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I'm taking a test and have to guess the right answer to the question after the article. Article: While very young unmanned aircraft industry looks at ways to improve small unmanned aircraft systems (UAS) for specific tasks such facility security, infrastructure inspection, or precision agriculture, a New Mexico-based aerospace founder is thinking bigger and longer-term ones. Titan Aerospace, a one-year-old aircraft designer, last week unveiled its Solara 50 and Solara 60 unmanned aircraft. These are two large solar-powered>> high-altitude vehicles the company plans to send up into space for weeks,months>> and eventually years at a time without ever having to land. Titan doesn't refer to these concept aircraft as "drones " or "unmanned aircraft system," but instead calls them "atmospheric satellites" for their ability to remain in the sky for extended periods of time just as orbital satellites do. The company hopes to provide a platform of less than $2 million that governments, private industry, and research institutions can put high into the atmosphere for extended periods of time for a little part of the cost of a space satellite. The idea is that an atmospheric satellite can conduct most of the same operations as an orbital one: atmospheric observation and weather monitoring, communications relay, oceanographic research, and earth imaging. Other operations are impractical for space satellites, such as border security, maritime traffic monitoring and anti-piracy operations, disaster response, or agricultural observation. And with continuous flight time of up to five years, Solara's aircraft would have endurance on par with (......) many small satellites, making them a more attractive choice for a range of these applications. "If you have to go up to the orbital satellite and rent that service>> that's a lot of money," says Dustin Sanders, Titan's chief electrical engineer. "And launching a satellite, that can cost billions of dollars. We're trying to do a single-million-dollar-per-aircraft platform. And the operation cost is almost nothing--you're paying a little money and make sure the aircraft... Question: We know from the passage that the atmospheric satellite can continue to stay in the sky for _ Options: A: five years B: six years C: seven years D: eight years
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A

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I'm taking a test and have to guess the right answer to the question after the article. Article: Do we really know what dinosaurs looked like? Of course we do. We see them everywhere, not only in museums, but also in movies, magazines, and even in the toys we get from McDonald's. Since the days of early cinema, dinosaurs have captured our imaginations. They are often shown as scaly beasts with sharp horns and crocodile-like bellies . But the big screen dinosaurs are "a leap from what we know", Mark Norell, who studies dinosaurs at the American Museum of Natural History in New York, told Discover magazine. The reality of drawing dinosaurs for movie studios, magazines, or museums is that the artist often only has half of a skeleton to work with. Many existing and newly-discovered dinosaurs do not have a complete skeleton, which makes it difficult to tell what they looked like. And even with a complete skeleton, there is a lot of room for interpretation. "Look at an elephant's trunk and ears," Jason Brougham, a dinosaur sculptor at the American Museum of Natural History, told Discover magazine. "It's impossible to guess those features by only looking at the skeleton." Researchers suggest that the dinosaurs of old could have had trunks like an elephant or even red necks like a turkey. They could have had colorful spots, stripes , and other interesting patterns on their bodies, just like snakes. Yet, with only a few fossilized bones to study, it is impossible to know for sure. Remember the cruel and quick-running velociraptors in the US film Jurassic Park? Now experts believe that they were much smaller than in the movies, about the size of a large chicken, the BBC has reported. Since the 1990s, some well-preserved dinosaur fossils have been found in China's Liaoning province. Thanks to that, we have known for a while that one group of dinosaurs was covered in feathers. And thanks to the recent discovery of a feathered plant-eating species in Russia, many scientists now believe more dinosaurs than we previously thought had feathers, much like a chicken. Also, in 2007, scientists confirmed that... Question: Which of the following statements is TRUE according to the article? Options: A: Dinosaurs used to have red necks and thick feathers. B: Most dinosaurs are much smaller than we previously thought. C: The chicken has been proven to be the closest living relative to the dinosaur. D: Fossils are still our main source of knowledge about dinosaurs.
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D

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I'm taking a test and have to guess the right answer to the question after the article. Article: Australia is the largest island in the world. It is a little smaller than China. It is in the south of the earth. Australia is big, but its population is small. The population of it is nearly as large as that of Shanghai. We cannot believe it is such a big country with so small population! Enough laws have been made to fight against pollution. The cities in Australia have little air or water pollution. The sky is blue and the water is clean. You can clearly see fish swimming in the rivers. Plants grow very well. Last month we visited Perth, the biggest city in Western Australia, and went to a wild flowers. Exhibition In spring every year Perth has the wild flower exhibition. After visting Perth, we spent a day in the countryside. We sat down and had a rest near a path at the foot of the hill. But what we saw made us pick up all our things and run back to the car as quickly as we could--there were about three hundred sheep coming towards us down the path! Australia is famous for its sheep and kangaroos. After a short drive from any town, you will find yourself in the middle of white sheep. Sheep ,sheep, everwhere are sheep. Question: Enough laws have been made to _ . Options: A: increasw the pppulation B: grow more plants C: fight against pollution D: show wild flowers
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C