四级单词列表

racially radically raise range rank rare rate rational react realistic rearrange reassess reception recession recharge recommend recover recruit recycle reduce refine reflect reframe refreshing refuel refusal regular regularly regulate regulation reinforce reject relative release relevant reliable relieve reluctant remedy remove render renew rental repave replace replacement represent representative reproduce reproductive reputation request require rescue resemble reservation reserve resident resign resist resistance resistant resolve resourceful respectful respectively response responsibility responsible restock restore restrict restriction retail retailer retain retirement retrain retreat reveal revenge revenue reverse review revise revolution reward rigorous ring riot riotous rival rocket routinely rude