Passage Three
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According to the best historical and archaeological evidence, it is estimated that it took about 800 thousand to 1 million years for the earth's population to reach the 250 total which existed at the end of the first century 'after Christ. For some time after that, disease, famine, and war kept the population increase down to a fraction of 1 percent a year so that more than 15 centuries passed before the population reached 500 million. But in the next 250 years, up to 1850, the population of the world shot up to the 1 billion mark, and today it has reached 3 billion. It is predicted by United Nations investigators that in the next 35 years the population of the world will double. When experts are asked what the most effective measure which overpopulation poses, they reply that at least three measur A. estimates based on current population growth B. references in literature and mythology C. estimates based on previous population growth D. written records and cultural remains [单项选择]According to the man, bananas ______.
According to the man, bananas ______. A．have only recently been cultivated B．are economical to grow C．are hard to grow in plantations in England D．can only be planted in tropical climate A. have only recently been cultivated B. are economical to grow C. are hard to grow in plantations in England D. can only be planted in tropical climate [单项选择] Sustainable Communities
According to the World Wildlife Fund, people are currently using resources 25 percent faster than they can be replaced. If we continue down this course, we will need a second planet by the year 2050. Sustainable communities attempt to change that course by drastically altering how citizens interact with the environment. Alternatively known as green communities or ecovillages (生态村), sustainable communities vary in their approaches to sustainable living, or a way of life that meets the population’s basic needs in ways that can be continued indefinitely for future generations. Some communities focus solely on enriching the environment, while others also aim to improve social and economic conditions as well. Characteristics of Sustainable Living Communities Sustainable communities generally strive to minimize waste, reduce consumption and preserve open space. Ideally, they don’t use r A. use telecommuting methods to contact friends B. cook at home instead of outside to avoid air pollution C. integrate the function of working and living for their home D. forbid driving within the sustainable communities 我来回答: 提交
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