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问题 多项选择题

有些词因为单独使用时无实际意义，或者出现频率过高，因此CSA规定这些词为禁用词（Stopword），如（）

A、in，at

B、of，about

C、up，out

D、is，are

答案

参考答案：A, B, C, D

单项选择题

关于吸烟对牙周组织的影响，下列哪种说法是正确的（）

A.吸烟增强了中性粒细胞的趋化和吞噬功能

B.吸烟增加了血清IgG、IgM和SIgA

C.吸烟降低局部氧张力，有利于某些致病菌的生长

D.吸烟抑制破骨细胞的活性

E.吸烟与牙槽骨的吸收程度无关
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单项选择题

An analyst provides services for a charitable organization and in return gets free membership in the organization. Part of her job is to manage the liquid assets of the organization, and those assets include stocks. Her supervisor in the organization calls her and tells her to buy a certain stock for the portfolio based upon insider information from a board member in the organization. The analyst objects, but the supervisor says this is what they have always done and sees no reason for changing now. The analyst complies with the request. With respect to Standards Ⅳ (A), Loyalty to Employer, and Ⅱ (A), Material Nonpublic Information, the analyst violated:()

A. both Standards Ⅳ (A) and Ⅱ (A).

B. only Standard Ⅳ (A) requiring duty of loyalty.

C. only Standard Ⅱ (A) that prohibits insider trading.
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