不寐的病机特点为
A.胃气不和,夜卧不安
B.阳盛阴衰,阴阳失交
C.阳不交阴,心肾不交
D.阴盛阳衰,阴阳失交
E.以上均不对
参考答案:B
—"I'm sorry I forgot _____ the letter for you!"
—"It doesn't matter, I'll post it myself." [ ]
A. to post
B. posting
C. post
D. posted
ETF的申购、赎回是基金份额与现金的对价;而LOF与投资者交换的是基金份额与一揽子股票。( )