下列国际经济组织中，不属于联合国系统的是（）。
A.国际货币基金组织
B.世界银行
C.世界贸易组织
D.联合国贸发会议
参考答案：C
The _______ look on his face suggested he ______ that. [ ]
A. astonished; hadn't expected
B. astonishing; hadn't expected
C. astonishing, hasn't expected
D. astonished; wouldn't have expected
不良家庭环境及教育方式成为影响青少年自杀的因素。
