信使核糖核酸（mRNA, messenger ribonucleic acid）
参考答案：
一类用作蛋白质合成模板的RNA。
气滞证出现的疼痛，其特征为（）
A.胀痛
B.刺痛
C.隐痛
D.掣痛
E.空痛
Mary A Contrary has a SHORT position in 15 November heating oil contracts. She buys 15 December heating oil contracts. Ms. Contrary has:()
A. closed her futures position by offset.
B. initiated a new LONG futures position in addition to her existing SHORT position.
C. initiated an exchange-for-physicals (EFP).
