[单项选择]The part of the environmental movement that draws my firm’s attention is the design of cities, buildings and products. When we designed America’s first so-called“green” office building in New York two decades (67) , we felt very alone. But today, thousands of people come to green building conferences, and the (68) that buildings can be good for people and the environment will be increasingly influential in years to (69)
Back in 1984 we discovered that most manufactured products for decoration weren’t designed for (70) use. The“energy- efficient”sealed commercial buildings constructed after the 1970s energy crisis (71) indoor air quality problems caused by materials such as paint, wall covering and carpet. So for 20 years, we’ve been focusing on these materials (72) to the molecules, looking for ways to make them (73) for people and the planet.
Home builders can now use materials- such as paints that rel
A. developed
B. sketched
C. researched
D. constructed