下列哪项不是引起肾小管性蛋白尿的常见病
A．急性肾盂肾炎B．急性肾炎C．药物中毒D．间质性肾炎E．重金属中毒
参考答案：B
有关上颌窦癌描述，正确的是()
A．多为腺癌
B．多为继发
C．窦腔内可见不规则软组织肿块，增强明显，伴骨质破坏
D．上颌窦外侧壁破坏最多见
E．常向右下角扩展
It's impossible for a child to do so much work within a short period of time, ______
A. isn't it B. is itC. has it D. hasn't it
