Article: Residents along Australia's east coast awoke in the morning to an orange sky as winds swept millions of tons of red dust from the country's inland and dumped it on Sydney. Tanya Ferguson,living in Sydney,saw that the room was completely orange.She thought there was a bush fire.But when she went outside,the entire city was covered in a film of orange dust. "It was like being in the outback ,but it was right here in the city,"she said On that day,a big dust storm swept through Sydney.It covered the city in orange dust for about eight hours,making landmarks such as the Sydney Opera House and Harbor Bridge invisible. The storm affected the transportation system.Flights were delayed.Roads were busy as drivers struggled in the difficult conditions.Children and the elderly were told to stay indoors until the dust had cleared.Later strong winds blew it out to the sea and up the coast. No one was hurt in the storm,though health officials answered hundreds of calls from people with breathing difficulties.Emergency services responded to hundreds of calls about tree branches brought down by strong winds. Dust storms are common in the Australian outback,where the land is arid .But the storms rarely reach the coastal regions. Officials said it was the worst dust storm of the past 70 years.Air pollution levels were 15,500 micrograms of pollutants per cubic meter. "On a clear day the pollutants are around 10--20 micrograms per cubic meter,"said Chris Eiser of the NSW department of the environment. Experts said that dry conditions in the outback and strong winds caused the sandstorm. "Ten very dry years over inland southern Australia and very strong winds have combined to produce the storm,"said Nigel Tapper,an environmental scientist at Monash University, Australia. Question: The article is about_. Yes or no, is the answer "the worst dust storm in Australia in the past 70 years"?
No

Article: Years ago, I was watching a detective show on TV where the fingerprints of a criminal are required. The hero invites the bad guy to his home and offers him a glass of water. The man takes the glass and drinks the water. After he leaves the hero dramatically brings out a handkerchief and picks up the glass. His expressions show the satisfaction at a job well done. The bad guy will soon be arrested. At that time, I found it amazing - how can prints on a glass identify people? My dad explained that if you were to press your thumb on an inkpad and then on a sheet of white paper you will leave a smudge or print, which no one else in the world can make. The same would be true for each of your fingers. The Chinese were the first to use a fingerprint as a type of identification - it was used as a signature on important documents, although they had no way of independently matching it with the owner. Each print is one-of-a-kind and no two people have the same characteristic. Scientists and criminologists (those who study criminal characteristics) determine the differences between fingerprints by a careful study of their curves and not by their general shape or pattern. In 1892, an English scientist, Sir Francis Galton, published a book on using fingerprints to solve crimes. At the same time in Argentina, a police researcher Juan Vucetich was also working towards a fingerprint classification system. However, it was in 1896 that Sir Edward Henry, then serving as Inspector General of Police in India, developed the print classification system that would eventually be used globally. Sir Edward Henry and his assistant Khan Haque discovered that all fingerprints could be systematically classified according to their general curve patterns. He divided them into three classes on the basis of their general pattern: loops , whorls , and arches . By counting the curve between any two points in the pattern, each of the ten fingers could be classified into a particular group. Taking the group together as a unit you have a... Question: Fingerprints were first used in China to _ . Yes or no, is the answer "sign documents"?
Yes

Article: Around three forty-five on a rainy Saturday morning, I was woken up by the sound of my pager beeping. As a volunteer firefighter and emergency medical technician, I can never count on a full night of sleep. I pulled myself out of bed and went toward the desk to grab my radio. Our crew was being sent to a nearby home where a man was in cardiac arrest . We found the man lying on the kitchen floor with his wife beside him. We rushed the patient to the hospital, but despite our efforts, we were unable to save his life. In my line of life, I rarely get any recognition from the patients we treat, or from their loved ones. But that night, a man's wife approached us, and through her tears, whispered, "Thank you." Then she hugged each of us. She knew we answered her late-night call for help, even though the ending was not positive. There is something deeply rewarding about helping people in these circumstances. Sometimes, I'm able to make their worst day a bit better: like seeing the tears of an injured child turn into a smile when I gave him an interesting toy; or watching a terrified mother's screams turn into tears of joy when she realized her baby was going to be fine. Experiences like these allow me to see the impact my work has on others. At the same time, I also know the effect _ has had on my own life. As a teenager, I felt awkward when my dad hugged me and said, " I love you, my dear son." I was equally uncomfortable and responded, "I love you." But then I imagined him lying on the kitchen floor that rainy night and realized that my opportunity to say those three words could---at any moment---be taken away forever. Now, I extremely treasure the moment when my father says those three words to me. I've learned to appreciate every relationship I have, to tell people I care about them, and to never take anything in life for granted. Question: The author mentioned the injured child and the terrified mother to show that _ . Yes or no, is the answer "His help could bring people happiness"?
No