单项选择题 【单选题】面向特定细分市场、顾客群的市场营销计划，称之为（ ）。

单项选择题 【多选题】食源性食物的致病物质主要有（）

单项选择题 【单选题】To give an argument is to state a claim or assertion and provide a list of reasons or evidence for accepting it, or to convince others that your viewpoint about an issue is________.