当有些风险无法回避、必须直接面对,而以自身的承受能力又无法有效承担时,( )就是一种十分有效的选择。
A.风险回避 B.风险自留C.风险控制 D.风险转移
参考答案:D
民族国家的建构不存在任何危机。
Both of his parents died of illness so he ______ support his family at the age of 14.[ ]
A. must
B. should
C. could
D. had to