Article: Setting off fireworks is usually a pleasure for many teenagers. Even though this is not legal in many areas, some will still find a way to get fireworks and have themselves a little celebration. You may know some teenagers that use fireworks in other manners, such as a try to set fire to buildings. This can result in some serious legal problems. Not only is it not legal to have the fireworks, but the teenagers will also be charged with the damage to buildings. You may think it's all fun, but it's dangerous for others as well as for your future. Setting off fireworks is dangerous especially when you don't know how to set off fireworks. Teenagers that don't know about the proper way to set off fireworks could end up in a lot of trouble. If something goes wrong, bodily harm can happen. It is possible for fireworks not to get off correctly and explode on the ground. If the teenager is too close, he could suffer some serious physical injuries. Teenagers can also cause a lot of harm to others who are in the same area as the fireworks. When teenagers do not know how to correctly deal with lighting fireworks, they will place a lot of people in harm's way. Many teenagers that were present for the fireworks show have been injured by a firework that was lit by another teenager. It is very common for teenagers with fireworks to set fire to nearby things, such as trees and buildings. This is why teenagers should always be supervised by an adult. Though they may seem fun and harmless, fireworks can actually cause a lot of damage if they are not dealt with correctly. It is common for teenagers to get into a lot of trouble for simply having fireworks, even if they are not caught setting them off. In addition to personal safety, the safety of surrounding things should always be considered. Question: Teenagers suffer some serious physical injuries mainly because _ Yes or no, is the answer "they don't know how to set off fireworks"?
No

Article: It is generally believed that we are getting cleaned when we step under a shower. We are, but we're also giving a home to lots of tiny little creatures we didn't even know about. A showerhead carries thousands of bacteria called Mycobacterium.These can cause problems like coughs and tiredness, and a general feeling of poorliness . When you turn on the water, the bacteria go from the showerhead onto and into your body. This is a finding of Norman R. Pace and his team at the University of Colorado, in the US. The scientists investigated bacteria in all kinds of human environment, including showers.Pace's team looked at 45 showerheads in nine American cities. They discovered that 30 percent of them had large amounts of flying Mycobacterium. But Pace said that they _ few threats to the health.Only those with a weak immune system might need to worry.He told the New York Times that the bacteria are not as unpleasant as might be thought.He said that having a shower is no more dangerous than anything else we do in the morning. But for those who feel sick about the idea of all those microorganisms , he had some advice. Let the water run for 30 seconds before getting into the shower. Why? The number of bacteria is smaller than that when the water is just turned on. If that seems like a waste of water, he added that you could also change your showerhead every few months. However, Pace had good news too. He has also been testing the air in US subways. Apart from iron particles , which are ground off the track by the wheels of trains, subway air is fresh. The reason is that a train's movement pumps fresh outdoor air into the tunnels. Pace explained that he wanted to understand the natural microbial environments of public places. This kind of knowledge might help discover the microbes to be used in a bioterrorist attack. Question: What contributes to fresh air in US subways? Yes or no, is the answer "The train's movement."?
No

Q: Article: Perhaps you have seen them on the playground, at preschool drop-off or piano lessons, or even in TV shows like Up All Night. They are the stay-at-home dads, and lately, it seems they're everywhere. The latest research shows that 32 percent of dads regularly care for their children, and among those with preschool-age kids, one in five dads is the primary caregiver. In families where mom works, that figure rises to nearly one in three. Stay-at-home dads have become so common that even toy makers like Mattel are catering to them. A recent study finds that today's full-time fathers aren't trying to be "Mr. Moms". Instead, they're carving out their own unique roles as parents. I spoke with some experienced stay-at-home dads, who agreed that their parenting styles are different. "I do let the kids take more risks on the playground, while my wife tends to get nervous that they'll fall and hurt themselves," says Kyle, 38, an artist. Besides, as there are more and more stay-at-home dads, they are turning to each other for support. They have created Meet Up groups and held Dads Nights Out. Kyle admits he had noticed a change recently. "Several years ago, I was checking out at a store with the kids, and the cashier was very curious why I was buying food instead of my wife. I told her that I was a full-time dad, and she commented, 'Wow, I have never met one of you before.' Now, my next-door neighbor is a dad who works from home and we often trades off watching the kids after school. " As for my own husband, although he admits that being a full-time dad is encouraging, he's also proud of the strong bond with our daughter, which will offer her benefits that last for years. Children wit caring dads tend to have higher intelligence and more confidence, and do better in school. They also are less likely to experience depression or get into trouble, and have better social skills. Question: Children with full-time dads are more likely to be _ . Yes or no, is the answer "smart and positive."?
A: No

Q: Article: JIUQUAN, Gansu Province, Sept. 6(Xinhua) ---- China's manned spacecraft Shenzhou-7 will be launched at an appropriate time between Sept. 25 and 30 from the Jiuquan Satellite Launch Center in northwestern Gansu Province, a spokesman said here on Saturday. The mission will accomplish the first spacewalk by Chinese astronauts. "All the major systems involved in the launching are now in the final preparation. The main tests for the spacecraft, the Long-March II-F rocket, suits for the space walk and a satellite accompanying the fly have also been finished, " said the spokesman. In addition, the ground control system is fully prepared, including the launch site, the landing site, and the communication for observation and control. When Shenzhou-7 enters its orbit, one of the three taikonauts will conduct a space walk, said Zhao Changxi, a senior scientist with the project, earlier. According to Zhao, cameras would be fixed outside and inside of the ship for live broadcasting of the space walk. While the last mission of Shenzhou-6, with a crew of two, was aimed at several days of manned flight, this time the task might be more stringent as one of its main goals is the space walk. Earlier reports said a crew of six astronauts had been chosen for the mission, with three manning the spacecraft and three substitutes. China successfully put two manned spacecrafts into orbit in 2003 and 2005 respectively, becoming the third country to send an astronaut into space after the United States and the former Soviet Union(now Russia). Question: What is the main idea of the passage? Yes or no, is the answer "China is ready for the launching of SHenzhou 7."?
A: Yes