the thieves they could hardly get any money | D．state the fact that she was careless with the money |
Which of the following is the most valuable to the writer?
| A．The cash in her bag. | B．The papers and notes in the bag. |
| C．The handbag itself. | D．The check books in the bag. |
What can we conclude about the police?
| A．They have doubts about human nature. | B．They show sympathy for the woman. |
| C．They think the case quite common. | D．They are unable to find the thieves. |
Why does the author write the letter?
A．To give the th ieves a serious warning. |
B．To complain about the fall ofhuman goodness. |
| C．To call people’s attention to their belongings. | D．To express her affection for her valuable bag. |
Below is a web page from http://www.parents.com/.
Kid of the Year Photo Competition
Enter your kid’s photo today and win! We’re giving away 52 weekly $250 prizes from Readers’ Choice votes. PLUS our editors will select one entry to win our grand prize of $7,000.
Official Competition Rules
No purchase necessary to enter or win.
The Kid of the Year Photo Competition entry period begins at 12:00 a.m.
January 23, 2011, and ends January 21, 2012 (“Entry Period”). Entries must arrive by 9:00 p.m.
on January 21, 2012 (“Entry Deadline”). Entries will not be acknowledged or returned.
SPONSOR(赞助商): Meredith Corporation, 1716 Locust Street, Des Moines, Iowa.
ENTRY: There will be two methods of entry.
Share My Entry:
Visit http://www.parents.com/photos/photo-contests-1/kid-of-the-year/ and click the button to enter.
Facebook Entry:
Visit http://Facebook.com/ParentsMagazine and click the Kid of 2011 tab(选项卡).
Then complete the registration form and follow the instructions to upload one album of up to six photos
of your child aged three months to eight years. You may provide one description and one album title that will
be applied to all photos. Photos, without any brand names or trademarks, must be taken by participants,
non-professional, unpublished and may not have won any prize or award. Photos must be .jpeg or .bmp image
formats (格式) and cannot be over 3 MB
This promotion is in no way sponsored, supported or run by, or associated with Facebook. You are
providing your information to Parents Magazine and not to Facebook. The information you provide will
only be used to run the promotion and register for Parents.com.
LIMIT: One entry per family, per child, per week. One weekly prize per child. For entries of more
than one child in a family, the entry process must be completed separately for each child. No group entries.We can learn from the passage that _________.
|
Linda, a mother with seven-year-old twins, wants to enter the competition. She must _________.
|
To enter the competition, photos must __________.
|
The purpose of the passage is __________.
|
Chilean rescued miner Edison Pena ran the New York City Marathon on November 7th , less than a month after he was rescued from a collapsed (坍塌的) mine that trapped him and the other 32 miners for 69 days. Pena ran 10 km daily through the mine’s tunnels (巷道) to beat the anxiety, wearing cut-down boots until rescuers sent him a pair of sports shoes through a narrow hole that served as the miners’ “lifeline” to the surface.
“When I ran in the darkness, I was running for life,” Pena told a news conference in New York. “I was running to show that I wasn’t just waiting around. I also wanted God to see that I really wanted to live.” The miners were discovered alive on August 22---17 days after the mine collapsed, but it took many more days for rescuers to dig a hole big enough to bring them out.
The New York Road Runners, which organizes the marathon, had invited Edison Pena to the event after hearing his story. They thought he could ride in the lead vehicle or hold the finish line tape, but Pena said last week he did not want to watch, he wanted to run. “I was very eager to take on this big challenge,” he said. “I wanted to show the world I could run.” He hoped to run the 26.2-mile race in about six hours. “I have a knee injury, but I am eager to cross the finish line,” he said. 
An Elvis Presley fan who asked rescuers to send the singer’s music down into the mine, Pena broke into song at the news conference with the Presley hit Return to Sender.
On the morni
ng of November 7th, Pena, known as “the runner” by fellow miners trapped with him
, set out to cover the course along with thousands of other runners and completed the race in five hours and 40 minutes.When trapped underground, Pena ran a long way every day to _______.
| A．find a way to get out | B．dig a lifeline to the ground |
| C．keep himself from coldness | D．get rid of his uneasy feelings |
According to the passage, Pena _______.
| A．was not expected to run the marathon at first |
| B．failed to achieve the goal he had set for the marathon |
| C．wore sports shoes while working underground |
| D．was asked to sing a Presley’s song at a news conference |
During the rescue of the Chilean trapped miners, the digging of the escape hole lasted about
_________.
| A．17 days | B．22 days | C．52 days | D．69 days |
Pena can be best described as _________.
| A．smart-minded | B．strong-willed | C．hard-working | D．warm-hearted |
nd an album title for the kid’s photos