A:
B:
C:
D:
小丽踢了24个毽子,比小佳少踢4个,两人共踢( )个。
I think both Mao Zedong and Zhou Enlai are ____ (hero).
某患儿胸腺先天性缺失,与正常儿童相比,该患儿( )
求证:DE是⊙O的切线.