托福 考试写作之历年托福 考生优秀范文13
Skyscrapers and Environment
In the late 1960”s， many people in North America turned their attention to environmental problems， and new steel-and-glass skyscrapers were widely criticized. Ecologists pointed out that a cluster of tall buildings in a city often overburdens public transportation and parking lot capacities.
Skyscrapers are
