放射性肺炎病灶内有时可见空气支气管征，且可见含气支气管分支并拢或支气管扩张征象。
参考答案：对
谈谈产蛋鸡群有哪些日常管理工作。
— Where is Mr Green?
— He ____ Jane with her English in the teachers' office. [ ]
A. has helped
B. is helping
C. helps
D. will help
