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I'm taking a test and have to guess the right answer to the question after the article. Article: Why can some people sleep through noises like a honking car or flushing toilet, while others are awakened by the lightest sound? To find the answer, sleep researchers at Massachusetts General Hospital conducted an unusual study of 12 self-described deep sleepers. After tests confirmed that the healthy volunteers were solid sleepers, they took part in a three-night study in the university's sleep laboratory. The participants spent the night in a big and comfortable room. But the room also included four speakers positioned near the top of the bed. During the night, the deep sleepers were subjected to 14 different recorded sounds, like street traffic, toilets flushing, an ice machine dispensing and an airplane flying overhead. Next door, the researchers monitored their sleep patterns and brain waves. As expected, all of the participants slept ly well, but there were differences in how they responded to the noisy interruptions. Some of the sleepers didn't wake up even when a sound was blasted at 70 decibels ; others were awakened by sounds at 40 or 50 decibels. The researchers discovered that the difference in a sleeper's reaction to noise could be predicted by the level of brain activity called "sleep spindles''. A sleep spindle is a burst of high-frequency brain activity coming from deep inside the brain during sleep. The source of the spindles is the thalamus, a part of the brain that sends sensory information to the rest of the cortex . Before the study, the Massachusetts researchers theorized that the spindles are the brain's way of preventing sensory information from passing through the thalamus and waking the rest of the brain during sleep. They found that the sleepers who experienced the most sleep spindles during the night were also the soundest sleepers and were least likely to be awakened by noise. Scientists already know that most people become lighter sleepers with age, most likely because older people experience less "slow wave sleep'', which is the deepest stage of sleep. People also produce... Question: From the passage we can predict _ . Options: A: more factors in influencing sleep spindles may be discovered B: more solid sleepers will take part in experiments C: sleep spindles will be applied to changing one's behaviors D: deep sleepers will probably enjoy a more healthy life
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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: A ship was damaged during a storm at sea and only two of the men aboard were able to swim to a small island. Not knowing what else to do, the two survivors decided that they should pray to God. However, to find out whose prayers were more powerful, they agreed to divide the land between them and stay on opposite sides of the island. The first thing they prayed for was food. The next morning, the first man saw a tree on his side of the island, and he was able to eat its fruit. But the other man's side of land remained _ After a week, the first man became lonely and decided to pray for a wife. The next day, another ship was damaged and the only survivor was a woman who swam to his side of the island. But on the other side of the island, there was nothing. Soon the first man prayed for a house, clothes and more food. The next day, like magic, all of these things were given to him. However, the second man still had nothing. Finally, the first man prayed for a ship so that he and his wife could leave the island, and in the morning he found a ship stopped at his side of the island. The first man boarded the ship with his wife and decided to leave the second man on the island. As the ship was about to leave, the first man heard a voice from Heaven, "Why are you leaving your partner on the island?" "My blessings are mine alone since I was the one who prayed for them." The first man answered. " His prayers were all unanswered so he doesn't deserve anything." "You are mistaken!" the voice said. "He had only one prayer, which I answered. He prayed that all your prayers would be answered." Question: Why didn't the two men stay together on the island? Options: A: Because they both wanted to live a quiet life B: Because they couldn't get along well with each other C: Because they wanted to test the power of their prayers D: Because they wanted to keep their own life secret from others
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C

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I'm taking a test and have to guess the right answer to the question after the article. Article: The olinguito is new to science. Although lt has been living in the cloud forests of South Amcrica for some time. Scientists say the olinguito is the first new carnivore discovered In the Americas in more than 30 years. It is a hairy orange-brown creature with a sweet face and big eyes The animal has small. rounded ears and lives in the trees An adult weighs one kilogram and measures about 75 centimeters. with half of those centimeters taken up by its ringed tail Most of the time. it likes to eat fruit, although it also eats meat. Active at night, the animal has lived in Colombia and Ecuador for a long time. But the olinguito did not exist in science books before now. Kristofer Helgen, director at the National Museum in Washington, led the research team that confirmed the existence of the olinguito. It had been mistaken more than a century ago for a look-alike animal -- a similar but larger olingo . Mr. Helgen had been studying olingos in a museum for ten years. At that time. he observed a difference in the size and shape of the heads and teeth. That led him on an effort to prove he was looking at an animal never before described by science. He got lucky when he communicated with a zoologist in Ecuador. The animal expert there made a short video that shows an olinguito in the trees. The video confirms that the oiinguito is different from the olingo Mr. Helgen says tens of thousands of olinguitos live in the wild and are not in danger of disappearing forever. Human beings, however, are moving closer to the olinguito habitat in the Andean cloud forests. The research team estimates that 42 percent of historic olinguiio habitat has been removed Question: Comparcd with most carnivores. the olinguito may seem more _ . Options: A: terrble B: fierce C: clever D: lovely
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D