无性系品种种子生产特点。
参考答案：
体积较大，不易保存；繁殖材料分生能力强；具有较好的抗逆性适应性。
— I tried it out in this way, but I failed.
— Why not it in some other ways?
A．to work; try doing
B．to work; try to do
C．working; try to do
D．to work; to try doing
真热假寒的病机特点是( )
A．阴盛格阳
B．阴虚阳盛
C．阴损及阳
D．阳盛格阴
E．阳虚阴盛
