单项选择题

（）是上消化道出血的最常见病因。

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不定项选择

使用与、非的逻辑运算可以组合出“或”的逻辑运算。

A．正确
B．错误

单项选择题

Which fallacy it is in the following generalization?（答案处请填入对应字母）
A. hypothesis contrary to fact
B. False analogy
C. Red Herring
D. Dicto simpliciter
E. Slippery slope
F. Bandwagon
G. Hasty generalization
H. ad misericordiam
I. Post hoc

A baby products commercial that shows dad having a "night in" with his sons. _________________.