单项选择题A．To tell what high tech and state of the art are.B．To tell how high tech and state of the art have developed.C．To give examples of high tech.D．To describe the modern technology.

单项选择题A．Eliminating the original vegetation from the building site.B．Making the houses in an area similar to one another.C．Deciding where a house will be built.D．Surrounding a building with wildflowers and plants.