Read the following article and select the best answer. Article: LONDON--Here's a new warning from health experts:Sitting is deadly. Scientists are increasingly warning that sitting for long periods--even if you also exercise regularly--could be bad for your health.And it doesn't matter where the sitting takes place--at the office,at school,in the car or before a computer or TV--just the overall number of hours it occurs.Several studies suggest people who spend most of their days sitting are more likely to be fat,have a heart attack or even die. In an editorial published this week in the British Journal of Sports Medicine,Elin EkblomBak of the Swedish School of Sport and Health Sciences suggested that authorities rethink how they define physical activity to highlight the dangers of sitting. While health officials have issued guidelines recommending minimum amounts of physical activity,they haven't suggested people try to limit how much time they spend in a seated position. "After four hours of sitting,the body starts to send harmful signals,"said EkblomBak.She explained that genes regulating the amount of glucose and fat in the body start to shut down. Even for people who exercise,spending long periods of time sitting at a desk is still harmful.Tim Armstrong,a physical activity expert at the World Health Organization,said people who exercise every day--but still spend a lot of time sitting--might get more benefit if that exercise was spread across the day,rather than in a single bout . Still,in a study published in 2009 that tracked more than 17,000 Canadians for about a dozen years,researchers found people who sat more had a higher death risk,whether or not they exercised. "We don't have enough evidence yet to say how much sitting is bad," said Peter Katzmarzyk of the Pennington Biomedical Research Center in Baton Rouge,who led the Canadian study."But it seems the more you can get up and interrupt this sedentary behavior,the better." Figures from a U.S. survey in 20032004 found Americans spend more than half their time sitting,from working at their desks to sitting in... Question: How does the danger of sitting too much affect the human body? - It results in a higher death risk. - It increases glucose and fat in the body. - It makes a person unable to exercise long enough in a day. - It causes the gene to fail to balance the glucose and fat in the body.
It causes the gene to fail to balance the glucose and fat in the body.

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Read the following article and select the best answer. Article: Angry survivors demanded answers on Sunday after a terrible stampede at "Love Parade 2010", a music festival in Germany, killed 19 people and left hundreds hurt. The German Chancellor Angela Merkel expressed her shock over Saturday's tragedy in the western city of Duisburg. "This was a very sad day," Merkel said. "We must do everything we can to ensure that something like this never happens again." Witnesses said that people pushed into the narrow tunnel, the only entrance to the Love Parade festival, from both sides until it was dangerously overcrowded. The panic began as festival-goers began to lose consciousness as they were crushed against the walls and each other. The dead included eight foreigners, from Australia, Italy, the Netherlands, China, Bosnia and Spain. More than 340 people were injured. After the panic, a lot of emergency vehicles, including helicopters, could be seen parked on the highway leading to helicopters, could be seen parked on the highway leading to the festival site, carrying away the injured people. The festival itself, however, went on. Police were afraid that ending the music altogether could cause further unrest among the crowd. "The event was a real mess," Patrick Guenter, a 22-year-old baker, said. "Although the festival was full, they kept letting people in." he added. "It seems the organizers didn't plan the route. The road was very narrow, and no one knew what was going on." Said Taggart Bowen-Gaddy,20,an American from Philadelphia. Officials said 4,000 police officers and 1,000 security guards provided security for the event, which attracted up to 1.4 million people. The authorities had only given organizers permission for 250,000 people to attend. "I warned one year ago that Duisburg was not a suitable place for the Love Parade. The city is too small and narrow for such events. It is a pity that..." German police union chief Rainer Wendt told the Bild. The chief organizer, Rainer Schaller, said the popular event would never be held again, "out of respect for the victims... Question: How did the German Chancellor Angela Merkel feel about the tragedy? - Very disappointed. - Angry and surprised. - Very puzzled. - Touched.
(Answer)
Angry and surprised.

Question: Read the following article and select the best answer. Article: I was in Houston a few weeks ago,and needed to be back home in Austin by midmorning the next day.Though I usually left in the evening,for some reason last time I had to choose to set off after midnight. I was on my way back to Austin when I realized I left an important file,and knew I had to return to get it.I took the first exit I could,but when I rounded the corner,an 18-wheeler was stopped dead in the exit lane.I swerved to avoid it,and then I realized that there was something wrong with my car.So I pulled into a small parking lot and unsurprisingly found the area deserted at 3:15am.I've lived in urban areas most of my life.I'm fairly street-wise and don't become frightened easily,but I knew I was in a pretty tough neighborhood. There was no one in Houston to pick me up.I immediately locked the doors and picked up my phone to call a tow truck.Soon a young man knocked on my driver's side window and asked if he could help me.Judging from his appearance,he was far from a mad man,but I knew he was far more likely to rob than help me.So I lied to him.After a while,he asked again,but this time I politely refused and told him the tow truck was due any minute.He finally said,"Madam,you need help.A tow truck in Houston will arrive anywhere between 45minutes and approximately never (which I knew was true),and you aren't going anywhere until you change your flat tire." After considering thoroughly,I got out.He looked surprised,but got right to work.He changed the tire,returned the seat to its place and said,"Thank you for letting me help you.You gave me a chance when most people would never open the door to someone like me.Would it be okay if I gave you a hug?"When I recovered,I gave him a giant hug.I left with a new tire and a renewed faith in human nature. Question: What's the matter with the author's car? - It couldn't get started. - Its oil ran out. - It was out of control. - Its tire blew out.
Answer:
Its tire blew out.