【文章內(nèi)容簡介】 the world is constantly changing and humans must adapt My experience at Weyrich Health Center has taught me that refusing to change one39。s views and accept new ones leads to shortterm goals that finally disappear. Communication with others is an important part of life. Volunteering is not just a requirement or a way to improve your resume, it is a time for service and personal growth. Now I enjoy volunteering my time surrounded by seniors who bring history alive for me. By municating with them, I have developed into a more dynamic person. 28. What39。s the author39。s initial（最初的） attitude towards volunteering? A. Positive B. Satisfied. C. Doubtful. D. Unwilling. 29. Why did Colonel Hems worth invite the author to his table? A. He liked the author very much. B. He wanted the author to acpany（防伴） him. C. He wanted to work with the author. D. He planned to teach the author something. 30. What can we infer from the underlined sentence in ? A. The author had desire to municate with the seniors. B. the author wanted to do a chemical experiment with gas. C. The author imagined himself to be part of isolated gas. D. The author would like to be an oxygen molecule. 31. What does the sixth paragraph mainly tell us? A. Other people39。s attitude towards volunteering. B. The importance of municating with others. C. The important meaning of humans adapting to changes. D. The lessons the author has learned from volunteering. D Climate change has been blamed for killer hurricanes, sea level rise, and drought, but a new report suggests the effects of climate change might hit the world39。s coffee supply. Up to 70 percent of the world39。s coffee supply could be threatened over the next 66 years, according to a new study by researchers at England39。s Royal Botanic Gardens. Nearly 100 percent of the world39。s Arabica coffee growing regions could bee unsuitable for the plant by 2080, according to the study. Beans from Arabica coffee plants account for about 70 percent of the world39。s coffee, but the plant also has to be grown under strict weather conditions: they grow well at temperatures between 64 and 70 degrees Celsius, and are highly influenced by frost（霜） or temperatures higher than 73 degrees Celsius. With temperatures estimated to increase by between and 4 degrees Celsius by the end of the century, the fragile plant might bee increasingly expensive and difficult to grow, especially in places such as Ethiopia and Kenya. In that worst case, nearly all of the world39。s native Arabica coffee would die out. Under more conservative（保守的） estimates, about 65 percent of the regions used to grow the coffee would bee unsuitable for it The evidence from coffee farmers and coffee growing regions around the world is that they are already suffering from the influences of increased warming. Some farmers would likely be able to move their operations to other areas or would be able to overe climate change with artificial（人工的） cooling techniques, but wild Arabica is generally considered to be much more suitable for making highquality coffee. If Arabica bees impossible to raise in its native areas, it could do serious damage to the economies of the mainly thirdworld countries in which it grows. Coffee is the world39。s most popular drink and is the second mosttraded product in the world, behind oil. 32. What does the passage mainly talk about? A. Climate change affects people in many ways. B. More and more attention has been paid to climate change. C. The world39。s coffee supply could be threatened by climate change. D. The39。 growing conditions of Arabica coffee have been improved recently. 33. What can be learned from Paragraph 2 and Paragraph 3? A. According to the study, by 2080 nowhere can be suitable for Arabica coffee growing. B. 65 percent of the world39。s coffee gets raw materials from Arabica coffee plants. C. Arabica coffee plants will grow well at temperatures lower than 60 degrees Celsius. D. Coffee farmers are the biggest victims of climate change. 34. In order to solve the problem of Arabica, coffee plants, some farmers . A. would make efforts to produce highquality coffee. B. would bring in artificial cooling techniques. C. would tend to move to some warm places. D. would grow more wild Arabica. 35. What is the result if Arabica coffee has l