4.Using communal chopsticks is unnecessary when sharing food.
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5.Chinese people think that it is polite to place food on other people’s plate.
A. 对
B. 错
肾盂肾炎是累及_______和__________的_________炎症。患者以____性居多
肾盂肾炎的感染途径主要有___________________和________________两条
根据病程和病理特点，将肾盂肾炎分为______________和____________两类
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