DIC时，血液凝固性表现为（）。
A.凝固性增高
B.凝固性降低
C.凝固性先降低后增高
D.凝固性先增高后降低
E.凝固性无明显变化
参考答案：D
—What can I do for you, sir?
—I want a _________ of cola. [ ]
A. tin
B. box
C. bag
D. piece
购买力平价和利率平价理论(theory of purchasing power parity & theory of interest-rate parity)
