摘要:1.掌握本单元39个词语用法 engineering, solar, significant, mankind, constitution, likely,zone, private, grasp, master, perfect, arrange, set foot (in), rely on,failure, locate, valley, brand, luggage, achieve, organ, boom, put forward, break through, agency, announce, evolution, super computer,eureka, economic, hi-tech, technological, overseas, silicon, rejuvenate,impressive, genome, element, byte, humanoid