居住用地可以进一步分为( )类。
A．2
B．3
C．4
D．5
参考答案：C
解析：[知识点] 城市
Many festivals are held _______ our ancestors for their contribution to the world.
A．in honor of
B．in the honor of
C．in memory to
D．in the memory of
乳牙列中龋好发牙位（）
A.下颌乳磨牙
B.上颌乳磨牙
C.乳尖牙
D.乳中切牙
E.乳侧切牙
