A预防B病的办法只有一条,就是不C吃这类能引起D过敏的食物。
A. 该
B. 该
C. 该
D. 该
What do we learn from the story？
A. The trip didn't do any good to his health.
B. The trip was a complete disappointment.
C. The trip was enjoyable but not fruitful in terms of business.
D. The trip has helped him meet many interesting people.
证券公司部门和岗位的设置应当权责分明、相互牵制,这属于证券公司内部控制的()原则。
A. 健全性
B. 合理性
C. 制衡性
D. 独立性
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