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问题 多项选择题

下列哪几项是突发公共卫生事件预警的原则？（）

A、客观性原则

B、艺术性原则

C、系统性原则

D、连续性原则

E、定性研究与定量分析相结合的原则

答案

参考答案：A, C, D, E

听力题

根据对话意思和所给首字母，写出完整正确的单词。

Dear Li Lei,

Thank you for your last letter. I’d like to tell you about a good (1) f  __  of mine. His name is John. Next week, he will (2) v  ___  China, but he knows nothing about the country. Can you (3) m  ___  him at the airport?

Look, here is a picture of him. He is tall with short, black hair. He has two (4) b  _ ___  eyes. On the day he arrives, he will wear a light blue shirt and white trousers. He doesn’t wear

(5) g  ____ .

Could you help me? Thank you very much.
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问答题

因果颠倒偏倚
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