3-苯基色原酮为基本母核（）
A.黄酮
B.黄酮醇
C.二氢黄酮（醇）
D.异黄酮
E.查耳酮
参考答案：D
Travelling, talking with friends and relatives, and other forms of relaxation are very likely to _______ the well-being of metal health.
A．contribute to
B．blow up
C．put up
D．carry on
领先用户方法有哪些适用条件？
