1 According to the passage, which aspect of skyscrapers was some residents of Boston concerned with i
A. The poor reception of radio and TV signals. B. The removal of trees and grass from building sites. C. The harmful effects on the city's plants. D. The obstruction of air traffic.
2According to the passage, what is one disadvantage of skyscrapers that have mirrored walls? ( )
A. The exterior surrounding air is heated. B. The building materials are very expensive. C. Construction time is increased. D. Extra air-conditioning equipment is needed.
3In the late l960s.many people in North America turned their attention to environmental problems,and ne
A. discuss the advantages and disadvantages of skyscrapers B. compare skyscrapers with other modern structures C. describe skyscrapers and their effect on the environment D. illustrate various architectural
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