Q: Read the following article and select the best answer. Article: One morning more than thirty years ago, I entered the Track Kitchen, a restaurant where everyone from the humblest to the most powerful came for breakfast. I noticed am empty chair next to an elderly, unshaven man, who looked somewhat _ . He was wearing a worn-out hat and was alone. I asked if I might join him. He agreed quietly and I sat down to have my breakfast. We cautiously began a conversion and spoke about a wide range of things. We never introduced ourselves. I was concerned that he might have no money and not be able to afford something to eat. So as I rose to go back to the counter and buy a second cup of coffee, I asked, "My I get you something?" "A coffee would be nice." Then I bought him a cup of coffee, we talked more, and he accepted another cup of coffee, Finally, I rose to leave, wished him well, and headed for the exit. At the door I met one of my friends. He asked, "How did you get to know Mr. Galbreath?" "Who?" "The man you were sitting with. He is chairman of the Board of Churchill Downs." I could hardly believe it. I was buying, offering a free breakfast, and feeling pity for one of the world's richest and most powerful men! My few minutes with Mr. Galbreath changed my life. Now I try to treat everyone with respect, no matter who I think they are. Question: How did the author probably feel after he talked with his friend? - Proud. - Pitiful. - Surprised. - Regretful
A: Surprised.

Q: Read the following article and select the best answer. Article: Most of us are used to seasons. Each year, spring follows winter, which follows autumn, which follows summer, which follows spring. And winter is colder than summer. But the earth goes through temperature cycles over much longer periods than those that we experience. Between 65,000 and 35,000 years ago, the planet was much colder than it is now. During that time the temperature also changed a lot, with periods of warming and cooling. Ice melted during the warm periods, which made sea levels rise. Water froze again during the cold periods. A new study from Switzerland, sheds light on where ice sheets melted during the ice age. It now seems that the ice melted at both ends of the earth, rather than just in either northern or southern regions. This surprised the researchers from the University of Bern. Scientists have long assumed that most of the ice that melted was in the Northern hemisphere during the 30,000-year long ice age. That belief was held because the North Pole is surrounded by land, while the South Pole is surrounded by the Antarctic Ocean. It is easier for ice sheets to grow on land. If surrounded by sea the ice can easily just slip into the ocean instead of building up. The researchers used a computer model to look at ways the ice could melt and how it might affect sea levels. They compared these results to evidence of how temperatures and currents actually changed during that time. The model showed that if it was only in the Northern hemisphere that ice melted, there would have been a bigger impact on ocean currents and sea temperatures than what actually happened. Studies suggest that melting just in the Southern hemisphere would have been impossible, too. The only reasonable conclusion, the scientists could make, was that ice melted equally in the North and the South. It is still a mystery as to what caused the temperature changes that caused the ice to melt. Question: The North Pole is surrounded by land, while the South Pole is surrounded by the Antarctic Ocean. So scientists thought that _ . - most of the ice melted in the Northern hemisphere - most of the ice melted in the Southern hemisphere - The North Pole is colder than South Pole - The South Pole is colder than North Pole
A: most of the ice melted in the Northern hemisphere

Q: Read the following article and select the best answer. Article: Exercise may help to safeguard the mind against depression through previously unknown effects on working muscles, according to a new study involving mice. Mental health experts have long been aware that even mild, repeated stress can contribute to the development of depression and other mood disorders in animals and people. Scientists have also known that exercise seems to cushion against depression. But precisely how exercise, a physical activity can reduce someone's risk for depression, a mood state, has been mysterious. So for the new study, researchers at the Karolinska Institute in Stockholm studied the brains and behavior of mice in a complicated and novel fashion. We can't ask mice if they are feeling cheerful or in low spirits. Instead, researchers have pictured certain behaviors that indicate depression in mice. If animals lose weight, stop seeking out a sugar solution when it's available -- because, probably, they no longer experience normal pleasures -- or give up trying to escape from the cold-water zone just freeze in place, they are categorized as depressed. And in the new experiment, after five weeks of frequent but low-level stress, such as being lightly shocked, mice displayed exactly those behaviors. They became depressed. The scientists could then have tested whether exercise blunts the risk of developing depression after stress by having mice run first. But, frankly, from earlier research, they wanted to know how, so they bred pre-exercised mice. A wealth of earlier research by these scientists and others had shown that aerobic exercise, in both mice and people, increases the production within muscles of an enzyme called PGC-1alpha. The Karolinska scientists suspected that this enzyme somehow creates conditions within the body that protect the brain against depression. Then, the scientists exposed the animals, which without exercising, were in high levels of PGC-1alpha to five weeks of mild stress. The mice responded with slight symptoms of worry. But they did not develop depression.... Question: The researchers at the Karolinska Institute in Stockholm conducted the new study hoping to know _ . - if exercise cushions against depression - what can lead to depression in animals and people - if stress can contribute to the development of depression - how exercise contributes to reducing someone's risk for depression
A: how exercise contributes to reducing someone's risk for depression

Q: Read the following article and select the best answer. Article: Body language is a very powerful tool of communication, not only between people but in the animal world as well. In many instances, we produce idioms (,)which are all understandable by borrowing examples from animal communication. For example, we know that a frightened cat will arch its back high in rigid curve . From this starting-point we might hear the expression, "He gets my back up!" meaning "He makes me angry." In the same manner, we know that many animals, if challenged by attackers, will not turn and run away because this will encourage the attacker to attack them more forcefully. Instead, they will move backwards slowly to get out of harm's way, always still facing their attacker.We call this action " _ " and it can be used just as well with humans as with animals. In the case of humans, however, the back-off may not be physical but oral, as in using a kinder tone of voice and gentler words instead of fighting against the attackers. Question: Which of the following is NOT true according to the text? - To learn knowledge, humans must learn from animals. - Both humans and animals have body languages. - Both humans and animals have ways of escaping from danger. - "Backing off " means keeping away from your enemies.
A: To learn knowledge, humans must learn from animals.