Read the article and select the best answer. Article: Squirrels often communicate with whistles, chirps and chucks, which sound like the word "chuck". Whistles and chirps are like the sounds that many birds make.Now scientists have translated some of their squirrel-speak. Hare, a professor of zoology at the University of Maniloha in Winnipeg, and his team managed to record squirrels' alarm calls.The researchers studied the sounds and then played them back to 60 wild squirrels, which the scientists approached individually with a video recorder to capture their reponses.Some squirrels lifted their heads up and became.Alert .Creatures that were more frightened simply ran for their lives and dived into caves. "In effect then, whistles that mix with chucks say 'there's an enemy of average threat that's here', and whistles without chucks say 'there's an enemy of seemingly average threat around here somewhere', while pure chirps say, 'I'm hiding here because there's an immediate danger.' " Hare told.Discovery News. Hare and some other researchers believe such sounds arc part of an advanced language that develops just as all other communication systems. Although squirrels risk their lives when they call out to warn others of threats, other squirrels might admire this behaviour, thus increasingly the caller's social status, like humans who look up to heroes. Hare added that other animals, such as birds, probably understand at least some squirrel language, since they also may benefit from the alarm calls. In fact, another Canadian study found that deep-voiced, black-capped chickadees have their own language too.According to certain research, there are a lot of tidings in chickadees' calls, such as directing fellows' activities, keeping in contact between mates, and raising alarms. While chickadees and other birds are often welcomed into gardens by homeowners, squirrels are frequently viewed as pests . Hare wishes a greater understanding of the complex social lives and communication systems of squirrels will provide "hope that humans will gain a greater appreciation and... Question: What can be learned from this text? Options: A: Squirrels communicate with cach other as humans do. B: Some squirrels understand the recorded alarm calls. C: Other animals also well understand the language of squirrels. D: Birds such as chickadees don't have their own language.
B

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Read the article and select the best answer. Article: Linda was kind of late. Linda, 25, had a lot to do at work, plus visitors on the way: her parents were coming in for Thanksgiving from her hometown. But as she hurried down the subway stairs, she started to feel uncomfortably warm. By the time she got to the platform, Linda felt weak and tired -- maybe it hadn't been a good idea to give blood the night before, she thought. She rested herself against a post close to the tracks. Several yards away, Frank, 43, and his girlfriend, Jennifer, found a spot close to where the front of the train would stop. They were deep in discussion about a house they were thinking of buying. But when he heard the scream, followed by someone yelling, "Oh, my God, she fell in!"Frank didn't hesitate. He jumped down to the tracks and ran some 40 feet toward the body lying on the rails. "No ! Not you ! "his girlfriend screamed after him. She was right to be alarmed. By the time Frank reached Linda, he could feel the tracks shaking and see the light coming. The train was about 20 seconds from the station. It was hard to lift her. She was just out. But he managed to raise her the four feet to the platform so that bystanders could hold her by the arms and drag her away from the edge. That was where Linda briefly regained consciousness, felt herself being pulled along the ground, and saw someone else holding her purse. Linda thought she'd been robbed. A woman held her hand and a man gave his shirt to help stop the blood pouring from her head. And she tried to talk but she couldn't, and that was when she realized how much pain she was in. Police and fire officials soon arrived, and Frank told the story to an officer. Jennifer said her boyfriend was calm on their 40minute train ride downtown--just as he had been seconds after the rescue, which made her think about her reaction at the time. "I saw the train coming and I was thinking he was going to die, " she explained. Question: What was the most probable cause for Linda's weakness? Options: A: She had donated blood the night before. B: She felt hot in the subway. C: She had done a lot of work. D: She had run a long way.
(Answer)
A

Question: Read the article and select the best answer. Article: A thief entered the bedroom of the 30th President of the United States, who met him and helped him escape punishment. The event happened in the early morning hours in one of the first days when Calvin Coolidge came into power, late in August, 1923.He and his family were living in the same third-floor suite at the Willard Hotel in Washington that they had occupied several years before.The former President's wife was still living in the White House. Coolidge awoke to see a stranger go through his clothes, remove a wallet and a watch chain. Coolidge spoke, "I wish you wouldn't take that." The thief, gaining his voice, said, "Why?" "I don't mean the watch and chain, only the charm .Take it near the window and read what is impressed on its back, " the President said. The thief read, "Presented to Calvin Coolidge." "Are you President Coolidge ? " he asked. The President answered, "Yes, and the House of Representatives gave me that watch charm.I'm fond of it.It would do you no good.You want money.Let's talk this over." Holding up the wallet, the young man said in a low voice, "I'll take this and leave everything else." Coolidge, knowing there was $80 in it, persuaded the young man to sit down and talk.He told the President he and his college roommate had overspent during their holiday and did not have enough money to pay their hotel bill. Coolidge added up the roommate and two rail tickets back to the college.Then he counted out $32 said it was a loan . He then told the young man, "There is a guard in the corridor." The young man nodded and left through the same window as he had entered. Question: The young man's roommate went back to the college _ . Options: A: by air B: by water C: by bus D: by train
Answer:
D