2、ginningn. 13brighta.brightlyad.brightness n. 14buildv.rebuildv.buildingn.15busya.businessn. businessmann.businesswomann.16carev.&n.carefula.carefullyad. carelessa.carelesslyad.17certaina.certainlyad.uncertain a. 18changev.&n.changeablea.unchangeable a. 19chemicala.chemistryn. 20choicen.choo
3、sev. 21cityn.citizenn.citiesn.(pl)22cleara.&v.clearlyad. 23cloudn.cloudya. 24collectv.collectionn. 25crazen.crazya. 26crossv.&n.acrossprep.crossing n. 27cyclen.&v.cyclistn. 28dailya.dayn. 20dangern.dangerousa.endanger v. 30deada.diev.deathn.31decidev.decisionn. 32developv.developmentn.devel
4、oping a. 33differencen.differenta. 34difficulta.difficultyn. 35discoverv.coverv. 36discussv.discussionn. 37dishonesta.honesta.honestyn.38dislikev.likev. 39drivev.drivern. 40easilyad.easya.uneasy a. 41educationn.educationala.educate v. 442electrica.electronica.electricityn.43enginen.engineern.