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Read the article and select the best answer. Article: Just as some people think that certain numbers are lucky or unlucky, others believe that we can use numbers to understand our personalities, or predict what will happen to us in the future. Numerology is a way of using numbers to describe a person's character, and to make predictions about future life events. Numerologists use the numbers 1-9, 11 and 22 -- also known as the "master" numbers -- to help a person understand his or her personality, life goals, and destiny. Numerologists consider yourLife Path number to be the most significant because this number describes your character. To find this number, add together all the numbers in your date of birth. For example, a person born on April 25, 1985 would add the month (4), to the numbers of the date (2+5), plus the numbers of the birth year (1+9+8+5). In this case the total is 34, so this person's life path number is 7(3+4). Numerologists believe that people with this number are peaceful and affectionate but can also be very reserved. Your Expression numberdescribes your talents and predicts how you should use these to fulfill your destiny in life. Numerologists assign a number between 1 and 9 to each of the letters in your name. These numbers are then added together in the same way as before to find your Expression number. Numerologists can also do calculations to predict when the most challenging periods of your life will be. Numerologists also believe that the day a person is born is important. Each day of the month has a character description. People born on the fourth are said to be responsible, honest, and stubborn. People born on the fifteenth have very strong attachments to family and home. Those who celebrate their birthday on the thirtieth are artistic, creative, and imaginative, and often make good writers. If we calculate the numerical value of our name and birth date, numerologists believe that we can learn more about our personalities. They also believe that we can predict our destinies, how our lives will progress, and what challenges we may... Question: According to the passage, a person born on the fifteenth tends to be _ . Options: A: stubborn B: home-loving C: artistic D: imaginative
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B

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Read the article and select the best answer. Article: Researchers have established that when people are mentally engaged, biochemical changes occur in the brain that allow it to act more effectively in cognitive areas such as attention and memory. This is true regardless of age. People will be alert and receptive if they are faced with information that gets them to think about things they are interested in. And someone with a history of doing more rather than less will go into old age more cognitively sound than someone who has not had an active mind. Many experts are so convinced of the benefits of challenging in the brain that they are putting the theory to work in their own lives. "The idea is not necessarily to learn to memorize large amounts of information," says James Fozard, associate director of the National Institute of Ageing. "Most of us don't need that kind of skill. Such specific training is of less interest than being able to maintain mental alertness." Fozard and others say they challenge their brains with different mental skills, both because they enjoy them and because they are sure that their range of activities will help the way their brains work. Gene Cohen, acting director of the same institute, suggests that people in their old age should engage in mental and physical activities individually as well as in groups. Cohen says that we are frequently advised to keep physically active as we age, but older people need to keep mentally active as well. Those who do are more likely to maintain their intellectual abilities and to be generally happier and better adjusted. "The point is, you need to do both," Cohen says. Intellectual activity actually influences brain-cell health and size. Question: The findings of James and other scientists in their work _ . Options: A: remain a theory to be further proved B: have been challenged by many other experts C: are practiced by the researchers themselves D: have been generally accepted
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C

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Read the article and select the best answer. Article: Around 200 million years ago, the earth was 18 degrees warmer than it is now. That might be a bit hot for humans, but it was just right for the giant dinosaurs that wandered about the earth during the Mesozoic era. A new study found that planteating dinosaurs may have contributed to the warming of the earthby releasing significant amounts of methane . The study, published in science journal Current Biology, focused on sauropods, longnecked herbivores that munched on the top of trees. They were the largest of the dinosaurs; food broke down in their stomachs for long periods of time. The researchers estimate that a sauropoda released 2,675 liters of methane per day--adding up to a large amount of the greenhouse gas being pumped from dinosaur's gut into the atmosphere. Plant eaters naturally release methane as part of their digestive process. The larger the animal, the more methane it produces. Methane, a greenhouse gas, traps heat and remains in the atmosphere for approximately 915 years, which warms the atmosphere. Today, some animals, such as cattle, goats and sheep, produce large amounts of methane as a byproduct to their food digestion. Methane is also released from human--influenced sources such as landfill, agricultural activities, coal mining and other industrial practices--which all contribute to today's climate change, according to the Environmental Protection Agency. The researchers estimate that earth's sauropods would have produced about 520 million tons of methane per year--similar to the total amount of methane produced today by natural and manmade sources. However, the researchers warn that their numbers are estimates based on multiple assumptions about the digestive systems and populations of dinosaurs. The author of the study David Wilkinson says the emission of methane from dinosaurs would have been just one of the causes of warm climate during the Mesozoic era. Other causes include gases produced from volcanoes, swamps, shallow seas and so on. Still,... Question: David Wilkinson seems to believe that _ . Options: A: methane had little effects on the earth B: many other factors contributed to warm climate C: other causes for warm climate were worth considering D: dinosaurs were mainly to blame for global warming
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B