老年男性，有长期吸烟史，出现刺激性咳嗽，痰中带血，最可能为
A．支气管扩张
B．肺结核
C．肺炎
D．支气管肺癌
E．肺水肿
参考答案：D
With ________ look of disappointment, he left the Student Union office. Without ________ knowledge of photographing, he missed the chance to be an editor of Babel.
A．the, the
B．a, a
C．the, a
D．/, the
简述“读/写文件”操作的系统处理过程
