肝癌及恶性畸胎瘤血清中均可增高的是()
A.VCA-IgA
B.AFP
C.ACP
D.CEA
E.AKP
参考答案:B
As we have known from the map of the world, this is ______.
A.twice as large an island as that
B.twice as larger as that island
C.as twice as that one
D.twice as a large island as that
当利率水平为3%时,某零息债价格为98。利率水平上升,债券价格会低于98。