A blocked airway  can kill someone in three to four minutes, but it can take more than eight minutes for an ambulance to arrive. So a simple procedure such as opening someone's airway can save their life while they're waiting for emergency medical help. This means you're more likely to give first aid to someone you know than a stranger. There are many misconceptions  surrounding first aid. Below are the 'most popular' ones with details of what you should do. You should put butter or cream on a burn. The only thing you should put on a burn is cold water - keep the butter for cooking. Put the affected area under cold running water for at least ten minutes. The best way to treat bleeding is to put the wound under a tap. If you put a bleeding wound under a tap you wash away the body's clotting agents  and make it bleed more. Instead put pressure on the wound with whatever is available to stop or slow down the flow of blood. As soon as possible call 999. Keep pressure on the wound until help arrives. Nosebleeds are best treated by putting the head back. If you put the head back during a nosebleed, all the blood goes down the back of the airway. Instead advise them to tilt  their head forwards and ask the person to pinch  the end of their nose and breathe through their mouth. You need lots of training to do first aid. You don't - what you mostly need is common sense. You can learn enough first aid in a few minutes to save someone's life - whether it's from a book, attending a course or watching videos online. Remember: anyone can save a life The most important point to save a person's life is to ensure   _  . A) his smooth breath B) ambulances' arriving time C) the quiet surroundings D) emergency medical help
A


(Question)
When someone says, "Well, I guess I'll have to go to face the music", it does not mean he is planning to go to a concert. It is something far less pleasant, like being called in by your boss to explain why you did this or that, and why you did not do this or that. Sour(; )music, indeed, but it has to be faced. The phrase "to face the music" is familiar to every American, young and old. It is at least 100 years old. Where did the expression come from? The first information comes from the American writer James Fennimore Cooper. He said in 1851 that the expression was first used by actors while waiting in the wings to go on stage. After they got their cue(,) to go on, they often said, "It's time to go to face the music." And that is exactly what they did--- face the orchestra   which was just below the stage. An actor might be frightened or nervous as he moved on to the stage in front of the audience that might be friendly or perhaps unfriendly especially if he forgot his lines. But he had to go out. So, "to face the music" came to mean having to go through something, no matter how unpleasant the experience might be, because you knew you had no choice. The other explanation comes from the army. Men had to face inspection by their leader. The soldiers worried about how well they looked. Was their equipment clean--shiny enough to pass inspection? Still, the men had to go out, and face the music of the band, as well as the inspection. What else could they do? The phrase 'to face the music" was first used by   _  . A) all the Americans B) the American writer James Fennimore cooper C) some American actors D) the American orchestra
(Answer)
C


Ques: President Barack Obama rode a bicycle at the White House Science Fair on April 22. But it wasn't an ordinary bike. As he pedaled, the President stayed in place, while the energy from his pedaling powered a water filtration   system. He was testing an invention created by a team of 14 students from Northeast High School, in Oakland Park, Florida. Payton Karr, 16, and Kiona Elliot, 18, attended the fair as representatives of the project."We were hoping President Obama would ride the bike, but we didn't actually expect him to," Payton told TFK. " It really meant a lot." Kiona agreed. "It was pretty awesome to see the invention, which was invented by a group of 14 high school students and one teacher, along with the help of community members, got the interest of the leader of our nation," she said. The project was an idea that came about after one of the Northeast students, Kalie Hoke, visited Haiti after the terrible 2010 earthquake and saw how difficult it was to find clean water. The students invented a portable , bicycle-powered emergency water filtration system, which can provide 20-30 people with drinking water in a 15-hour period. The teens hope their invention will one day be used by relief organizations like the Red Cross. " They can take it to places after natural disasters so that water can be clean for the people there," said Payton. Payton and Kiona were among the 100 students from more than 40 states invited to the third annual White House Science Fair, in Washington, D.C., which is also attended by leaders in science and education. President Obama started the event in 2010 to _ students interested in STEM (Science, Technology, Engineering, Maths)."Well, if you're a young person and you produce the best experiment or design, you ought to be recognized for that achievement," Obama said when he first announced the fair. President Obama praised the projects during a speech to attendees after the fair. "The science fair projects of today could become the products and businesses of tomorrow," he said.... The representatives of the bicycle-powered water filtration system  _  . A) were both community members B) graduated from a famous university C) finished the project with the help of their parents D) were surprised that their invention interested Obama
Ans: D


Ques:It's illegal for the police to attach a GPS unit to your car without your permission, as the U.S. Supreme Court settled in 2012.But if the police are in hot pursuit of a bank robber or other escaping criminals that threaten public safety, a GPS tracker is acceptable. But exactly how can the police GPS track a car that is moving fast? The answer to that question comes from StarChase,a new police technology being used by a small but growing number of law enforcement agencies.It allows the police to fire 4.5-inch glue-covered GPS bullet-like projectiles from an air gun fixed in their police cars.If the GPS tracker makes contact with the escaping robber's car, it'll stick no matter how fast the vehicle is going.That way, the police will have a constant read on the car's location and heading.Aside from simply apprehending criminals,it's believed this new technology could help save lives.If the police successfully fire a GPS unit at a speeding criminal,they can pull back from a high-risk chase.Chases can be incredibly dangerous to all involved,including innocent bystanders and other drivers.Once the GPS bullet connects,there's no need for the chase any longer. Now,predictably,a GPS-loaded gun isn't cheap. Police departments need to pay about   $5.000 per vehicle for the technology,and individual GPS bullets cost as much as $250 each.That may sound expensive,but remember:The alternative is often thousands of dollars in property damage,and great human cost in injury and lost life.According to Star Chase,their GPS bullet system has an apprehension rate of 80%without any report of inury or property damage.If you'd like to learn more about the StarChase system,Popular Mechanics has just published a good article about it.There's also plenty more information available at the company's website. From the text we can learn that GPS bullets  _  . A) are useful for the police B) are widely used in America C) can control the rising crime rate D) can replace the police in the future

Ans:
A