Here amid the steel and concrete canyons, green grass grows. A naked cockspur hawthorn tree stands in new soil, and freshly dug plants bend in the wind. But Chicago City Hall here seems an unlikely spot for a garden of any variety. Especially 20,000 square feet of gardens. On it"s roof. As one of a handful of similar projects around the country, the garden is part of a $1.5 million demonstration projected by the city to reduce its "urban heat islands", said William Abolt, the commissioner of the Department of Environment. Heat islands dark surfaces in the city, like rooftops-soak up heat. The retention can bake a building, making it stubborn to cooling. The roof of City Hall, a 90-year-old gray stone landmark on LaSalle Street in the heart of downtown, has been known to reach temperature substantially hotter than the actual temperature on the street below. The garden will provide greenery and shade. "And that," said the city officials, "will save the city dollars on those blistering summer days." The project savings from cooling is about $4,000 a year on a new roof whose life span is about 50 percent longer than that of a traditional roof. The sprawling open-air rooftop garden is being carefully built on a multitiered bed of special soil, polystyrene, egg-carton-shaped cones and "waterproof membrane" mall to keep the roof from leaking, or caving under the normal combined weight of soil, rain and plant life. The design calls for soil depths of 4 inches in 18 inches. When the last plants and seedlings are buried and the last bit of compost laid, the garden will have circular brick steppingstones winding up two hills. "The primary focus of what we want to do was to establish this laboratory on the top of City Hall and get people involved and understanding their impact on the environment and how the little things that we can make an impact on the quality of life", Mr. Abolt said, adding that the plants also help to clear the air. Rooftop gardens, in places where concrete jungles have erased plants and trees, are not new, not even in Chicago. Arms of greenery dangling over terraces or sprouting from rooftops, common in Europe, are becoming more so in the United States as people become increasingly conscious about the environment. Richard M. Daley, who urged the environment department to look into the project after noticing rooftop gardens in Hamburg, Germany a few years ago, has praised the garden as the first of its kind on a public building in the country. It will hold thousands of plants in more than 150 species—wild onion and butterfly weed, sky blue aster and buffalo grass—to provide data on what species adapt best. Small plants requiring shallow soil depths were chiefly selected. What can we learn about the City Hall
A. It was built ninety years ago and is the most outstanding feature in the center of the city.
B. It is originally proper to build a garden on the top of the City Hall.
C. The temperature on its top is a little bit higher than that on the street below.
D. It is the first building in America to have a garden on it.
Here amid the steel and concrete canyons, green grass grows. A naked cockspur hawthorn tree stands in new soil, and freshly dug plants bend in the wind. But Chicago City Hall here seems an unlikely spot for a garden of any variety. Especially 20,000 square feet of gardens. On it"s roof. As one of a handful of similar projects around the country, the garden is part of a $1.5 million demonstration projected by the city to reduce its "urban heat islands", said William Abolt, the commissioner of the Department of Environment. Heat islands dark surfaces in the city, like rooftops-soak up heat. The retention can bake a building, making it stubborn to cooling. The roof of City Hall, a 90-year-old gray stone landmark on LaSalle Street in the heart of downtown, has been known to reach temperature substantially hotter than the actual temperature on the street below. The garden will provide greenery and shade. "And that," said the city officials, "will save the city dollars on those blistering summer days." The project savings from cooling is about $4,000 a year on a new roof whose life span is about 50 percent longer than that of a traditional roof. The sprawling open-air rooftop garden is being carefully built on a multitiered bed of special soil, polystyrene, egg-carton-shaped cones and "waterproof membrane" mall to keep the roof from leaking, or caving under the normal combined weight of soil, rain and plant life. The design calls for soil depths of 4 inches in 18 inches. When the last plants and seedlings are buried and the last bit of compost laid, the garden will have circular brick steppingstones winding up two hills. "The primary focus of what we want to do was to establish this laboratory on the top of City Hall and get people involved and understanding their impact on the environment and how the little things that we can make an impact on the quality of life", Mr. Abolt said, adding that the plants also help to clear the air. Rooftop gardens, in places where concrete jungles have erased plants and trees, are not new, not even in Chicago. Arms of greenery dangling over terraces or sprouting from rooftops, common in Europe, are becoming more so in the United States as people become increasingly conscious about the environment. Richard M. Daley, who urged the environment department to look into the project after noticing rooftop gardens in Hamburg, Germany a few years ago, has praised the garden as the first of its kind on a public building in the country. It will hold thousands of plants in more than 150 species—wild onion and butterfly weed, sky blue aster and buffalo grass—to provide data on what species adapt best. Small plants requiring shallow soil depths were chiefly selected. Why should the rooftop garden be build on the top of City Hall other than on any other buildings
A. Because the City Hall is large.
Because the mayor had urged the environmental department to do so.
C. Because it can make people understand their impact on environment better through a public building.
D. Because the experts just want to make the City Hall a convenient laboratory.
When three Florida boys were diagnosed as having AIDS, their barber refused to cut their hair and their house was burned down by neighbors. These reactions may be (1)_____, but other AIDS sufferers have experienced job loss, (2)_____ of insurance, and even (3)_____ by their families and friends. Social scientists use the term stigma to describe the discredit and shame that public hostility can (4)_____ a group of people. (5)_____, AIDS sufferers are often stigmatized. Where do these stigmatizing attitudes come from AIDS forces us to confront our own (6)_____ in a particularly (7)_____ way, because most of its victims are young. Some people (8)_____ feelings of vulnerability by convincing themselves that AIDS victims are not like them and (9)_____ their fate. They define AIDS (10)_____ something that can happen only to members of certain groups. Because homosexuals are already a target of (11)_____, people"s intolerance becomes (12)_____ to victims of the disease. The stigma of AIDS has created a (13)_____ for people who think they may be (14)_____ risk. Should they (15)_____ themselves tested for HIV—and risk discrimination if their test results are positive (16)_____ should they avoid being tested Many people take the (17)_____ course. Even when HIV testing is required by law, many people (18)_____ great lengths to avoid it. The tragic result is that many people who have the virus do not (19)_____ out about it, do not receive treatment, and remain (20)_____ to spread the virus to others.
A. In total
B. In contrast
C. In short
D. As a result
When three Florida boys were diagnosed as having AIDS, their barber refused to cut their hair and their house was burned down by neighbors. These reactions may be (1)_____, but other AIDS sufferers have experienced job loss, (2)_____ of insurance, and even (3)_____ by their families and friends. Social scientists use the term stigma to describe the discredit and shame that public hostility can (4)_____ a group of people. (5)_____, AIDS sufferers are often stigmatized. Where do these stigmatizing attitudes come from AIDS forces us to confront our own (6)_____ in a particularly (7)_____ way, because most of its victims are young. Some people (8)_____ feelings of vulnerability by convincing themselves that AIDS victims are not like them and (9)_____ their fate. They define AIDS (10)_____ something that can happen only to members of certain groups. Because homosexuals are already a target of (11)_____, people"s intolerance becomes (12)_____ to victims of the disease. The stigma of AIDS has created a (13)_____ for people who think they may be (14)_____ risk. Should they (15)_____ themselves tested for HIV—and risk discrimination if their test results are positive (16)_____ should they avoid being tested Many people take the (17)_____ course. Even when HIV testing is required by law, many people (18)_____ great lengths to avoid it. The tragic result is that many people who have the virus do not (19)_____ out about it, do not receive treatment, and remain (20)_____ to spread the virus to others.
A. preserve
B. conserve
C. deserve
D. reserve