(-1)2=( )
A.1
B.-1
C.2
D.-2
(-1)2=1.
故选A.
根据《城市紫线管理办法》的规定,划定紫线应当遵循的原则有()。
A.控制范围清晰,附有明确的地理坐标及相应的界址地形图
B.历史建筑的保护范围应当包括历史建筑本身和必要的风貌协调区
C.统筹考虑城市水系的整体性、协调性、安全性和功能性
D.城市紫线范围内文物保护单位保护范围的划定,依据国家有关文物保护的法律、法规
E.历史文化街区的保护范围应当包括历史建筑物、构筑物和其风貌环境所组成的核心地段
As mentioned in the passage, Rod Paige was certainly ______.
A.a secretary in charge of education in the NCLB program
B.a secretary in charge of TV Education for American children
C.one of the many men interviewed on radio in 2004
D.the man in charge of the Education Ministry of the United States