灰婴综合征的症状有（）
A.厌食
B.呕吐
C.腹胀
D.出血
E.循环衰竭
参考答案：A, B, C, E
A certain lab experiments with white and brown mice only. In one experiment, 2/3 of the mice are white. If there are 13 brown mice in the experiment, how many mice in total are in the experiment ？（）
A. 39
B. 33
C. 26
D. 21
E. 10
源于资产负债期限结构匹配不合理而导致的金融风险是( )。
A．流动性风险
B．国家风险
C．操作风险
D．市场风险
