坏死性外耳道炎患者多数是_________和_________患者。
参考答案：老年人‖糖尿病
伤寒病属于
A．变质性炎症B．浆液性炎症C．增生性炎症D．化脓性炎症E．出血性炎症
The lady in this photo __ be over fifty! She looks so young!
A．mustn't
B．can't
C．must
D．can
