注意：此页面搜索的是所有试题
题目内容
（国家开放大学报关实务）
Because of the ____ nature of our business, at times we may need emergency purchases.
A.unprincipled
B.unmistakable
C.unbelievable
D.unpredictable
A.unprincipled
B.unmistakable
C.unbelievable
D.unpredictable
参考答案