茎尖分生区属于（）。
A.顶端分生组织
B.侧生分生组织
C.居间分生组织
D.次生分生组织
参考答案：A
--- Is your new team-mate a good guy?
--- Yes. He is kind, skillful, hard-working and intelligent; ____, I can’t speak too highly of him.
A．on the contrary
B．by the way
C．in a word
D．as a result
聚四氟乙烯封带的优点是什么？
