选择题：Generally, you should avoid（）business over a meal

题目内容：

Generally, you should avoid（）business over a meal until your host gives a signal. 　　
(A)talk about
(B)talking about
(C)to talk about
(D)talked about

参考答案：

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根据《疫苗流通和预防接种管理条例》，疾病预防控制机构、疫苗生产企业应对运输过程中的疫苗进行温度监测并记录。其记录内容除疫苗名称、生产企业、供货（发送）单位、数量

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