在叶芽结构中，能发育成侧芽的结构是[ ]
A．生长点
B．芽原基
C．叶原基
D．芽轴
答案：B
Failure to face up to painful experience can be ________ form of stress itself, and can increase ________ possibility of illness.
A．the; /
B．a; a
C．a; the
D．/; the
