简介:1.掌握本单元39个词语用法engineering,solar,significant,mankind,constitution,likely,zone,private,grasp,master,perfect,arrange,setfoot(in),relyon,failure,locate,valley,brand,luggage,achieve,organ,boom,putforward,breakthrough,agency,announce,evolution,supercomputer,eureka,economic,hi-tech,technological,overseas,silicon,rejuvenate,impressive,genome,element,byte,humanoid