题目内容
【单选题】In this introduction we have diagnosed some of the causes of the illness and, in the following chapters, we will draw attention to its various unpleasant ________.
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【单选题】In those days, divorce under any circumstances was socially unacceptable and there was great ________ in the family who went through it.
【单选题】Every time she talked about being rejected in her hunt for a job, she seemed on the ________ of tears, and I would quickly switch the conversation to another topic.
油脂酸败常用的卫生学指标有()。
我国食品添加剂的主要卫生问题有（ ）。
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