1.advocate=supporter

　　2.significance=impressive=meaning=sense=supremacy=connotation

　　3.trial=experiment =test

　　4.limit=minimize=maximum=themost=ceiling=cut-off point

　　5.pickout=identify=recognize=know=tell

　　6.invention= creation=innovation

　　7.farming=agriculture

　　8.simultaneous=at the same time=together=at once=at one time

　　9.uniform=equal=homogeneous

　　10.devise=formulate=invent=create=come up with=make up=conceive=coin=dream up

　　11.new=revolutionary=innovation=fresh=novel=be in its infancy

　　12.prompt=motivate=make sb.do something=cause/lead/induce sb.to do sth.

　　13.categorize=grade=be grouped=class / type=sort=classifyt

　　14.indicate=detect

　　15.discover=probe

　　16.select=identify

　　17.speed=rate

　　18.discover=explore

　　19.atmosphere=air

　　20.be aware of=realize=be consciousof