细胞之间以桥粒相连接的是（）
A.外釉上皮层
B.内釉上皮层
C.星网状层
D.中间层
E.釉结
参考答案：C
Mr. Harris apologized ___the children ____ the lady _____ what they had done.
A．for; to; to
B．to; to; for
C．for; to; for
D．to; for; for
蛔厥吐蛔，手足逆冷，静而复烦，得食则吐，治疗当用（）
A.乌梅丸
B.甘草粉蜜汤
C.大乌头煎
D.四逆汤
