【文章內(nèi)容簡介】 nk you), I was able to find the cost estimate letter for Ypsilanti Refuse Service. Over the course of the last 6 months, we have had an interlocal agreement with the Ypsilanti Department of Transportation, enabling us to access their aerial photography. Your aerial photography has a resolution（分辨率） of 1 inch, while the Ypsilanti DOT’s is right at 6 inches. While 1 inch resolution wouldn’t hurt, the price is nearly 10 times the price we are being offered by the Ypsilanti DOT. Furthermore, we have never had need of your elevation contours. Therefore, we no longer have need for data from The Image Center. We would like to remain on your mailing list however. We find your list to be the best source of information on uping meetings, trainings and conferences concerning image products. |Sincerely， |Michael Cannon Lead Spatial Analyst 29. What is the main purpose of Dennis Camp’s letter? A. To request a cost estimate for management services. B. To provide information on an uping conference. C. To give instructions on how to read a cost estimate. D. To announce a change in the method for obtaining a cost estimate. 30. What can be inferred about the cost of the image products? A. The prices are held down greatly on purpose. B. The prices are dependent on the number of participants. C. The costs are petitive when pared to the industry average. D. The costs of the products reflect the prices of support hardware. 31. What does Mr Cannon express concerning the instructions? A. He was pleased with how easy it was to access the letter B. He was unconcerned about the instructions of the letter. C. He was frustrated with his inability to access the documents. D. He was satisfied with the amount being requested of his pany. D The neighborhood an adolescent lives in may influence his or her development of obesity, new study findings suggest. Specifically, investigators found that adolescents from closeknit（緊密的） neighborhoods were less likely to be obese. Closeknit neighborhoods exhibited strong collective effectneighbors get along and are willing to help each other, and many adults are role models for adolescents. “There is an obesity trend in thi s country and treatment has focused on diet and exercise with relatively little success,” study author Dr Deborah A. Cohen, a senior natural scientist at the Santa Monica, Californiabased RAND Corporation, said in a pany statement. The current findings imply that it may be necessary to “l(fā)ook at the neighborhood environment as potentially very important in controlling the obesity trend”, she said. “The social environment that a child lives in is very strongly associated with how active they are, what they eat and how much they eat,” she said. Previous studies show that a neighborhood39。s level of collective effect is predictive of crime, premature death, death from cardiovascular（心血管的） disease and other health outes. In a survey of 684 households in 65 Los Angeles County neighborhoods, Cohen and her team investigated whether collective effect may also indirectly affect obesity. The study included 807 adolescents and 3,000 adults. Cohen’s group found that adolescents who lived in close knit neighborhoods were also less likely to be overweight or at risk of being overweight and had a lower body weight index than did their peers in other neighborhoods. The reason for the association is unknown, but Cohen supposed that children in neighborhoods with high collective effect may be more likely to play outside rather than sit inside and watch television. Or, she said, “maybe their neighborhoods look different”, with more parks and fewer fast food restaurants. Based on the findings, “we need to start looking at our e nvironments,” she said, and asked: “Are there places for kids to play? Billboard advertisements for fast foods?” Mentioning the potential for neighborhood groups to create a sports league or get a park for children to play in, she said, “Together people ca n change their environment and make it healthy.” 32. What does the author want to convey in Paragraph 1? A. A person in adolescence is likely to be obese. B. Obesity is dangerous to adolescents’ health. C. People have great concern about adolescents’ obesi ty. D. Closeknit neighborhood may help prevent adolescents’ obesity. 33. The survey done in Los Angeles by Cohen and her partners is to ______. A. show a neighborhood’s levels of collective effect greatly affect its crime rate B. study whether collective effect has indirect effects on obesity C. prove collective effect has greater effects on adults’ obesity than on adolescents’ D. tell people the importance of the levels of collective effect in a neighborhood 34. Which of the following statements agrees with the result of the survey done by Cohen’s group? A. The less premature death happens in a neighborhood, the higher