问题
单项选择题
慢性肾小球肾炎的主要发病机理是
A．链球菌感染
B．病毒感染
C．感染后免疫损害
D．霉菌感染
E．健存肾单位代偿性高负荷
答案
参考答案：C
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慢性肾小球肾炎的主要发病机理是
A．链球菌感染
B．病毒感染
C．感染后免疫损害
D．霉菌感染
E．健存肾单位代偿性高负荷
参考答案：C
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| China has decided to take action to stop the use of free plastic bags. Supermarkets, shops and outlets (经销点) in China will not be allowed to offer plastic bags. Every year, people use too many plastic bags and fail to deal with them in a right way, wasting the oil and littering the country. While we offer quick and useful service to customers, the plastic bags cause serious pollution and waste of energy as well. The government encourages people to go back to carrying cloth bags and using baskets for their vegetables.
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