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Read the following article and select the best answer. Article: Smart home applications can share all kinds of helpful information with homeowners. There appears a new housing platform which can detect the stress on electricity -- and the stress on the heart. "There is a growing population of elderly people, and there are statistics to show that more and more of them are going to live alone in the home," said Johann Siau, a senior lecturer at the University of Hertfordshire in the U.K., who was leading the InterHome project. The system was originally designed to provide remote access to a house so owners could be more energy-efficient. In a small type of the system, set-in controller devices connect securely to the Internet. The owner can then monitor them with a cell phone or computer. User feedback helps the system adapt to routines, saving on electricity. While thinking about responding to user behavior and an increasingly elderly population, the researchers decided to add wristband technology that senses important organs of the body such as body temperature and pulse, Siau said. "If someone were to fall, it would detect the fall and it would immediately start the monitor of the pulse to see if the person has gone into shock ," he said. The wristband communicates with the home system wirelessly. Data from the band can be securely transmitted to the home network and accessed by authorized users. "We're working on trying to reduce it to a level where it could potentially be a wrist-sized product," Siau said. But he warned that the technology presented new challenges. "When you start using that on a larger scale, you have issues of privacy or security," he said. Siau said the InterHome home system isn't intended to invade privacy. "We're thinking about the elderly people who are living alone with no one looking after them," he said. "Hopefully this will be able to decrease some concerns and possibly save a few lives." Question: The wristband technology is used in the system to _ . - sense important organs of a person - keep an old man from falling - get the medical information of a sick person - record a person's daily activities
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sense important organs of a person

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Read the following article and select the best answer. Article: For many men, the idea that they have a better sense of direction than women has been improved by a scientific study. Researchers from Norway scanned on the brains of volunteers as they completed navigation tasks to discover men are more skillful at finding their way because they use a separate part of their brain. According to lead researcher Dr. Cal Pintzka from the Norwegian University of Science and Technology (NTNU), men and women have different navigational strategies. Med use basic directions--the use of north, south, east and west--during navigation to a greater degree. Men's sense of direction was more effective. They quite simply got to their destination faster. "If they're going to the Students Society building in Trodheim, for example, men usually go into the general direction where it is located." Dr. Pintzka explained. Women usually orient themselves along a route to get there, for example, go past the hairdresser and then up the street and turn right after the shore. The study shows that using the basic directions is more efficient because it is a more flexible strategy. The destination can be reached faster because the strategy depends less on where you start. Meanwhile, the study also shows both men and women use large areas of the brain when they navigate, but some areas were different. The man used the hippocampus more, whereas women use their frontal areas to a greater extent. That degrees with the fact that the hippocampus is necessary to make use of basic directions. Losing one's sense of direction is one of the first symptoms in Alzheimer's disease. Understanding how men and women use different brain areas and strategies to navigate, researchers will be able to enhance the understand of the disease's development, and develop coping strategies for those already affected. Question: How are men different from women in navigation? - They use a separate part of their brain. - They deal with navigation in complex ways. - They make different actions to the road signs. - They form different images of road conditions.
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They use a separate part of their brain.

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Read the following article and select the best answer. Article: If you ask someone why he or she wears clothes, the answer will probably be "to keep warm and to cover my body". These are the basic reasons why clothes are worn, but people also want to look attractive and appear successful to others. If people only wore clothes for warmth and to cover their bodies, most clothes would be simple and cheap. In most Western countries, however, clothes are sometimes very expensive. The main reason for this is not the cost of the cloth or the cost of making the clothes. The clothes are expensive because of fashion . Successful businessmen, for example, often wear very expensive suits, shirts and ties. Sometimes they pay thousands of dollars for a suit and hundreds of dollars for a tie. It's just a suit and a tie but they pay these prices because of the famous name of the designer. A suit costing much less would be just as warm and would cover the wearer's body just as well. Fashion is always changing, which means those who want to be fashionable have to buy new clothes every few months, even if last month's clothes have only been worn once or twice. Some people have wardrobes full of clothes that have hardly been worn but are no longer in fashion. Being fashionable, therefore, can be a very expensive pastime ! Question: We can learn from the passage that _ . - expensive clothes are not worth their prices - fashion is not always changing - expensive clothes are warmer - fashion designers like expensive clothes
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expensive clothes are not worth their prices