Read the article and select the best answer. Article: According to the US government, wind farms off the Pacific coast could produce 900 gigawatts of electricity every year.Unfortunately, the water there is far too deep for even the tallest windmills to touch bottom.An experiment under way off the coast of Norway, however, could help put them anywhere. The project, called Hywind, is the world's first large-scale deepwater wind turbine .Although it uses a fairly standard 152-ton, 2.3-megawatt turbine, Hywind represents totally new technology.The turbine will be fixed 213 feet above the water on a floating spar, a technology Hywind's creator, the Norwegian company StatoilHydro, has developed recently.The steel spar, which is filled with stones and goes 328 feet below the sea surface, will be tied to the ocean floor by three cables ; these will keep the spar stable and prevent the turbine from moving up and down in the waves.Hywind's stability in the cold and rough sea would prove that even the deepest corners of the ocean are suitable for wind power.If all goes according to the plan, the turbine will start producing electricity six miles off the coast of southwestern Norway as early as September. To produce electricity on a large scale, a commercial wind farm will have to use bigger turbines than Hywind does, but it's difficult enough to balance such a large turbine so high on a floating spar in the middle of the ocean.To make that turbine heavier, the whole spar's center of gravity must be moved much closer to the ocean's surface.To do that, the company plans to design a new kind of wind turbine, one whose gearbox sits at sea level rather than behind the blades. Hywind is a test run, but the benefits for perfecting floating wind-farm technology could be extremely large.Out at sea, the wind is often stronger and steadier than close to shore, where all existing offshore windmills are planted.Deep-sea farms are invisible from land, which helps overcome the windmill-as-eyesore objection.If the technology catches on, it will open up vast areas of the planet's... Question: The Hywind project uses totally new technology to ensure the stability of _ . Options: A: the cables which tie the spar to the ocean floor B: the spar which is floating in deep-sea water C: the blades driven by strong and steady sea wind D: the stones filled in the spar below the sea surface
B

Read the article and select the best answer. Article: Monitoring the mood of a pet dog could be used as an early warning sign that an elderly owner is struggling to cope, a new report has claimed. Researchers placed movement sensors on dogs to track their behaviour and identified 17 distinct activities, including chewing, barking, sitting and digging. This allowed them to map the normal behaviour of a healthy, happy dog, which means any changes can be monitored and could indicate an issue with their owner. Nils Hammerla, part of the team from Newcastle University, said, "Humans and dogs have lived together in close relationships for thousands of years, which has led to strong emotional and social mutual bonds." "A dog's physical and emotional dependence on their owner means that their well-being is likely to reflect that of their owner. Any changes such as the dog being walked less often, perhaps not being fed regularly, or simply demonstrating "unhappy" behaviour could be an early indicator for families that an older relative needs help. This is the first system of its kind which allows us to remotely monitor a dog's behaviour in its natural setting." The team of academics, who presented their findings at the 2013 UbiComp conference in Zurich, created a hi-tech, waterproof dog collar for the study. Dr Cas Ladha, who led the study, said: "A lot of our research is focused on developing intelligent systems that can help older people to live independently for longer. But developing a system that _ family and carers that an older relative is well without intruding on the individual's privacy is difficult. This is just the first step but the idea behind this research is that it would allow us to support people without the need for cameras." A range of dogs was used for the study, as the team needed to map distinct behaviours that correlated between different breeds. Question: Which of the following is an advantage of the intelligent system mentioned in the text? Options: A: It can indicate that people aren't well. B: It can identify different activities of dogs. C: It monitors an elderly owner without disturbing his privacy. D: It lets people see the dog's behavior clearly.
C

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Read the article and select the best answer. Article: What are the chances of a 100-year-old chocolate candy falling in your treat bag this Halloween? Though Goo Goo Clusters may not be as familiar as Kit Kat or Hershey bars, people of all ages have enjoyed it for an entire century. In 1901, a 19-year-old named Howell Campbell opened a candy store in Nashville, Tennessee. He made all kinds of sweets and hard candies with just two copper kettles and about a dozen employees. Then, in 1912, he made the first candy to combine chocolate with other ingredients such as caramel, marshmallow, nougat, and peanuts. Originally, these clusters were hand-wrapped and sold under the counter at a few local stores with a sign reading,"A nourishing lunch for a nickel." Now, they are known as Goo Goo Clusters. What else makes a Goo Goo so special?"In addition to it being the very first-ever combination confection created, its shape also makes it quite unique,'' says Beth Sachan, Goo Goo Clusters' senior marketing manager."The Goo Goo Cluster is a big, imperfectly round mound of deliciousness!" The 100th anniversary of the Goo Goo Cluster is being celebrated throughout the month of October, the biggest candy-selling month of the year. About 40 restaurants in the Nashville area have created unique desserts inspired by Goo Goo Clusters to serve to their customers. Additionally, a Goo Goo-sponsored race called the "Jog'n Hog" was held in Nashville on October 13. Adults and children ran three miles to the finish line after eating at least one of six Goo Goo Clusters from a bag they were given at the halfway point. A golden Goo Goo was hidden in one of the bags. The winner received a $100 gift certificate to the candy's website, googoo. com. Question: The 100th anniversary of the Goo Goo Cluster is being celebrated by _ . Options: A: offering specially designed desserts B: giving away many gift certificates C: opening a lot of restaurants D: holding a competition of eating candies
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A