1680. What character can be added to both of these characters to give other characters? 米_ -> _早

Answer:

米  BEI, MAI, kome - rice

早  SOU, SA, haya(i) , haya(meru) - early, fast, hasten

Add 立:米+立 立+早 

立  RITSU, RYUU, ta(tsu), ta(teru) - stand

粒  RYUU, tsubu - a grain

章  SHOU - chapter, badge, mark