代表汉代五言诗最高成就的是（）。
A.东汉乐府民歌
B.“古诗十九首”
C.托名苏武、李陵的几首“苏李诗”
D.东汉乐府诗歌
参考答案：B
You may keep this book for a month, _____ you don' t have it lost.[ ]
A. as well as
B. as well
C. as long as
D. as far as
肺内炎性实变，下列哪种CT表现提示有可能是肺癌引起的()
A．炎性实变呈圆形或结节状
B．有支气管气相
C．静脉注射有增强
D．静脉注射不增强
E．支气管狭窄或闭塞
