确定自然保护区的范围和界线.应当兼顾()
A.保护对象的完整性和适度性
B.当地经济建设发展状况
C.历史文化背景
D.居民生产.生活的需要
参考答案:A, B, D
— What do you think of Peter?
— He ______ be really difficult to get along with even though he's a nice person in general.[ ]
A. shall
B. should
C. must
D. can
经常性战备是指公安消防部队完成日常性执勤战斗任务的准备状态。()