以下哪一项不是艾滋病的传播途径（）
A、空气传播
B、性接触传播
C、血液传播
D、母婴传播
参考答案：A
– Where are you working now?
– In Chongqing. But I _____ in Shanghai for 5 years.
A．worked
B．had worked
C．have worked
D．had been working
下列哪项是慢性肾炎必有的表现
A．水肿
B．血尿
C．蛋白尿
D．高血压
E．肾功能减退
