99%存在于骨骼和牙齿中，其余的1%存在于血液和细胞外液中的无机盐是（）
A.钙
B.铁
C.碘
D.锌
参考答案：A
According to the CFA Institute Standards of Professional Conduct, beneficial security ownership that might impair one’s professional judgment must be disclosed to all of the following EXCEPT:（）
A. clients.
B. prospects.
C. fellow members employed at the same firm.
手少阴心经的第一个腧穴是：
A．天泉
B．水泉
C．极泉
D．廉泉
E．曲泉
