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Read the following article and select the best answer. Article: If two scientists at Los Alamos National Laboratory are correct, people will still be driving gasoline powered cars 50 years from now, giving out heat-trapping carbon dioxide into the atmosphere--and yet that carbon dioxide will not contribute to global warming. In a proposal by two scientists, vehicle emissions would no longer contribute to global warming. The scientists, F. Jeffrey Martin and William L. Kubic Jr., are proposing a concept, which they have named Green Freedom, for removing carbon dioxide from the air and turning it back into gasoline. The idea is simple. Air would be blown over a liquid solution of potassium carbonate, which would absorb the carbon dioxide. The carbon dioxide would then be put to chemical reactions that would turn it into fuel : gasoline or jet fuel. This process could change carbon dioxide from an unwanted, climate-changing pollutant into a vast resource for renewable fuels. The cycle--equal amounts of carbon dioxide produced and removed--would mean that cars, trucks and airplanes using the synthetic fuels would no longer be contributing to global warming. Although they have not yet built a synthetic fuel factory, or even a small model, the scientists say it is all based on existing technology. "Everything in the concept has been built, is operating or has a close cousin that is operating." Dr. Martin said. The Los Alamos proposal does not go against any laws of physics, and other scientists who have independently suggested similar ideas. Dr. Martin said he and Dr. Kubic had worked out their concept in more detail than former proposals. There is, however, a major fact that explains why no one has built a carbon-dioxide-to-gasoline factory: it requires a great deal of energy. According to their analysis, their concept, which would cost about $5 billion to build, could produce gasoline at an operating cost of $1.40 a gallon and would turn economically practical when the price at the pump hits $4.60 a gallon. Other scientists said the Los Alamos proposal perhaps looked... Question: What is the concept of Green Freedom? - Removing the emission of carbon dioxide. - Reducing the carbon dioxide produced by car driving. - Recycling the carbon dioxide into gasoline. - Reserving the carbon dioxide for global warming.
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Recycling the carbon dioxide into gasoline.

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Read the following article and select the best answer. Article: Enjoy a museum visit with your class! Available Programs: Art Tells a Story: By looking at the subject matter and by drawing from personal experiences, students can find the story in some works of art. ( All grades) Learning to Look: An interactive tour that explores a variety of art using storytelling, movements, music, games, and other techniques helps introduce children to a museum. (Preschool~ Grade 3) Native American Collection: This program explores relationships that exist between art, culture, the geographic location and natural resources. Students will see a bowl made by Maria Martinez, a Towa storyteller, a Northwest coast mask, and Inuit clothing. ( For Grades 2~5) The Language of Art: Classes are welcomed into the museum to take part in an interactive tour of American Art. It gives participants a new set of vocabulary while helping them feel comfortable. Art-on-the-Move: Teachers may borrow suitcases filled with art objects. Free organizations with Education Membership. Planning Your Visit: Booking: Booking is necessary for all tours and programs. Please book at least a week in advance. Teachers are encouraged to organize self-guided visits for their classes during public hours. Tour Hours: Tours can be organized between 9:30 a.m. and 5:00 p.m. on weekdays. Program Fees: Tours are free for those with Education Membership. There is a charge of $6 per student of non-member organizations. Tour with art activities cost $12 per student (non-members) or $10 per student (members). Chaperones :We require one adult chaperone for every 10 children. Chaperones help to make your museum visit a success. A chaperone must pay $5 admission. Lunch: We regret that no lunch facilities are available at the museum. Museum Rules: Don't touch works of art. Don't take photographs. Ask questions. Look, and then LOOK again! Enjoy! Question: Why does the museum feel sorry? - Taking photos is not allowed at the museum. - Visitors can't touch works of art at the museum. - Visitors are not able to have lunch at the museum. - Visitors can't take part in all the activities at a time.
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Visitors are not able to have lunch at the museum.

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Read the following article and select the best answer. Article: Global Positioning Systems are now a part of everyday driving in many countries.These satellitebased systems provide turnbyturn directions to help people get to where they want to go.However,they can also cause a lot of problems,send you to the wrong place or leave you completely lost.Many times,the driver is to blame.Sometimes a GPS error is responsible.Most often,says Barry Brown,it is a combination of the two. Barry Brown is with the Mobile Life Centre in Stockholm,Sweden.He told us about an incident involving a friend who had flown to an airport in the eastern United States.There he borrowed a GPSequipped car to use during his stay.Mr Brown says,"They just plugged in an address and then set off to their destination.And,then it wasn't until they were driving for thirty minutes that they realized they actually put in a destination back on the West Coast where they lived.They actually put their home address in.So again,the GPS is kind of 'garbage in garbage out'." Mr Brown says this is a common human error,but what makes the problem worse has to do with some of the shortcomings,or failures,of GPS equipment.He says,"One problem with a lot of the GPS units is they have a very small screen and they just tell you the next turn.Because they just give you the next turn,sometimes that means that it is not really giving you the overview that you would need to know that it's going to the wrong place." Mr Brown says,"One of the things that struck us,perhaps the most important thing was that you have to know what you're doing when you use a GPS.There are these new skills that people have developed.There are these new competencies that you need to have to be able to use a GPS because they sometimes go wrong.This goes against a common belief that GPS systems are for passive drivers who lack navigational skills." Barry Brown says to make GPS systems better we need a better understanding of how drivers,passengers and GPS systems work together. Question: The example of Barry Brown's friend is used to show that _ . - GPS is nothing but garbage - GPS is still not accurate enough - it is difficult for drivers to use GPS equipment - sometimes drivers are responsible for the problem
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sometimes drivers are responsible for the problem