听力原文：The evolution of technology is showing no signs of maturing whatsoever. If you lo

ok at nanomaterials or photonics, carbon nanotubes, all the things that are going on in new types of energy, environmentally better materials—there's no shortage of new technology coming. It is nowhere near maturity. Certainly, there's consolidation among business rood- els and competitors, but it doesn't have the telltale signs of a mature industry where there's no innovation.

What is the point the speaker is trying to make about technology development？

A．A mature technology requires less innovation.

B．Technical evolution is close to maturation in certain fields.

C．New types of energy are expected to mature in the near future.

D．Nanomaterials or photonics and carbon nanotubes are environmentally friendly.