PDF《（在此卷上答题无效） 2018 年安徽省中小学新任教师公开招...》

confidence and self-esteem high, so he convinced them to retake the advanced placement test. This time, the test would be even harder, so Escalante made his students stay even later after school and forced them to practice their equations over and over again, encouraging them to study hard so they could prove to the world that they are capable of accomplishing. The students took the test and the scores arrived-every student passed with flying colors. This was the greatest event in the history of Garfield High School. 31. What did Jaime Escalante do when he was

44 years old? A. He left his hometown for America. B. He took a math course and got a degree. C. He began to teach at an American school. D. He became a teacher on his parents'

advice. 32. Why did Jaime Escalante get that angry? A. His students cheated in the test in Calculus. B. His students weren'

t allowed to take the test. C. None of his students managed to pass the test. D. His students'

test results weren'

t acknowledged. 33. What dose the underlined word with flying colors in paragraph

4 mean? A. Narrowly B. Successfully C. Enthusiastically D. Unsatisfactorily 34. Which of the following best describes Jaime Escalante? A. Strict and brilliant. B. Humorous and kind. C. Arrogant but strong-willed. D. Bad-tempered but devoted. B People often recommend planting trees to make cities greener, cleaner and healthier. But during heat waves, city trees can actually increase air pollution. Indeed, a new study finds, up to

60 percent of the smoggy ozone in a city'

s air on hot days may trace to chemicals emitted by trees. Galina Churkina, who works at Humboldt University of Berlin, and her team confirmed it. The findings might seem the opposite of what you would expect, notes Robert Young, an expert in city planting at the University of Texas at Austin. Indeed, he notes, everything has multiple effects. The new findings do not mean cities should discourage tree planting, he says. Instead, cities may need stricter controls on other sources of pollution, such as tailpipe emissions from cars and trucks. City trees soak up carbon dioxide, and at the same time they release oxygen into the air. But oxygen is far from the only gas that trees and certain other green plants release into the air. One of these chemicals is a hydrocarbon known as isoprene (异戊二烯) . It can react with combustion (氧化) pollutants, such as nitrogen oxides (氧化氮) emitted by cars and trucks in cities. The result is the formation of ozone. A component of smog, ozone can irritate the lungs and aggravate airway diseases. Churkina says her team was not surprised to see the seemingly contrary relationship between plants and pollution. She adds that its importance was, however, quite amazing. The results, Churkina says, suggests that city tree plantings programs should not ignore the role this greenery may play in aggravating summer air pollution. Adding more trees will improve quality of life only if those cities also undertake plans to sharply cut vehicle pollution in summer and to increase their reliance on clean energy sources for electric power, she says. 35. What does the new study find about city trees on hot day? A. City trees can reduce the smoggy ozone. B. City trees may easily absorb heat waves. C. City trees may cause more air pollution. D. More city trees can make a city far better. 36. What is the third paragraph mainly about? A. The harm ozone does to people in cities. B. The way trees help the formation of ozone. C. The chemicals green plants release into the air. D. The benefits trees bring to the city environment. 37. Which of the following is suggested by Churkina? A. Planting more trees in cities. B. Advocating using clean energy. C. Improving people'