Ques: Read the article and select the best answer. Article: Clean your ears, because airport security might soon be scanning them. According to a recent discovery, the shape of ears could provide a reliable new way of identifying people at airports. Researchers discovered that ears of each person have a unique shape and they have created a system that can scan them. The ear scanning technique uses a technology called image ray transform that highlights all the tubular structures of the ear and measures them. Professor Mark Nixon, a computer scientist who led the team from the University of Southampton, believes ear scanning could take place as passengers walk through security gates, for example, by placing cameras on either side to record an image of their ears. Comparing the results against a database of ear shapes, the new system could help airport security workers instantly identify passengers. Nixon and his team tested 252 images of different ears and found the system was able to match each ear to a separate image held in its database with 99 percent accuracy. Besides ear scanning, there have been other systems developed for identity recognition. "With facial recognition, the systems are often confused by crows feet and other signs of ageing," Nixon said. "Your ears, however, age very gracefully. They grow proportionally and your lobe gets a bit larger, but otherwise your ears are fully formed from birth." What's more, facial recognition software is often confused by changes in expression so people need to control their faces and in some cases even avoid wearing make-up. An ear scan system would also offer a less _ alternative toretina scanning, which requires passengers to stare at scanners from a close range. Fingertip detection has long been the most effective way of identifying someone. Nixon expects there to be a combination of different techniques that can be used at the same time to identify a person." Question: The article does not say _ . Options: A: who developed the system B: how the system works C: where the system can be applied D: how long the system took to develop
Ans: D

Ques: Read the article and select the best answer. Article: Old Behrman was a painter who lived on the ground floor of the apartment building. For years, he had always been planning to paint a work of art, but had never yet begun it. He earned a little money by serving as a model to artists who could not pay for a professional model. He was a fierce, little, old man who protected the two young women in the studio apartment above him. Sue found Behrman in his room. In one area was a blank canvas that had been waiting twenty-five years for the first line of paint. Sue told him about Johnsy and how she feared that her friend would float away like a leaf on the old ivy vine climbing hopelessly up the outside block wall. Old Behrman was angered at such an idea. "Are there people in the world with the foolishness to die because leaves drop off a vine? Why do you let that silly business come in her brain?" "She is very sick and weak," said Sue, "and the disease has left her mind full of strange ideas." "This is not any place in which one so good as Miss Johnsy shall lie sick," yelled Behrman. "Some day I will paint a masterpiece, and we shall all go away." Johnsy was sleeping when they went upstairs. Sue pulled the shade down to cover the window. She and Behrman went into the other room. They looked out a window fearfully at the ivy vine. Then they looked at each other without speaking. A cold rain was falling, mixed with snow. The next morning, Sue awoke after an hour's sleep. She found Johnsy with wide-open eyes staring at the covered window. "Pull up the shade; I want to see," she ordered, quietly. Sue obeyed. After the beating rain and fierce wind that blew through the night, there yet stood against the wall one ivy leaf. It was the last one on the vine. It was still dark green at the center. But its edges were color1ed with the yellow. It hung bravely from the branch about seven meters above the ground. "It is the last one," said Johnsy. "I thought it would surely fail during the night. I heard the wind. It will fall today and I shall die at the same time."... Question: One can safely assume after reading the story that _ . Options: A: the relationship between the two girls was based on material comfort B: Behrman was infected with Pneumonia by Johnsy C: Behrman showed great sympathy for the two youth D: Johnsy knew clearly why Behrman painted the ivy leaf for her.
Ans: C

Ques: Read the article and select the best answer. Article: Scientists have found that human eyes are more likely to be damaged by UV rays while skiing in the snow-covered areas than sitting on the beach, according to a report by the UK newspaper The Telegraph. The researchers at Kanazawa Medical University, Japan and American company Johnson conducted the study together. They looked at the effects of light reflection on newly fallen snow on a ski trail (a rough path) in Ishikawa District, northern Japan. They compared the results with the levels of UV rays on a sand beach in southern Japan's Okinawa District. They found that on the beach, eyes are exposed to a daily 260 kilojoules of UV a square meter compared to 658 kilojoules in snow-covered areas. The findings are supported by the Japan Meteorological Agency. According to the agency, the reflection rate of UV light on beaches is often between 10 and 25 percent, compared to 80 percent in the new snow areas. The amount of light increased 4 percent with a 300-meter rise in height. Most of us know that UV rays can harm the skin. That's why we wear sunscreen on our skin before we get out in the sun. But many of us may not realize that UV rays are also harmful to the eyes. If your eyes are exposed to large amounts of UV radiation over a short period of time, you may experience a kind of sunburn of the eye, which is harmful. Your eyes will become red and feel a strange feeling. They may be sensitive to light. Fortunately, this is usually temporary and seldom causes permanent damage to the eyes. Long-term exposure to UV radiation, however, can be more serious. Scientific studies and researches have shown that exposure to small amounts of UV radiation over a period of many years increases the chance of eye damage, which could lead to total blindness. Question: You would most likely find the article in _ . Options: A: a medical magazine B: a travel journal C: a doctor's diary D: a physics textbook
Ans:
A