长期咳嗽，咳大量脓痰，反复出现大咯血
A.肺结核
B.肺癌
C.支气管扩张
D.急性左心衰竭
E.支原体肺炎
参考答案：C
I haven't read ____ of his books, but judging from the one I have read I think he's a very promising writer. [ ]
A. any
B. none
C. both
D. either
《中华人民共和国国家标准(GB/T4754—2002)》将社会经济活动划分为______。
A．门类、大类、中类和小类四级 B．大类、中类和小类三级C．门类、大类和中类三级 D．门类和大类二级
