下列哪种组织常存在于正在生长的器官中（）。
A．厚角组织
B．纤维
C．石细胞
D．厚壁组织
参考答案：A
When Daniel is in a bad mood, he likes to wear orange to _________.
A．wake himself up
B．cheer himself up
C．give himself up
D．cheer up himself
怎样检查气雾剂的质量？
