如图所示的奥斯特实验说明了
A.电流的周围存在着磁场
B.电流在磁场中会受到力的作用
C.导线做切割磁感线运动时会产生电流
D.小磁针在没有磁场时也会转动
答案:A
巴西利亚值得我国许多城市学习之处不包括[ ]
A.控制城市规模
B.合理规划
C.加强城市管理
D.放弃旧城,建设新城
________tomorrow,I will leave for America to attend a conference.[ ]
A.However the weather is like
B.However is the weather like
C.Whatever is the weather like
D.Whatever the weather is like