构成人体细胞的基本物质是( )
A.水
B.糖类
C.无机盐
D.蛋白质
答案:D
蛋白质是构成人体组织细胞的基本物质,也是人体生长发育、组织更新、生命活动的物质基础。
Mr.Jones, _______ a great loss last year, has no courage to go on with his business. [ ]
A. suffering
B. to suffer
C. suffered
D. having suffered
某面值为1000元、每年付息1次、息票率为10%、5年期的债券按面值出售,该债券的到期收益率为:
A.9.0%
B.10.0%
C.11.0%
D.12.0%